Sono disponibili altri esempi AWS SDK nel repository [AWS Doc SDK](https://github.com/awsdocs/aws-doc-sdk-examples) Examples. GitHub 

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# Esempi di codice per l'utilizzo di Auto Scaling AWS SDKs
<a name="auto-scaling_code_examples"></a>

I seguenti esempi di codice mostrano come usare Amazon EC2 Auto Scaling AWS con un kit di sviluppo software (SDK).

*Nozioni di base*: esempi di codice che mostrano come eseguire le operazioni essenziali all’interno di un servizio.

Le *azioni* sono estratti di codice da programmi più grandi e devono essere eseguite nel contesto. Sebbene le azioni mostrino come richiamare le singole funzioni del servizio, è possibile visualizzarle contestualizzate negli scenari correlati.

*Scenari*: esempi di codice che mostrano come eseguire un’attività specifica chiamando più funzioni all’interno dello stesso servizio o combinate con altri Servizi AWS.

**Altre risorse**
+  **[Guida per l’utente di Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/what-is-amazon-ec2-auto-scaling.html)**: ulteriori informazioni su Auto Scaling.
+ **[Documentazione di riferimento dell’API Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/APIReference/Welcome.html)**: dettagli su tutte le azioni Auto Scaling disponibili.
+ **[AWS Developer Center](https://aws.amazon.com/developer/code-examples/?awsf.sdk-code-examples-product=product%23ec2-auto-scaling)**: esempi di codice che puoi filtrare per categoria o per ricerca completa.
+ **[AWS Esempi SDK](https://github.com/awsdocs/aws-doc-sdk-examples)**: GitHub repository con codice completo nelle lingue preferite. Include le istruzioni su come configurare ed eseguire il codice.

**Contents**
+ [Nozioni di base](auto-scaling_code_examples_basics.md)
  + [Hello Auto Scaling](auto-scaling_example_auto-scaling_Hello_section.md)
  + [Informazioni di base](auto-scaling_example_auto-scaling_Scenario_GroupsAndInstances_section.md)
  + [Azioni](auto-scaling_code_examples_actions.md)
    + [`AttachInstances`](auto-scaling_example_auto-scaling_AttachInstances_section.md)
    + [`AttachLoadBalancerTargetGroups`](auto-scaling_example_auto-scaling_AttachLoadBalancerTargetGroups_section.md)
    + [`AttachLoadBalancers`](auto-scaling_example_auto-scaling_AttachLoadBalancers_section.md)
    + [`CompleteLifecycleAction`](auto-scaling_example_auto-scaling_CompleteLifecycleAction_section.md)
    + [`CreateAutoScalingGroup`](auto-scaling_example_auto-scaling_CreateAutoScalingGroup_section.md)
    + [`CreateLaunchConfiguration`](auto-scaling_example_auto-scaling_CreateLaunchConfiguration_section.md)
    + [`CreateOrUpdateTags`](auto-scaling_example_auto-scaling_CreateOrUpdateTags_section.md)
    + [`DeleteAutoScalingGroup`](auto-scaling_example_auto-scaling_DeleteAutoScalingGroup_section.md)
    + [`DeleteLaunchConfiguration`](auto-scaling_example_auto-scaling_DeleteLaunchConfiguration_section.md)
    + [`DeleteLifecycleHook`](auto-scaling_example_auto-scaling_DeleteLifecycleHook_section.md)
    + [`DeleteNotificationConfiguration`](auto-scaling_example_auto-scaling_DeleteNotificationConfiguration_section.md)
    + [`DeletePolicy`](auto-scaling_example_auto-scaling_DeletePolicy_section.md)
    + [`DeleteScheduledAction`](auto-scaling_example_auto-scaling_DeleteScheduledAction_section.md)
    + [`DeleteTags`](auto-scaling_example_auto-scaling_DeleteTags_section.md)
    + [`DescribeAccountLimits`](auto-scaling_example_auto-scaling_DescribeAccountLimits_section.md)
    + [`DescribeAdjustmentTypes`](auto-scaling_example_auto-scaling_DescribeAdjustmentTypes_section.md)
    + [`DescribeAutoScalingGroups`](auto-scaling_example_auto-scaling_DescribeAutoScalingGroups_section.md)
    + [`DescribeAutoScalingInstances`](auto-scaling_example_auto-scaling_DescribeAutoScalingInstances_section.md)
    + [`DescribeAutoScalingNotificationTypes`](auto-scaling_example_auto-scaling_DescribeAutoScalingNotificationTypes_section.md)
    + [`DescribeLaunchConfigurations`](auto-scaling_example_auto-scaling_DescribeLaunchConfigurations_section.md)
    + [`DescribeLifecycleHookTypes`](auto-scaling_example_auto-scaling_DescribeLifecycleHookTypes_section.md)
    + [`DescribeLifecycleHooks`](auto-scaling_example_auto-scaling_DescribeLifecycleHooks_section.md)
    + [`DescribeLoadBalancers`](auto-scaling_example_auto-scaling_DescribeLoadBalancers_section.md)
    + [`DescribeMetricCollectionTypes`](auto-scaling_example_auto-scaling_DescribeMetricCollectionTypes_section.md)
    + [`DescribeNotificationConfigurations`](auto-scaling_example_auto-scaling_DescribeNotificationConfigurations_section.md)
    + [`DescribePolicies`](auto-scaling_example_auto-scaling_DescribePolicies_section.md)
    + [`DescribeScalingActivities`](auto-scaling_example_auto-scaling_DescribeScalingActivities_section.md)
    + [`DescribeScalingProcessTypes`](auto-scaling_example_auto-scaling_DescribeScalingProcessTypes_section.md)
    + [`DescribeScheduledActions`](auto-scaling_example_auto-scaling_DescribeScheduledActions_section.md)
    + [`DescribeTags`](auto-scaling_example_auto-scaling_DescribeTags_section.md)
    + [`DescribeTerminationPolicyTypes`](auto-scaling_example_auto-scaling_DescribeTerminationPolicyTypes_section.md)
    + [`DetachInstances`](auto-scaling_example_auto-scaling_DetachInstances_section.md)
    + [`DetachLoadBalancers`](auto-scaling_example_auto-scaling_DetachLoadBalancers_section.md)
    + [`DisableMetricsCollection`](auto-scaling_example_auto-scaling_DisableMetricsCollection_section.md)
    + [`EnableMetricsCollection`](auto-scaling_example_auto-scaling_EnableMetricsCollection_section.md)
    + [`EnterStandby`](auto-scaling_example_auto-scaling_EnterStandby_section.md)
    + [`ExecutePolicy`](auto-scaling_example_auto-scaling_ExecutePolicy_section.md)
    + [`ExitStandby`](auto-scaling_example_auto-scaling_ExitStandby_section.md)
    + [`PutLifecycleHook`](auto-scaling_example_auto-scaling_PutLifecycleHook_section.md)
    + [`PutNotificationConfiguration`](auto-scaling_example_auto-scaling_PutNotificationConfiguration_section.md)
    + [`PutScalingPolicy`](auto-scaling_example_auto-scaling_PutScalingPolicy_section.md)
    + [`PutScheduledUpdateGroupAction`](auto-scaling_example_auto-scaling_PutScheduledUpdateGroupAction_section.md)
    + [`RecordLifecycleActionHeartbeat`](auto-scaling_example_auto-scaling_RecordLifecycleActionHeartbeat_section.md)
    + [`ResumeProcesses`](auto-scaling_example_auto-scaling_ResumeProcesses_section.md)
    + [`SetDesiredCapacity`](auto-scaling_example_auto-scaling_SetDesiredCapacity_section.md)
    + [`SetInstanceHealth`](auto-scaling_example_auto-scaling_SetInstanceHealth_section.md)
    + [`SetInstanceProtection`](auto-scaling_example_auto-scaling_SetInstanceProtection_section.md)
    + [`SuspendProcesses`](auto-scaling_example_auto-scaling_SuspendProcesses_section.md)
    + [`TerminateInstanceInAutoScalingGroup`](auto-scaling_example_auto-scaling_TerminateInstanceInAutoScalingGroup_section.md)
    + [`UpdateAutoScalingGroup`](auto-scaling_example_auto-scaling_UpdateAutoScalingGroup_section.md)
+ [Scenari](auto-scaling_code_examples_scenarios.md)
  + [Creazione e gestione di un servizio resiliente](auto-scaling_example_cross_ResilientService_section.md)

# Esempi di base per l'utilizzo di Auto Scaling AWS SDKs
<a name="auto-scaling_code_examples_basics"></a>

I seguenti esempi di codice mostrano come utilizzare le nozioni di base di Amazon EC2 Auto Scaling con. AWS SDKs 

**Contents**
+ [Hello Auto Scaling](auto-scaling_example_auto-scaling_Hello_section.md)
+ [Informazioni di base](auto-scaling_example_auto-scaling_Scenario_GroupsAndInstances_section.md)
+ [Azioni](auto-scaling_code_examples_actions.md)
  + [`AttachInstances`](auto-scaling_example_auto-scaling_AttachInstances_section.md)
  + [`AttachLoadBalancerTargetGroups`](auto-scaling_example_auto-scaling_AttachLoadBalancerTargetGroups_section.md)
  + [`AttachLoadBalancers`](auto-scaling_example_auto-scaling_AttachLoadBalancers_section.md)
  + [`CompleteLifecycleAction`](auto-scaling_example_auto-scaling_CompleteLifecycleAction_section.md)
  + [`CreateAutoScalingGroup`](auto-scaling_example_auto-scaling_CreateAutoScalingGroup_section.md)
  + [`CreateLaunchConfiguration`](auto-scaling_example_auto-scaling_CreateLaunchConfiguration_section.md)
  + [`CreateOrUpdateTags`](auto-scaling_example_auto-scaling_CreateOrUpdateTags_section.md)
  + [`DeleteAutoScalingGroup`](auto-scaling_example_auto-scaling_DeleteAutoScalingGroup_section.md)
  + [`DeleteLaunchConfiguration`](auto-scaling_example_auto-scaling_DeleteLaunchConfiguration_section.md)
  + [`DeleteLifecycleHook`](auto-scaling_example_auto-scaling_DeleteLifecycleHook_section.md)
  + [`DeleteNotificationConfiguration`](auto-scaling_example_auto-scaling_DeleteNotificationConfiguration_section.md)
  + [`DeletePolicy`](auto-scaling_example_auto-scaling_DeletePolicy_section.md)
  + [`DeleteScheduledAction`](auto-scaling_example_auto-scaling_DeleteScheduledAction_section.md)
  + [`DeleteTags`](auto-scaling_example_auto-scaling_DeleteTags_section.md)
  + [`DescribeAccountLimits`](auto-scaling_example_auto-scaling_DescribeAccountLimits_section.md)
  + [`DescribeAdjustmentTypes`](auto-scaling_example_auto-scaling_DescribeAdjustmentTypes_section.md)
  + [`DescribeAutoScalingGroups`](auto-scaling_example_auto-scaling_DescribeAutoScalingGroups_section.md)
  + [`DescribeAutoScalingInstances`](auto-scaling_example_auto-scaling_DescribeAutoScalingInstances_section.md)
  + [`DescribeAutoScalingNotificationTypes`](auto-scaling_example_auto-scaling_DescribeAutoScalingNotificationTypes_section.md)
  + [`DescribeLaunchConfigurations`](auto-scaling_example_auto-scaling_DescribeLaunchConfigurations_section.md)
  + [`DescribeLifecycleHookTypes`](auto-scaling_example_auto-scaling_DescribeLifecycleHookTypes_section.md)
  + [`DescribeLifecycleHooks`](auto-scaling_example_auto-scaling_DescribeLifecycleHooks_section.md)
  + [`DescribeLoadBalancers`](auto-scaling_example_auto-scaling_DescribeLoadBalancers_section.md)
  + [`DescribeMetricCollectionTypes`](auto-scaling_example_auto-scaling_DescribeMetricCollectionTypes_section.md)
  + [`DescribeNotificationConfigurations`](auto-scaling_example_auto-scaling_DescribeNotificationConfigurations_section.md)
  + [`DescribePolicies`](auto-scaling_example_auto-scaling_DescribePolicies_section.md)
  + [`DescribeScalingActivities`](auto-scaling_example_auto-scaling_DescribeScalingActivities_section.md)
  + [`DescribeScalingProcessTypes`](auto-scaling_example_auto-scaling_DescribeScalingProcessTypes_section.md)
  + [`DescribeScheduledActions`](auto-scaling_example_auto-scaling_DescribeScheduledActions_section.md)
  + [`DescribeTags`](auto-scaling_example_auto-scaling_DescribeTags_section.md)
  + [`DescribeTerminationPolicyTypes`](auto-scaling_example_auto-scaling_DescribeTerminationPolicyTypes_section.md)
  + [`DetachInstances`](auto-scaling_example_auto-scaling_DetachInstances_section.md)
  + [`DetachLoadBalancers`](auto-scaling_example_auto-scaling_DetachLoadBalancers_section.md)
  + [`DisableMetricsCollection`](auto-scaling_example_auto-scaling_DisableMetricsCollection_section.md)
  + [`EnableMetricsCollection`](auto-scaling_example_auto-scaling_EnableMetricsCollection_section.md)
  + [`EnterStandby`](auto-scaling_example_auto-scaling_EnterStandby_section.md)
  + [`ExecutePolicy`](auto-scaling_example_auto-scaling_ExecutePolicy_section.md)
  + [`ExitStandby`](auto-scaling_example_auto-scaling_ExitStandby_section.md)
  + [`PutLifecycleHook`](auto-scaling_example_auto-scaling_PutLifecycleHook_section.md)
  + [`PutNotificationConfiguration`](auto-scaling_example_auto-scaling_PutNotificationConfiguration_section.md)
  + [`PutScalingPolicy`](auto-scaling_example_auto-scaling_PutScalingPolicy_section.md)
  + [`PutScheduledUpdateGroupAction`](auto-scaling_example_auto-scaling_PutScheduledUpdateGroupAction_section.md)
  + [`RecordLifecycleActionHeartbeat`](auto-scaling_example_auto-scaling_RecordLifecycleActionHeartbeat_section.md)
  + [`ResumeProcesses`](auto-scaling_example_auto-scaling_ResumeProcesses_section.md)
  + [`SetDesiredCapacity`](auto-scaling_example_auto-scaling_SetDesiredCapacity_section.md)
  + [`SetInstanceHealth`](auto-scaling_example_auto-scaling_SetInstanceHealth_section.md)
  + [`SetInstanceProtection`](auto-scaling_example_auto-scaling_SetInstanceProtection_section.md)
  + [`SuspendProcesses`](auto-scaling_example_auto-scaling_SuspendProcesses_section.md)
  + [`TerminateInstanceInAutoScalingGroup`](auto-scaling_example_auto-scaling_TerminateInstanceInAutoScalingGroup_section.md)
  + [`UpdateAutoScalingGroup`](auto-scaling_example_auto-scaling_UpdateAutoScalingGroup_section.md)

# Hello Auto Scaling
<a name="auto-scaling_example_auto-scaling_Hello_section"></a>

L’esempio di codice seguente mostra come iniziare a utilizzare Auto Scaling.

------
#### [ .NET ]

**SDK per .NET (v4)**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv4/AutoScaling#code-examples). 

```
namespace AutoScalingActions;

using Amazon.AutoScaling;

public class HelloAutoScaling
{
    /// <summary>
    /// Hello Amazon EC2 Auto Scaling. List EC2 Auto Scaling groups.
    /// </summary>
    /// <param name="args"></param>
    /// <returns>Async Task.</returns>
    static async Task Main(string[] args)
    {
        var client = new AmazonAutoScalingClient();

        Console.WriteLine("Welcome to Amazon EC2 Auto Scaling.");
        Console.WriteLine("Let's get a description of your Auto Scaling groups.");

        var response = await client.DescribeAutoScalingGroupsAsync();

        if (response.AutoScalingGroups == null || response.AutoScalingGroups.Count == 0)
        {
            Console.WriteLine("Sorry, you don't have any Amazon EC2 Auto Scaling groups.");
            return;
        }
        response.AutoScalingGroups.ForEach(autoScalingGroup =>
        {
            Console.WriteLine($"{autoScalingGroup.AutoScalingGroupName}\t{autoScalingGroup.AvailabilityZones}");
        });

    }
}
```
+  Per i dettagli sull'API, consulta la [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/DescribeAutoScalingGroups)sezione *AWS SDK per .NET API Reference*. 

------
#### [ C\$1\$1 ]

**SDK per C\$1\$1**  
 C'è di più su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/autoscaling/hello_autoscaling#code-examples). 
Codice per il CMake file CMake Lists.txt.  

```
# Set the minimum required version of CMake for this project.
cmake_minimum_required(VERSION 3.13)

# Set the AWS service components used by this project.
set(SERVICE_COMPONENTS autoscaling)

# Set this project's name.
project("hello_autoscaling")

# Set the C++ standard to use to build this target.
# At least C++ 11 is required for the AWS SDK for C++.
set(CMAKE_CXX_STANDARD 11)

# Use the MSVC variable to determine if this is a Windows build.
set(WINDOWS_BUILD ${MSVC})

if (WINDOWS_BUILD) # Set the location where CMake can find the installed libraries for the AWS SDK.
    string(REPLACE ";" "/aws-cpp-sdk-all;" SYSTEM_MODULE_PATH "${CMAKE_SYSTEM_PREFIX_PATH}/aws-cpp-sdk-all")
    list(APPEND CMAKE_PREFIX_PATH ${SYSTEM_MODULE_PATH})
endif ()

# Find the AWS SDK for C++ package.
find_package(AWSSDK REQUIRED COMPONENTS ${SERVICE_COMPONENTS})

if (WINDOWS_BUILD AND AWSSDK_INSTALL_AS_SHARED_LIBS)
     # Copy relevant AWS SDK for C++ libraries into the current binary directory for running and debugging.

     # set(BIN_SUB_DIR "/Debug") # If you are building from the command line, you may need to uncomment this 
                                    # and set the proper subdirectory to the executables' location.

     AWSSDK_CPY_DYN_LIBS(SERVICE_COMPONENTS "" ${CMAKE_CURRENT_BINARY_DIR}${BIN_SUB_DIR})
endif ()

add_executable(${PROJECT_NAME}
        hello_autoscaling.cpp)

target_link_libraries(${PROJECT_NAME}
        ${AWSSDK_LINK_LIBRARIES})
```
Codice per il file di origine hello\$1autoscaling.cpp.  

```
#include <aws/core/Aws.h>
#include <aws/autoscaling/AutoScalingClient.h>
#include <aws/autoscaling/model/DescribeAutoScalingGroupsRequest.h>
#include <iostream>

/*
 *  A "Hello Autoscaling" starter application which initializes an Amazon EC2 Auto Scaling client and describes the
 *  Amazon EC2 Auto Scaling groups.
 *
 *  main function
 *
 *  Usage: 'hello_autoscaling'
 *
 */

int main(int argc, char **argv) {
    Aws::SDKOptions options;
    // Optionally change the log level for debugging.
//   options.loggingOptions.logLevel = Utils::Logging::LogLevel::Debug;
    Aws::InitAPI(options); // Should only be called once.
    int result = 0;
    {
        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

        Aws::AutoScaling::AutoScalingClient autoscalingClient(clientConfig);

        std::vector<Aws::String> groupNames;
        Aws::String nextToken; // Used for pagination.

        do {

            Aws::AutoScaling::Model::DescribeAutoScalingGroupsRequest request;
            if (!nextToken.empty()) {
                request.SetNextToken(nextToken);
            }

            Aws::AutoScaling::Model::DescribeAutoScalingGroupsOutcome outcome =
                    autoscalingClient.DescribeAutoScalingGroups(request);

            if (outcome.IsSuccess()) {
                const Aws::Vector<Aws::AutoScaling::Model::AutoScalingGroup> &autoScalingGroups =
                        outcome.GetResult().GetAutoScalingGroups();
                for (auto &group: autoScalingGroups) {
                    groupNames.push_back(group.GetAutoScalingGroupName());
                }
                nextToken = outcome.GetResult().GetNextToken();
            } else {
                std::cerr << "Error with AutoScaling::DescribeAutoScalingGroups. "
                          << outcome.GetError().GetMessage()
                          << std::endl;
                result = 1;
                break;
            }
        } while (!nextToken.empty());

        std::cout << "Found " << groupNames.size() << " AutoScaling groups." << std::endl;
        for (auto &groupName: groupNames) {
            std::cout << "AutoScaling group: " << groupName << std::endl;
        }

    }


    Aws::ShutdownAPI(options); // Should only be called once.
    return result;
}
```
+  Per i dettagli sull'API, [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/DescribeAutoScalingGroups)consulta *AWS SDK per C\$1\$1 API Reference*. 

------
#### [ Java ]

**SDK per Java 2.x**  
 C'è di più su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/autoscale#code-examples). 

```
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.autoscaling.AutoScalingClient;
import software.amazon.awssdk.services.autoscaling.model.AutoScalingGroup;
import software.amazon.awssdk.services.autoscaling.model.DescribeAutoScalingGroupsResponse;
import java.util.List;

/**
 * Before running this SDK for Java (v2) code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class DescribeAutoScalingGroups {
    public static void main(String[] args) throws InterruptedException {
        AutoScalingClient autoScalingClient = AutoScalingClient.builder()
                .region(Region.US_EAST_1)
                .build();

        describeGroups(autoScalingClient);
    }

    public static void describeGroups(AutoScalingClient autoScalingClient) {
        DescribeAutoScalingGroupsResponse response = autoScalingClient.describeAutoScalingGroups();
        List<AutoScalingGroup> groups = response.autoScalingGroups();
        groups.forEach(group -> {
            System.out.println("Group Name: " + group.autoScalingGroupName());
            System.out.println("Group ARN: " + group.autoScalingGroupARN());
        });
    }
}
```
+  Per i dettagli sull'API, consulta la [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/DescribeAutoScalingGroups)sezione *AWS SDK for Java 2.x API Reference*. 

------
#### [ PHP ]

**SDK per PHP**  
 C'è di più su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code/auto-scaling#code-examples). 

```
    public function helloService()
    {
        $autoScalingClient = new AutoScalingClient([
            'region' => 'us-west-2',
            'version' => 'latest',
            'profile' => 'default',
        ]);

        $groups = $autoScalingClient->describeAutoScalingGroups([]);
        var_dump($groups);
    }
```
+  Per i dettagli sull'API, consulta la [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/DescribeAutoScalingGroups)sezione *AWS SDK per PHP API Reference*. 

------
#### [ Python ]

**SDK per Python (Boto3)**  
 C'è di più su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/auto-scaling#code-examples). 

```
import boto3


def hello_autoscaling(autoscaling_client):
    """
    Use the AWS SDK for Python (Boto3) to create an Amazon EC2 Auto Scaling client and list
    some of the Auto Scaling groups in your account.
    This example uses the default settings specified in your shared credentials
    and config files.

    :param autoscaling_client: A Boto3 Amazon EC2 Auto Scaling client object.
    """
    print(
        "Hello, Amazon EC2 Auto Scaling! Let's list up to ten of you Auto Scaling groups:"
    )
    response = autoscaling_client.describe_auto_scaling_groups()
    groups = response.get("AutoScalingGroups", [])
    if groups:
        for group in groups:
            print(f"\t{group['AutoScalingGroupName']}: {group['AvailabilityZones']}")
    else:
        print("There are no Auto Scaling groups in your account.")


if __name__ == "__main__":
    hello_autoscaling(boto3.client("autoscaling"))
```
+  Per i dettagli sull'API, consulta [DescribeAutoScalingGroups AWS](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/DescribeAutoScalingGroups)*SDK for Python (Boto3) API Reference*. 

------
#### [ Ruby ]

**SDK per Ruby**  
 C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/ruby/example_code/auto-scaling#code-examples). 

```
require 'aws-sdk-autoscaling'
require 'logger'

# AutoScalingManager is a class responsible for managing AWS Auto Scaling operations
# such as listing all Auto Scaling groups in the current AWS account.
class AutoScalingManager
  def initialize(client)
    @client = client
    @logger = Logger.new($stdout)
  end

  # Gets and prints a list of Auto Scaling groups for the account.
  def list_auto_scaling_groups
    paginator = @client.describe_auto_scaling_groups
    auto_scaling_groups = []
    paginator.each_page do |page|
      auto_scaling_groups.concat(page.auto_scaling_groups)
    end

    if auto_scaling_groups.empty?
      @logger.info('No Auto Scaling groups found for this account.')
    else
      auto_scaling_groups.each do |group|
        @logger.info("Auto Scaling group name: #{group.auto_scaling_group_name}")
        @logger.info("  Group ARN:             #{group.auto_scaling_group_arn}")
        @logger.info("  Min/max/desired:       #{group.min_size}/#{group.max_size}/#{group.desired_capacity}")
        @logger.info("\n")
      end
    end
  end
end

if $PROGRAM_NAME == __FILE__
  autoscaling_client = Aws::AutoScaling::Client.new
  manager = AutoScalingManager.new(autoscaling_client)
  manager.list_auto_scaling_groups
end
```
+  Per i dettagli sull'API, consulta la [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/SdkForRubyV3/autoscaling-2011-01-01/DescribeAutoScalingGroups)sezione *AWS SDK per Ruby API Reference*. 

------
#### [ Rust ]

**SDK per Rust**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/rustv1/examples/auto-scaling#code-examples). 

```
async fn list_groups(client: &Client) -> Result<(), Error> {
    let resp = client.describe_auto_scaling_groups().send().await?;

    println!("Groups:");

    let groups = resp.auto_scaling_groups();

    for group in groups {
        println!(
            "Name:  {}",
            group.auto_scaling_group_name().unwrap_or("Unknown")
        );
        println!(
            "Arn:   {}",
            group.auto_scaling_group_arn().unwrap_or("unknown"),
        );
        println!("Zones: {:?}", group.availability_zones(),);
        println!();
    }

    println!("Found {} group(s)", groups.len());

    Ok(())
}
```
+  Per i dettagli sulle API, consulta il *riferimento [DescribeAutoScalingGroups](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.describe_auto_scaling_groups)all'API AWS SDK for Rust*. 

------

# Scopri le basi dell'Auto Scaling con un SDK AWS
<a name="auto-scaling_example_auto-scaling_Scenario_GroupsAndInstances_section"></a>

Gli esempi di codice seguenti mostrano come:
+ Creare un gruppo Amazon EC2 Auto Scaling con un modello di avvio e zone di disponibilità e ottenere informazioni sulle istanze in esecuzione.
+ Abilita la raccolta di CloudWatch metriche Amazon.
+ Aggiornare la capacità desiderata del gruppo e attendere l’avvio di un’istanza.
+ Terminare un’istanza nel gruppo.
+ Elencare le attività di dimensionamento che si verificano in risposta alle richieste degli utenti e alle modifiche della capacità.
+ Ottieni statistiche per le CloudWatch metriche, quindi ripulisci le risorse.

------
#### [ .NET ]

**SDK per .NET (v4)**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv4/AutoScaling#code-examples). 

```
global using Amazon.AutoScaling;
global using Amazon.AutoScaling.Model;
global using Amazon.CloudWatch;
global using AutoScalingActions;
global using Microsoft.Extensions.DependencyInjection;
global using Microsoft.Extensions.Hosting;
global using Microsoft.Extensions.Logging;
global using Microsoft.Extensions.Logging.Console;
global using Microsoft.Extensions.Logging.Debug;



using Amazon.EC2;
using Microsoft.Extensions.Configuration;
using Host = Microsoft.Extensions.Hosting.Host;

namespace AutoScalingBasics;

public class AutoScalingBasics
{

    static async Task Main(string[] args)
    {
        // Set up dependency injection for Amazon EC2 Auto Scaling, Amazon
        // CloudWatch, and Amazon EC2.
        using var host = Host.CreateDefaultBuilder(args)
            .ConfigureLogging(logging =>
                logging.AddFilter("System", LogLevel.Debug)
                    .AddFilter<DebugLoggerProvider>("Microsoft", LogLevel.Information)
                    .AddFilter<ConsoleLoggerProvider>("Microsoft", LogLevel.Trace))
            .ConfigureServices((_, services) =>
            services.AddAWSService<IAmazonAutoScaling>()
                .AddAWSService<IAmazonCloudWatch>()
                .AddAWSService<IAmazonEC2>()
                .AddTransient<AutoScalingWrapper>()
                .AddTransient<CloudWatchWrapper>()
                .AddTransient<EC2Wrapper>()
                .AddTransient<UIWrapper>()
            )
            .Build();


        var autoScalingWrapper = host.Services.GetRequiredService<AutoScalingWrapper>();
        var cloudWatchWrapper = host.Services.GetRequiredService<CloudWatchWrapper>();
        var ec2Wrapper = host.Services.GetRequiredService<EC2Wrapper>();
        var uiWrapper = host.Services.GetRequiredService<UIWrapper>();

        var configuration = new ConfigurationBuilder()
            .SetBasePath(Directory.GetCurrentDirectory())
            .AddJsonFile("settings.json") // Load test settings from .json file.
            .AddJsonFile("settings.local.json",
                true) // Optionally load local settings.
            .Build();

        var imageId = configuration["ImageId"];
        var instanceType = configuration["InstanceType"];
        var launchTemplateName = configuration["LaunchTemplateName"];

        launchTemplateName += Guid.NewGuid().ToString();

        // The name of the Auto Scaling group.
        var groupName = configuration["GroupName"];

        uiWrapper.DisplayTitle("Auto Scaling Basics");
        uiWrapper.DisplayAutoScalingBasicsDescription();

        // Create the launch template and save the template Id to use when deleting the
        // launch template at the end of the application.
        var launchTemplateId = await ec2Wrapper.CreateLaunchTemplateAsync(imageId!, instanceType!, launchTemplateName);

        // Confirm that the template was created by asking for a description of it.
        await ec2Wrapper.DescribeLaunchTemplateAsync(launchTemplateName);

        uiWrapper.PressEnter();

        var availabilityZones = await ec2Wrapper.ListAvailabilityZonesAsync();

        Console.WriteLine($"Creating an Auto Scaling group named {groupName}.");
        await autoScalingWrapper.CreateAutoScalingGroupAsync(
            groupName!,
            launchTemplateName,
            availabilityZones[0].ZoneName);

        // Keep checking the details of the new group until its lifecycle state
        // is "InService".
        Console.WriteLine($"Waiting for the Auto Scaling group to be active.");

        List<AutoScalingInstanceDetails> instanceDetails;

        do
        {
            instanceDetails = await autoScalingWrapper.DescribeAutoScalingInstancesAsync(groupName!);
        }
        while (instanceDetails.Count <= 0);

        Console.WriteLine($"Auto scaling group {groupName} successfully created.");
        Console.WriteLine($"{instanceDetails.Count} instances were created for the group.");

        // Display the details of the Auto Scaling group.
        instanceDetails.ForEach(detail =>
        {
            Console.WriteLine($"Group name: {detail.AutoScalingGroupName}");
        });

        uiWrapper.PressEnter();

        uiWrapper.DisplayTitle("Metrics collection");
        Console.WriteLine($"Enable metrics collection for {groupName}");
        await autoScalingWrapper.EnableMetricsCollectionAsync(groupName!);

        // Show the metrics that are collected for the group.

        // Update the maximum size of the group to three instances.
        Console.WriteLine("--- Update the Auto Scaling group to increase max size to 3 ---");
        int maxSize = 3;
        await autoScalingWrapper.UpdateAutoScalingGroupAsync(groupName!, launchTemplateName, maxSize);

        Console.WriteLine("--- Describe all Auto Scaling groups to show the current state of the group ---");
        var groups = await autoScalingWrapper.DescribeAutoScalingGroupsAsync(groupName!);

        uiWrapper.DisplayGroupDetails(groups!);

        uiWrapper.PressEnter();

        uiWrapper.DisplayTitle("Describe account limits");
        await autoScalingWrapper.DescribeAccountLimitsAsync();

        uiWrapper.WaitABit(60, "Waiting for the resources to be ready.");

        uiWrapper.DisplayTitle("Set desired capacity");
        int desiredCapacity = 2;
        await autoScalingWrapper.SetDesiredCapacityAsync(groupName!, desiredCapacity);

        Console.WriteLine("Get the two instance Id values");

        // Empty the group before getting the details again.
        groups.Clear();
        groups = await autoScalingWrapper.DescribeAutoScalingGroupsAsync(groupName!);
        if (groups.Any())
        {
            foreach (AutoScalingGroup group in groups)
            {
                Console.WriteLine($"The group name is {group.AutoScalingGroupName}");
                Console.WriteLine($"The group ARN is {group.AutoScalingGroupARN}");
                var instances = group.Instances;
                foreach (Amazon.AutoScaling.Model.Instance instance in instances)
                {
                    Console.WriteLine($"The instance id is {instance.InstanceId}");
                    Console.WriteLine($"The lifecycle state is {instance.LifecycleState}");
                }
            }
        }

        uiWrapper.DisplayTitle("Scaling Activities");
        Console.WriteLine("Let's list the scaling activities that have occurred for the group.");
        var activities = await autoScalingWrapper.DescribeScalingActivitiesAsync(groupName!);
        if (activities.Any())
        {
            activities.ForEach(activity =>
            {
                Console.WriteLine($"The activity Id is {activity.ActivityId}");
                Console.WriteLine($"The activity details are {activity.Details}");
            });
        }

        // Display the Amazon CloudWatch metrics that have been collected.
        var metrics = await cloudWatchWrapper.GetCloudWatchMetricsAsync(groupName!);
        if (metrics.Any())
        {
            Console.WriteLine($"Metrics collected for {groupName}:");
            metrics.ForEach(metric =>
            {
                Console.Write($"Metric name: {metric.MetricName}\t");
                Console.WriteLine($"Namespace: {metric.Namespace}");
            });
        }

        var dataPoints = await cloudWatchWrapper.GetMetricStatisticsAsync(groupName!);
        if (dataPoints.Any())
        {
            Console.WriteLine("Details for the metrics collected:");
            dataPoints.ForEach(detail => { Console.WriteLine(detail); });
        }

        // Disable metrics collection.
        Console.WriteLine("Disabling the collection of metrics for {groupName}.");
        var success = await autoScalingWrapper.DisableMetricsCollectionAsync(groupName!);

        if (success)
        {
            Console.WriteLine($"Successfully stopped metrics collection for {groupName}.");
        }
        else
        {
            Console.WriteLine($"Could not stop metrics collection for {groupName}.");
        }

        // Terminate all instances in the group.
        uiWrapper.DisplayTitle("Terminating Auto Scaling instances");
        Console.WriteLine("Now terminating all instances in the Auto Scaling group.");

        if (groups is not null)
        {
            groups.ForEach(group =>
            {
                // Only delete instances in the AutoScaling group we created.
                if (group.AutoScalingGroupName == groupName)
                {
                    group.Instances.ForEach(async instance =>
                    {
                        await autoScalingWrapper.TerminateInstanceInAutoScalingGroupAsync(instance.InstanceId);
                    });
                }
            });
        }

        // After all instances are terminated, delete the group.
        uiWrapper.DisplayTitle("Clean up resources");
        Console.WriteLine("Deleting the Auto Scaling group.");
        await autoScalingWrapper.DeleteAutoScalingGroupAsync(groupName!);

        // Delete the launch template.
        var deletedLaunchTemplateName = await ec2Wrapper.DeleteLaunchTemplateAsync(launchTemplateId);

        if (deletedLaunchTemplateName == launchTemplateName)
        {
            Console.WriteLine("Successfully deleted the launch template.");
        }

        Console.WriteLine("The demo is now concluded.");
    }
}


namespace AutoScalingBasics;

/// <summary>
/// A class to provide user interface methods for the EC2 AutoScaling Basics
/// scenario.
/// </summary>
public class UIWrapper
{
    public readonly string SepBar = new('-', Console.WindowWidth);

    /// <summary>
    /// Describe the steps in the EC2 AutoScaling Basics scenario.
    /// </summary>
    public void DisplayAutoScalingBasicsDescription()
    {
        Console.WriteLine("This code example performs the following operations:");
        Console.WriteLine(" 1. Creates an Amazon EC2 launch template.");
        Console.WriteLine(" 2. Creates an Auto Scaling group.");
        Console.WriteLine(" 3. Shows the details of the new Auto Scaling group");
        Console.WriteLine("    to show that only one instance was created.");
        Console.WriteLine(" 4. Enables metrics collection.");
        Console.WriteLine(" 5. Updates the Auto Scaling group to increase the");
        Console.WriteLine("    capacity to three.");
        Console.WriteLine(" 6. Describes Auto Scaling groups again to show the");
        Console.WriteLine("    current state of the group.");
        Console.WriteLine(" 7. Changes the desired capacity of the Auto Scaling");
        Console.WriteLine("    group to use an additional instance.");
        Console.WriteLine(" 8. Shows that there are now instances in the group.");
        Console.WriteLine(" 9. Lists the scaling activities that have occurred for the group.");
        Console.WriteLine("10. Displays the Amazon CloudWatch metrics that have");
        Console.WriteLine("    been collected.");
        Console.WriteLine("11. Disables metrics collection.");
        Console.WriteLine("12. Terminates all instances in the Auto Scaling group.");
        Console.WriteLine("13. Deletes the Auto Scaling group.");
        Console.WriteLine("14. Deletes the Amazon EC2 launch template.");
        PressEnter();
    }

    /// <summary>
    /// Display information about the Amazon Ec2 AutoScaling groups passed
    /// in the list of AutoScalingGroup objects.
    /// </summary>
    /// <param name="groups">A list of AutoScalingGroup objects.</param>
    public void DisplayGroupDetails(List<AutoScalingGroup> groups)
    {
        if (groups is null)
            return;

        groups.ForEach(group =>
        {
            Console.WriteLine($"Group name:\t{group.AutoScalingGroupName}");
            Console.WriteLine($"Group created:\t{group.CreatedTime}");
            Console.WriteLine($"Maximum number of instances:\t{group.MaxSize}");
            Console.WriteLine($"Desired number of instances:\t{group.DesiredCapacity}");
        });
    }

    /// <summary>
    /// Display a message and wait until the user presses enter.
    /// </summary>
    public void PressEnter()
    {
        Console.Write("\nPress <Enter> to continue. ");
        _ = Console.ReadLine();
        Console.WriteLine();
    }

    /// <summary>
    /// Pad a string with spaces to center it on the console display.
    /// </summary>
    /// <param name="strToCenter">The string to be centered.</param>
    /// <returns>The padded string.</returns>
    public string CenterString(string strToCenter)
    {
        var padAmount = (Console.WindowWidth - strToCenter.Length) / 2;
        var leftPad = new string(' ', padAmount);
        return $"{leftPad}{strToCenter}";
    }

    /// <summary>
    /// Display a line of hyphens, the centered text of the title and another
    /// line of hyphens.
    /// </summary>
    /// <param name="strTitle">The string to be displayed.</param>
    public void DisplayTitle(string strTitle)
    {
        Console.WriteLine(SepBar);
        Console.WriteLine(CenterString(strTitle));
        Console.WriteLine(SepBar);
    }

    /// <summary>
    /// Display a countdown and wait for a number of seconds.
    /// </summary>
    /// <param name="numSeconds">The number of seconds to wait.</param>
    public void WaitABit(int numSeconds, string msg)
    {
        Console.WriteLine(msg);

        // Wait for the requested number of seconds.
        for (int i = numSeconds; i > 0; i--)
        {
            System.Threading.Thread.Sleep(1000);
            Console.Write($"{i}...");
        }

        PressEnter();
    }
}
```
Definisci le funzioni chiamate dallo scenario per gestire i modelli e le metriche di avvio. Queste funzioni includono Auto Scaling, Amazon EC2 e azioni. CloudWatch   

```
namespace AutoScalingActions;

using Amazon.AutoScaling;
using Amazon.AutoScaling.Model;

/// <summary>
/// A class that includes methods to perform Amazon EC2 Auto Scaling
/// actions.
/// </summary>
public class AutoScalingWrapper
{
    private readonly IAmazonAutoScaling _amazonAutoScaling;

    /// <summary>
    /// Constructor for the AutoScalingWrapper class.
    /// </summary>
    /// <param name="amazonAutoScaling">The injected Amazon EC2 Auto Scaling client.</param>
    public AutoScalingWrapper(IAmazonAutoScaling amazonAutoScaling)
    {
        _amazonAutoScaling = amazonAutoScaling;
    }


    /// <summary>
    /// Create a new Amazon EC2 Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name to use for the new Auto Scaling
    /// group.</param>
    /// <param name="launchTemplateName">The name of the Amazon EC2 Auto Scaling
    /// launch template to use to create instances in the group.</param>
    /// <returns>A Boolean value indicating the success of the action.</returns>
    public async Task<bool> CreateAutoScalingGroupAsync(
        string groupName,
        string launchTemplateName,
        string availabilityZone)
    {
        var templateSpecification = new LaunchTemplateSpecification
        {
            LaunchTemplateName = launchTemplateName,
        };

        var zoneList = new List<string>
            {
                availabilityZone,
            };

        var request = new CreateAutoScalingGroupRequest
        {
            AutoScalingGroupName = groupName,
            AvailabilityZones = zoneList,
            LaunchTemplate = templateSpecification,
            MaxSize = 6,
            MinSize = 1
        };
        try
        {
            var response = await _amazonAutoScaling.CreateAutoScalingGroupAsync(request);
            Console.WriteLine($"{groupName} Auto Scaling Group created");
            return response.HttpStatusCode == System.Net.HttpStatusCode.OK;
        }
        catch (AlreadyExistsException)
        {
            Console.WriteLine($"{groupName} Auto Scaling Group already exists.");
            return true;
        }
    }



    /// <summary>
    /// Retrieve information about Amazon EC2 Auto Scaling quotas to the
    /// active AWS account.
    /// </summary>
    /// <returns>A Boolean value indicating the success of the action.</returns>
    public async Task<bool> DescribeAccountLimitsAsync()
    {
        var response = await _amazonAutoScaling.DescribeAccountLimitsAsync();
        Console.WriteLine("The maximum number of Auto Scaling groups is " + response.MaxNumberOfAutoScalingGroups);
        Console.WriteLine("The current number of Auto Scaling groups is " + response.NumberOfAutoScalingGroups);
        return response.HttpStatusCode == System.Net.HttpStatusCode.OK;
    }



    /// <summary>
    /// Retrieve a list of the Amazon EC2 Auto Scaling activities for an
    /// Amazon EC2 Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name of the Amazon EC2 Auto Scaling group.</param>
    /// <returns>A list of Amazon EC2 Auto Scaling activities.</returns>
    public async Task<List<Activity>> DescribeScalingActivitiesAsync(
        string groupName)
    {
        var activities = new List<Activity>();
        var scalingActivitiesRequest = new DescribeScalingActivitiesRequest
        {
            AutoScalingGroupName = groupName,
            MaxRecords = 10,
        };

        var response = await _amazonAutoScaling.DescribeScalingActivitiesAsync(scalingActivitiesRequest);
        if (response.Activities != null)
        {
            activities = response.Activities;
        }
        return activities;
    }



    /// <summary>
    /// Get data about the instances in an Amazon EC2 Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name of the Amazon EC2 Auto Scaling group.</param>
    /// <returns>A list of Amazon EC2 Auto Scaling details.</returns>
    public async Task<List<AutoScalingInstanceDetails>> DescribeAutoScalingInstancesAsync(
        string groupName)
    {
        var groups = await DescribeAutoScalingGroupsAsync(groupName);
        var instanceIds = new List<string>();
        var instanceDetails = new List<AutoScalingInstanceDetails>();
        if (groups != null)
        {
            groups.ForEach(group =>
            {
                if (group.AutoScalingGroupName == groupName && group.Instances != null)
                {
                    group.Instances.ForEach(instance =>
                    {
                        instanceIds.Add(instance.InstanceId);
                    });
                }
            });

            var scalingGroupsRequest = new DescribeAutoScalingInstancesRequest
            {
                MaxRecords = 10,
                InstanceIds = instanceIds,
            };

            var response =
                await _amazonAutoScaling.DescribeAutoScalingInstancesAsync(
                    scalingGroupsRequest);
            if (response.AutoScalingInstances != null)
            {
                instanceDetails = response.AutoScalingInstances;
            }
        }

        return instanceDetails;
    }



    /// <summary>
    /// Retrieve a list of information about Amazon EC2 Auto Scaling groups.
    /// </summary>
    /// <param name="groupName">The name of the Amazon EC2 Auto Scaling group.</param>
    /// <returns>A list of Amazon EC2 Auto Scaling groups.</returns>
    public async Task<List<AutoScalingGroup>> DescribeAutoScalingGroupsAsync(
        string groupName)
    {
        var groups = new List<AutoScalingGroup>();
        var groupList = new List<string>
            {
                groupName,
            };

        var request = new DescribeAutoScalingGroupsRequest
        {
            AutoScalingGroupNames = groupList,
        };

        var response = await _amazonAutoScaling.DescribeAutoScalingGroupsAsync(request);
        if (response.AutoScalingGroups != null)
        {
            groups = response.AutoScalingGroups;
        }

        return groups;
    }


    /// <summary>
    /// Delete an Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name of the Amazon EC2 Auto Scaling group.</param>
    /// <returns>A Boolean value indicating the success of the action.</returns>
    public async Task<bool> DeleteAutoScalingGroupAsync(
        string groupName)
    {
        var deleteAutoScalingGroupRequest = new DeleteAutoScalingGroupRequest
        {
            AutoScalingGroupName = groupName,
            ForceDelete = true,
        };

        var response = await _amazonAutoScaling.DeleteAutoScalingGroupAsync(deleteAutoScalingGroupRequest);
        if (response.HttpStatusCode == System.Net.HttpStatusCode.OK)
        {
            Console.WriteLine($"You successfully deleted {groupName}");
            return true;
        }

        Console.WriteLine($"Couldn't delete {groupName}.");
        return false;
    }


    /// <summary>
    /// Disable the collection of metric data for an Amazon EC2 Auto Scaling
    /// group.
    /// </summary>
    /// <param name="groupName">The name of the Auto Scaling group.</param>
    /// <returns>A Boolean value that indicates the success or failure of
    /// the operation.</returns>
    public async Task<bool> DisableMetricsCollectionAsync(string groupName)
    {
        var request = new DisableMetricsCollectionRequest
        {
            AutoScalingGroupName = groupName,
        };

        var response = await _amazonAutoScaling.DisableMetricsCollectionAsync(request);
        return response.HttpStatusCode == System.Net.HttpStatusCode.OK;
    }


    /// <summary>
    /// Enable the collection of metric data for an Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name of the Auto Scaling group.</param>
    /// <returns>A Boolean value indicating the success of the action.</returns>
    public async Task<bool> EnableMetricsCollectionAsync(string groupName)
    {
        var listMetrics = new List<string>
            {
                "GroupMaxSize",
            };

        var collectionRequest = new EnableMetricsCollectionRequest
        {
            AutoScalingGroupName = groupName,
            Metrics = listMetrics,
            Granularity = "1Minute",
        };

        var response = await _amazonAutoScaling.EnableMetricsCollectionAsync(collectionRequest);
        return response.HttpStatusCode == System.Net.HttpStatusCode.OK;
    }


    /// <summary>
    /// Set the desired capacity of an Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name of the Auto Scaling group.</param>
    /// <param name="desiredCapacity">The desired capacity for the Auto
    /// Scaling group.</param>
    /// <returns>A Boolean value indicating the success of the action.</returns>
    public async Task<bool> SetDesiredCapacityAsync(
        string groupName,
        int desiredCapacity)
    {
        var capacityRequest = new SetDesiredCapacityRequest
        {
            AutoScalingGroupName = groupName,
            DesiredCapacity = desiredCapacity,
        };

        var response = await _amazonAutoScaling.SetDesiredCapacityAsync(capacityRequest);
        Console.WriteLine($"You have set the DesiredCapacity to {desiredCapacity}.");

        return response.HttpStatusCode == System.Net.HttpStatusCode.OK;
    }


    /// <summary>
    /// Terminate all instances in the Auto Scaling group in preparation for
    /// deleting the group.
    /// </summary>
    /// <param name="instanceId">The instance Id of the instance to terminate.</param>
    /// <returns>A Boolean value that indicates the success or failure of
    /// the operation.</returns>
    public async Task<bool> TerminateInstanceInAutoScalingGroupAsync(
        string instanceId)
    {
        var request = new TerminateInstanceInAutoScalingGroupRequest
        {
            InstanceId = instanceId,
            ShouldDecrementDesiredCapacity = false,
        };

        var response = await _amazonAutoScaling.TerminateInstanceInAutoScalingGroupAsync(request);

        if (response.HttpStatusCode == System.Net.HttpStatusCode.OK)
        {
            Console.WriteLine($"You have terminated the instance: {instanceId}");
            return true;
        }

        Console.WriteLine($"Could not terminate {instanceId}");
        return false;
    }


    /// <summary>
    /// Update the capacity of an Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name of the Auto Scaling group.</param>
    /// <param name="launchTemplateName">The name of the EC2 launch template.</param>
    /// <param name="maxSize">The maximum number of instances that can be
    /// created for the Auto Scaling group.</param>
    /// <returns>A Boolean value indicating the success of the action.</returns>
    public async Task<bool> UpdateAutoScalingGroupAsync(
        string groupName,
        string launchTemplateName,
        int maxSize)
    {
        var templateSpecification = new LaunchTemplateSpecification
        {
            LaunchTemplateName = launchTemplateName,
        };

        var groupRequest = new UpdateAutoScalingGroupRequest
        {
            MaxSize = maxSize,
            AutoScalingGroupName = groupName,
            LaunchTemplate = templateSpecification,
        };

        var response = await _amazonAutoScaling.UpdateAutoScalingGroupAsync(groupRequest);
        if (response.HttpStatusCode == System.Net.HttpStatusCode.OK)
        {
            Console.WriteLine($"You successfully updated the Auto Scaling group {groupName}.");
            return true;
        }
        else
        {
            return false;
        }
    }

}


namespace AutoScalingActions;

using Amazon.EC2;
using Amazon.EC2.Model;

public class EC2Wrapper
{
    private readonly IAmazonEC2 _amazonEc2;

    /// <summary>
    /// Constructor for the EC2Wrapper class.
    /// </summary>
    /// <param name="amazonEc2">The injected Amazon EC2 client.</param>
    public EC2Wrapper(IAmazonEC2 amazonEc2)
    {
        _amazonEc2 = amazonEc2;
    }

    /// <summary>
    /// Create a new Amazon EC2 launch template.
    /// </summary>
    /// <param name="imageId">The image Id to use for instances launched
    /// using the Amazon EC2 launch template.</param>
    /// <param name="instanceType">The type of EC2 instances to create.</param>
    /// <param name="launchTemplateName">The name of the launch template.</param>
    /// <returns>Returns the TemplateID of the new launch template.</returns>
    public async Task<string> CreateLaunchTemplateAsync(
        string imageId,
        string instanceType,
        string launchTemplateName)
    {
        var request = new CreateLaunchTemplateRequest
        {
            LaunchTemplateData = new RequestLaunchTemplateData
            {
                ImageId = imageId,
                InstanceType = instanceType,
            },
            LaunchTemplateName = launchTemplateName,
        };

        var response = await _amazonEc2.CreateLaunchTemplateAsync(request);

        return response.LaunchTemplate.LaunchTemplateId;
    }

    /// <summary>
    /// Delete an Amazon EC2 launch template.
    /// </summary>
    /// <param name="launchTemplateId">The TemplateId of the launch template to
    /// delete.</param>
    /// <returns>The name of the EC2 launch template that was deleted.</returns>
    public async Task<string> DeleteLaunchTemplateAsync(string launchTemplateId)
    {
        var request = new DeleteLaunchTemplateRequest
        {
            LaunchTemplateId = launchTemplateId,
        };

        var response = await _amazonEc2.DeleteLaunchTemplateAsync(request);
        return response.LaunchTemplate.LaunchTemplateName;
    }

    /// <summary>
    /// Retrieve information about an EC2 launch template.
    /// </summary>
    /// <param name="launchTemplateName">The name of the EC2 launch template.</param>
    /// <returns>A Boolean value that indicates the success or failure of
    /// the operation.</returns>
    public async Task<bool> DescribeLaunchTemplateAsync(string launchTemplateName)
    {
        var request = new DescribeLaunchTemplatesRequest
        {
            LaunchTemplateNames = new List<string> { launchTemplateName, },
        };

        var response = await _amazonEc2.DescribeLaunchTemplatesAsync(request);

        if (response.LaunchTemplates is not null)
        {
            response.LaunchTemplates.ForEach(template =>
            {
                Console.Write($"{template.LaunchTemplateName}\t");
                Console.WriteLine(template.LaunchTemplateId);
            });

            return true;
        }

        return false;
    }

    /// <summary>
    /// Retrieve the availability zones for the current region.
    /// </summary>
    /// <returns>A collection of availability zones.</returns>
    public async Task<List<AvailabilityZone>> ListAvailabilityZonesAsync()
    {
        var response = await _amazonEc2.DescribeAvailabilityZonesAsync(
            new DescribeAvailabilityZonesRequest());

        return response.AvailabilityZones;
    }
}


namespace AutoScalingActions;

using Amazon.CloudWatch;
using Amazon.CloudWatch.Model;

/// <summary>
/// Contains methods to access Amazon CloudWatch metrics for the
/// Amazon EC2 Auto Scaling basics scenario.
/// </summary>
public class CloudWatchWrapper
{
    private readonly IAmazonCloudWatch _amazonCloudWatch;

    /// <summary>
    /// Constructor for the CloudWatchWrapper.
    /// </summary>
    /// <param name="amazonCloudWatch">The injected CloudWatch client.</param>
    public CloudWatchWrapper(IAmazonCloudWatch amazonCloudWatch)
    {
        _amazonCloudWatch = amazonCloudWatch;
    }

    /// <summary>
    /// Retrieve the metrics information collection for the Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name of the Auto Scaling group.</param>
    /// <returns>A list of Metrics collected for the Auto Scaling group.</returns>
    public async Task<List<Metric>> GetCloudWatchMetricsAsync(string groupName)
    {
        var metrics = new List<Metric>();
        var filter = new DimensionFilter
        {
            Name = "AutoScalingGroupName",
            Value = $"{groupName}",
        };

        var request = new ListMetricsRequest
        {
            MetricName = "AutoScalingGroupName",
            Dimensions = new List<DimensionFilter> { filter },
            Namespace = "AWS/AutoScaling",
        };

        var response = await _amazonCloudWatch.ListMetricsAsync(request);
        if (response.Metrics != null)
        {
            metrics = response.Metrics;
        }
        return metrics;
    }

    /// <summary>
    /// Retrieve the metric data collected for an Amazon EC2 Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name of the Amazon EC2 Auto Scaling group.</param>
    /// <returns>A list of data points.</returns>
    public async Task<List<Datapoint>> GetMetricStatisticsAsync(string groupName)
    {
        var dataPoints = new List<Datapoint>();
        var metricDimensions = new List<Dimension>
            {
                new Dimension
                {
                    Name = "AutoScalingGroupName",
                    Value = $"{groupName}",
                },
            };

        // The start time will be yesterday.
        var startTime = DateTime.UtcNow.AddDays(-1);

        var request = new GetMetricStatisticsRequest
        {
            MetricName = "AutoScalingGroupName",
            Dimensions = metricDimensions,
            Namespace = "AWS/AutoScaling",
            Period = 60, // 60 seconds.
            Statistics = new List<string>() { "Minimum" },
            StartTimeUtc = startTime,
            EndTimeUtc = DateTime.UtcNow,
        };

        var response = await _amazonCloudWatch.GetMetricStatisticsAsync(request);
        if (response.Datapoints != null)
        {
            dataPoints = response.Datapoints;
        }

        return dataPoints;
    }

}
```
+ Per informazioni dettagliate sull’API, consulta i seguenti argomenti nella *documentazione di riferimento dell’API AWS SDK per .NET *.
  + [CreateAutoScalingGroup](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/CreateAutoScalingGroup)
  + [DeleteAutoScalingGroup](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/DeleteAutoScalingGroup)
  + [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/DescribeAutoScalingGroups)
  + [DescribeAutoScalingInstances](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/DescribeAutoScalingInstances)
  + [DescribeScalingActivities](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/DescribeScalingActivities)
  + [DisableMetricsCollection](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/DisableMetricsCollection)
  + [EnableMetricsCollection](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/EnableMetricsCollection)
  + [SetDesiredCapacity](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/SetDesiredCapacity)
  + [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/TerminateInstanceInAutoScalingGroup)
  + [UpdateAutoScalingGroup](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/UpdateAutoScalingGroup)

------
#### [ C\$1\$1 ]

**SDK per C\$1\$1**  
 C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/autoscaling#code-examples). 

```
//! Routine which demonstrates using an Auto Scaling group
//! to manage Amazon EC2 instances.
/*!
  \sa groupsAndInstancesScenario()
  \param clientConfig: AWS client configuration.
  \return bool: Successful completion.
 */
bool AwsDoc::AutoScaling::groupsAndInstancesScenario(
        const Aws::Client::ClientConfiguration &clientConfig) {
    Aws::String templateName;
    Aws::EC2::EC2Client ec2Client(clientConfig);

    std::cout << std::setfill('*') << std::setw(ASTERISK_FILL_WIDTH) << " "
              << std::endl;
    std::cout
            << "Welcome to the Amazon Elastic Compute Cloud (Amazon EC2) Auto Scaling "
            << "demo for managing groups and instances." << std::endl;
    std::cout << std::setfill('*') << std::setw(ASTERISK_FILL_WIDTH) << " \n"
              << std::endl;

    std::cout << "This example requires an EC2 launch template." << std::endl;
    if (askYesNoQuestion(
            "Would you like to use an existing EC2 launch template (y/n)?  ")) {

        // 1. Specify the name of an existing EC2 launch template.
        templateName = askQuestion(
                "Enter the name of the existing EC2 launch template.  ");

        Aws::EC2::Model::DescribeLaunchTemplatesRequest request;
        request.AddLaunchTemplateNames(templateName);
        Aws::EC2::Model::DescribeLaunchTemplatesOutcome outcome =
                ec2Client.DescribeLaunchTemplates(request);

        if (outcome.IsSuccess()) {
            std::cout << "Validated the EC2 launch template '" << templateName
                      << "' exists by calling DescribeLaunchTemplate." << std::endl;
        }
        else {
            std::cerr << "Error validating the existence of the launch template. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
        }
    }
    else { // 2.  Or create a new EC2 launch template.
        templateName = askQuestion("Enter the name for a new EC2 launch template: ");

        Aws::EC2::Model::CreateLaunchTemplateRequest request;
        request.SetLaunchTemplateName(templateName);

        Aws::EC2::Model::RequestLaunchTemplateData requestLaunchTemplateData;
        requestLaunchTemplateData.SetInstanceType(EC2_LAUNCH_TEMPLATE_INSTANCE_TYPE);
        requestLaunchTemplateData.SetImageId(EC2_LAUNCH_TEMPLATE_IMAGE_ID);

        request.SetLaunchTemplateData(requestLaunchTemplateData);

        Aws::EC2::Model::CreateLaunchTemplateOutcome outcome =
                ec2Client.CreateLaunchTemplate(request);

        if (outcome.IsSuccess()) {
            std::cout << "The EC2 launch template '" << templateName << " was created."
                      << std::endl;
        }
        else if (outcome.GetError().GetExceptionName() ==
                 "InvalidLaunchTemplateName.AlreadyExistsException") {
            std::cout << "The EC2 template '" << templateName << "' already exists"
                      << std::endl;
        }
        else {
            std::cerr << "Error with EC2::CreateLaunchTemplate. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
        }
    }
    Aws::AutoScaling::AutoScalingClient autoScalingClient(clientConfig);
    std::cout << "Let's create an Auto Scaling group." << std::endl;
    Aws::String groupName = askQuestion(
            "Enter a name for the Auto Scaling group:  ");
    // 3. Retrieve a list of EC2 Availability Zones.
    Aws::Vector<Aws::EC2::Model::AvailabilityZone> availabilityZones;
    {
        Aws::EC2::Model::DescribeAvailabilityZonesRequest request;

        Aws::EC2::Model::DescribeAvailabilityZonesOutcome outcome =
                ec2Client.DescribeAvailabilityZones(request);

        if (outcome.IsSuccess()) {
            std::cout
                    << "EC2 instances can be created in the following Availability Zones:"
                    << std::endl;

            availabilityZones = outcome.GetResult().GetAvailabilityZones();
            for (size_t i = 0; i < availabilityZones.size(); ++i) {
                std::cout << "   " << i + 1 << ".  "
                          << availabilityZones[i].GetZoneName() << std::endl;
            }
        }
        else {
            std::cerr << "Error with EC2::DescribeAvailabilityZones. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
            cleanupResources("", templateName, autoScalingClient, ec2Client);
            return false;
        }
    }

    int availabilityZoneChoice = askQuestionForIntRange(
            "Choose an Availability Zone:  ", 1,
            static_cast<int>(availabilityZones.size()));
    // 4. Create an Auto Scaling group with the specified Availability Zone.
    {
        Aws::AutoScaling::Model::CreateAutoScalingGroupRequest request;
        request.SetAutoScalingGroupName(groupName);
        Aws::Vector<Aws::String> availabilityGroupZones;
        availabilityGroupZones.push_back(
                availabilityZones[availabilityZoneChoice - 1].GetZoneName());
        request.SetAvailabilityZones(availabilityGroupZones);
        request.SetMaxSize(1);
        request.SetMinSize(1);

        Aws::AutoScaling::Model::LaunchTemplateSpecification launchTemplateSpecification;
        launchTemplateSpecification.SetLaunchTemplateName(templateName);
        request.SetLaunchTemplate(launchTemplateSpecification);

        Aws::AutoScaling::Model::CreateAutoScalingGroupOutcome outcome =
                autoScalingClient.CreateAutoScalingGroup(request);

        if (outcome.IsSuccess()) {
            std::cout << "Created Auto Scaling group '" << groupName << "'..."
                      << std::endl;
        }
        else if (outcome.GetError().GetErrorType() ==
                 Aws::AutoScaling::AutoScalingErrors::ALREADY_EXISTS_FAULT) {
            std::cout << "Auto Scaling group '" << groupName << "' already exists."
                      << std::endl;
        }
        else {
            std::cerr << "Error with AutoScaling::CreateAutoScalingGroup. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
            cleanupResources("", templateName, autoScalingClient, ec2Client);
            return false;
        }
    }

    Aws::Vector<Aws::AutoScaling::Model::AutoScalingGroup> autoScalingGroups;
    if (AwsDoc::AutoScaling::describeGroup(groupName, autoScalingGroups,
                                           autoScalingClient)) {
        std::cout << "Here is the Auto Scaling group description." << std::endl;
        if (!autoScalingGroups.empty()) {
            logAutoScalingGroupInfo(autoScalingGroups);
        }
    }
    else {
        cleanupResources(groupName, templateName, autoScalingClient, ec2Client);
        return false;
    }

    std::cout
            << "Waiting for the EC2 instance in the Auto Scaling group to become active..."
            << std::endl;
    if (!waitForInstances(groupName, autoScalingGroups, autoScalingClient)) {
        cleanupResources(groupName, templateName, autoScalingClient, ec2Client);
        return false;
    }

    bool enableMetrics = askYesNoQuestion(
            "Do you want to collect metrics about the A"
            "Auto Scaling group during this demo (y/n)?  ");
    // 7. Optionally enable metrics collection for the Auto Scaling group.
    if (enableMetrics) {
        Aws::AutoScaling::Model::EnableMetricsCollectionRequest request;
        request.SetAutoScalingGroupName(groupName);

        request.AddMetrics("GroupMinSize");
        request.AddMetrics("GroupMaxSize");
        request.AddMetrics("GroupDesiredCapacity");
        request.AddMetrics("GroupInServiceInstances");
        request.AddMetrics("GroupTotalInstances");
        request.SetGranularity("1Minute");

        Aws::AutoScaling::Model::EnableMetricsCollectionOutcome outcome =
                autoScalingClient.EnableMetricsCollection(request);
        if (outcome.IsSuccess()) {
            std::cout << "Auto Scaling metrics have been enabled."
                      << std::endl;
        }
        else {
            std::cerr << "Error with AutoScaling::EnableMetricsCollection. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
            cleanupResources(groupName, templateName, autoScalingClient, ec2Client);
            return false;
        }
    }

    std::cout << "Let's update the maximum number of EC2 instances in '" << groupName <<
              "' from 1 to 3." << std::endl;
    askQuestion("Press enter to continue:  ", alwaysTrueTest);
    // 8. Update the Auto Scaling group, setting a new maximum size.
    {
        Aws::AutoScaling::Model::UpdateAutoScalingGroupRequest request;
        request.SetAutoScalingGroupName(groupName);
        request.SetMaxSize(3);

        Aws::AutoScaling::Model::UpdateAutoScalingGroupOutcome outcome =
                autoScalingClient.UpdateAutoScalingGroup(request);

        if (!outcome.IsSuccess()) {
            std::cerr << "Error with AutoScaling::UpdateAutoScalingGroup. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
            cleanupResources(groupName, templateName, autoScalingClient, ec2Client);
            return false;
        }
    }

    if (AwsDoc::AutoScaling::describeGroup(groupName, autoScalingGroups,
                                           autoScalingClient)) {
        if (!autoScalingGroups.empty()) {
            const auto &instances = autoScalingGroups[0].GetInstances();
            std::cout
                    << "The group still has one running EC2 instance, but it can have up to 3.\n"
                    << std::endl;
            logAutoScalingGroupInfo(autoScalingGroups);
        }
        else {
            std::cerr
                    << "No EC2 launch groups were retrieved from DescribeGroup request."
                    << std::endl;
            cleanupResources(groupName, templateName, autoScalingClient, ec2Client);
            return false;
        }
    }

    std::cout << "\n" << std::setfill('*') << std::setw(ASTERISK_FILL_WIDTH) << "\n"
              << std::endl;
    std::cout << "Let's update the desired capacity in '" << groupName <<
              "' from 1 to 2." << std::endl;
    askQuestion("Press enter to continue:  ", alwaysTrueTest);
    //  9. Update the Auto Scaling group, setting a new desired capacity.
    {
        Aws::AutoScaling::Model::SetDesiredCapacityRequest request;
        request.SetAutoScalingGroupName(groupName);
        request.SetDesiredCapacity(2);

        Aws::AutoScaling::Model::SetDesiredCapacityOutcome outcome =
                autoScalingClient.SetDesiredCapacity(request);

        if (!outcome.IsSuccess()) {
            std::cerr << "Error with AutoScaling::SetDesiredCapacityRequest. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
            cleanupResources(groupName, templateName, autoScalingClient, ec2Client);
            return false;
        }
    }

    if (AwsDoc::AutoScaling::describeGroup(groupName, autoScalingGroups,
                                           autoScalingClient)) {
        if (!autoScalingGroups.empty()) {
            std::cout
                    << "Here is the current state of the group." << std::endl;
            logAutoScalingGroupInfo(autoScalingGroups);
        }
        else {
            std::cerr
                    << "No EC2 launch groups were retrieved from DescribeGroup request."
                    << std::endl;
            cleanupResources(groupName, templateName, autoScalingClient, ec2Client);
            return false;
        }
    }

    std::cout << "Waiting for the new EC2 instance to start..." << std::endl;
    waitForInstances(groupName, autoScalingGroups, autoScalingClient);

    std::cout << "\n" << std::setfill('*') << std::setw(ASTERISK_FILL_WIDTH) << "\n"
              << std::endl;

    std::cout << "Let's terminate one of the EC2 instances in " << groupName << "."
              << std::endl;
    std::cout << "Because the desired capacity is 2, another EC2 instance will start "
              << "to replace the terminated EC2 instance."
              << std::endl;
    std::cout << "The currently running EC2 instances are:" << std::endl;

    if (autoScalingGroups.empty()) {
        std::cerr << "Error describing groups. No groups returned." << std::endl;
        cleanupResources(groupName, templateName, autoScalingClient, ec2Client);
        return false;
    }

    int instanceNumber = 1;
    Aws::Vector<Aws::String> instanceIDs = instancesToInstanceIDs(
            autoScalingGroups[0].GetInstances());
    for (const Aws::String &instanceID: instanceIDs) {
        std::cout << "   " << instanceNumber << ". " << instanceID << std::endl;
        ++instanceNumber;
    }

    instanceNumber = askQuestionForIntRange("Which EC2 instance do you want to stop? ",
                                            1,
                                            static_cast<int>(instanceIDs.size()));

    // 10. Terminate an EC2 instance in the Auto Scaling group.
    {
        Aws::AutoScaling::Model::TerminateInstanceInAutoScalingGroupRequest request;
        request.SetInstanceId(instanceIDs[instanceNumber - 1]);
        request.SetShouldDecrementDesiredCapacity(false);

        Aws::AutoScaling::Model::TerminateInstanceInAutoScalingGroupOutcome outcome =
                autoScalingClient.TerminateInstanceInAutoScalingGroup(request);

        if (outcome.IsSuccess()) {
            std::cout << "Waiting for EC2 instance with ID '"
                      << instanceIDs[instanceNumber - 1] << "' to terminate..."
                      << std::endl;
        }
        else {
            std::cerr << "Error with AutoScaling::TerminateInstanceInAutoScalingGroup. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
            cleanupResources(groupName, templateName, autoScalingClient, ec2Client);
            return false;
        }
    }

    waitForInstances(groupName, autoScalingGroups, autoScalingClient);

    std::cout << "\n" << std::setfill('*') << std::setw(ASTERISK_FILL_WIDTH) << "\n"
              << std::endl;
    std::cout << "Let's get a report of scaling activities for EC2 launch group '"
              << groupName << "'."
              << std::endl;
    askQuestion("Press enter to continue:  ", alwaysTrueTest);
    // 11. Get a description of activities for the Auto Scaling group.
    {
        Aws::AutoScaling::Model::DescribeScalingActivitiesRequest request;
        request.SetAutoScalingGroupName(groupName);

        Aws::Vector<Aws::AutoScaling::Model::Activity> allActivities;
        Aws::String nextToken; // Used for pagination;
        do {
            if (!nextToken.empty()) {
                request.SetNextToken(nextToken);
            }
            Aws::AutoScaling::Model::DescribeScalingActivitiesOutcome outcome =
                    autoScalingClient.DescribeScalingActivities(request);

            if (outcome.IsSuccess()) {
                const Aws::Vector<Aws::AutoScaling::Model::Activity> &activities =
                        outcome.GetResult().GetActivities();
                allActivities.insert(allActivities.end(), activities.begin(), activities.end());
                nextToken  = outcome.GetResult().GetNextToken();
            }
            else {
                std::cerr << "Error with AutoScaling::DescribeScalingActivities. "
                          << outcome.GetError().GetMessage()
                          << std::endl;
                cleanupResources(groupName, templateName, autoScalingClient, ec2Client);
                return false;
            }
        } while (!nextToken.empty());

        std::cout << "Found " << allActivities.size() << " activities."
                  << std::endl;
        std::cout << "Activities are ordered with the most recent first."
                  << std::endl;
        for (const Aws::AutoScaling::Model::Activity &activity: allActivities) {
            std::cout << activity.GetDescription() << std::endl;
            std::cout << activity.GetDetails() << std::endl;
        }
    }

    if (enableMetrics) {
        if (!logAutoScalingMetrics(groupName, clientConfig)) {
            cleanupResources(groupName, templateName, autoScalingClient, ec2Client);
            return false;
        }
    }

    std::cout << "Let's  clean up." << std::endl;
    askQuestion("Press enter to continue:  ", alwaysTrueTest);

    // 13. Disable metrics collection if enabled.
    if (enableMetrics) {
        Aws::AutoScaling::Model::DisableMetricsCollectionRequest request;
        request.SetAutoScalingGroupName(groupName);

        Aws::AutoScaling::Model::DisableMetricsCollectionOutcome outcome =
                autoScalingClient.DisableMetricsCollection(request);

        if (outcome.IsSuccess()) {
            std::cout << "Metrics collection has been disabled." << std::endl;
        }
        else {
            std::cerr << "Error with AutoScaling::DisableMetricsCollection. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
            cleanupResources(groupName, templateName, autoScalingClient, ec2Client);
            return false;
        }
    }

    return cleanupResources(groupName, templateName, autoScalingClient, ec2Client);
}

//! Routine which waits for EC2 instances in an Auto Scaling group to
//! complete startup or shutdown.
/*!
 \sa waitForInstances()
 \param groupName: An Auto Scaling group name.
 \param autoScalingGroups: Vector to receive 'AutoScalingGroup' records.
 \param client: 'AutoScalingClient' instance.
 \return bool: Successful completion.
 */
bool AwsDoc::AutoScaling::waitForInstances(const Aws::String &groupName,
                                           Aws::Vector<Aws::AutoScaling::Model::AutoScalingGroup> &autoScalingGroups,
                                           const Aws::AutoScaling::AutoScalingClient &client) {
    bool ready = false;
    const std::vector<Aws::String> READY_STATES = {"InService", "Terminated"};

    int count = 0;
    int desiredCapacity = 0;
    std::this_thread::sleep_for(std::chrono::seconds(4));
    while (!ready) {
        if (WAIT_FOR_INSTANCES_TIMEOUT < count) {
            std::cerr << "Wait for instance timed out." << std::endl;
            return false;
        }

        std::this_thread::sleep_for(std::chrono::seconds(1));
        ++count;
        if (!describeGroup(groupName, autoScalingGroups, client)) {
            return false;
        }
        Aws::Vector<Aws::String> instanceIDs;
        if (!autoScalingGroups.empty()) {
            instanceIDs = instancesToInstanceIDs(autoScalingGroups[0].GetInstances());
            desiredCapacity = autoScalingGroups[0].GetDesiredCapacity();
        }

        if (instanceIDs.empty()) {
            if (desiredCapacity == 0) {
                break;
            }
            else {
                if ((count % 5) == 0) {
                    std::cout << "No instance IDs returned for group." << std::endl;
                }

                continue;
            }
        }

        // 6.  Check lifecycle state of the instances using DescribeAutoScalingInstances.
        Aws::AutoScaling::Model::DescribeAutoScalingInstancesRequest request;
        request.SetInstanceIds(instanceIDs);

        Aws::AutoScaling::Model::DescribeAutoScalingInstancesOutcome outcome =
                client.DescribeAutoScalingInstances(request);

        if (outcome.IsSuccess()) {
            const Aws::Vector<Aws::AutoScaling::Model::AutoScalingInstanceDetails> &instancesDetails =
                    outcome.GetResult().GetAutoScalingInstances();
            ready = instancesDetails.size() >= desiredCapacity;
            for (const Aws::AutoScaling::Model::AutoScalingInstanceDetails &details: instancesDetails) {
                if (!stringInVector(details.GetLifecycleState(), READY_STATES)) {
                    ready = false;
                    break;
                }
            }
            // Log the status while waiting.
            if (((count % 5) == 1) || ready) {
                logInstancesLifecycleState(instancesDetails);
            }
        }
        else {
            std::cerr << "Error with AutoScaling::DescribeAutoScalingInstances. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
            return false;
        }
    }

    if (!describeGroup(groupName, autoScalingGroups, client)) {
        return false;
    }

    return true;
}

//! Routine to cleanup resources created in 'groupsAndInstancesScenario'.
/*!
 \sa cleanupResources()
 \param groupName: Optional Auto Scaling group name.
 \param templateName: Optional EC2 launch template name.
 \param autoScalingClient: 'AutoScalingClient' instance.
 \param ec2Client: 'EC2Client' instance.
\return bool: Successful completion.
 */
bool AwsDoc::AutoScaling::cleanupResources(const Aws::String &groupName,
                                           const Aws::String &templateName,
                                           const Aws::AutoScaling::AutoScalingClient &autoScalingClient,
                                           const Aws::EC2::EC2Client &ec2Client) {
    bool result = true;

    // 14. Delete the Auto Scaling group.
    if (!groupName.empty() &&
        (askYesNoQuestion(
                Aws::String("Delete the Auto Scaling group '") + groupName +
                "'  (y/n)?"))) {
        {
            Aws::AutoScaling::Model::UpdateAutoScalingGroupRequest request;
            request.SetAutoScalingGroupName(groupName);
            request.SetMinSize(0);
            request.SetDesiredCapacity(0);

            Aws::AutoScaling::Model::UpdateAutoScalingGroupOutcome outcome =
                    autoScalingClient.UpdateAutoScalingGroup(request);

            if (outcome.IsSuccess()) {
                std::cout
                        << "The minimum size and desired capacity of the Auto Scaling group "
                        << "was set to zero before terminating the instances."
                        << std::endl;
            }
            else {
                std::cerr << "Error with AutoScaling::UpdateAutoScalingGroup. "
                          << outcome.GetError().GetMessage() << std::endl;
                result = false;
            }
        }

        Aws::Vector<Aws::AutoScaling::Model::AutoScalingGroup> autoScalingGroups;
        if (AwsDoc::AutoScaling::describeGroup(groupName, autoScalingGroups,
                                               autoScalingClient)) {
            if (!autoScalingGroups.empty()) {
                Aws::Vector<Aws::String> instanceIDs = instancesToInstanceIDs(
                        autoScalingGroups[0].GetInstances());
                for (const Aws::String &instanceID: instanceIDs) {
                    Aws::AutoScaling::Model::TerminateInstanceInAutoScalingGroupRequest request;
                    request.SetInstanceId(instanceID);
                    request.SetShouldDecrementDesiredCapacity(true);

                    Aws::AutoScaling::Model::TerminateInstanceInAutoScalingGroupOutcome outcome =
                            autoScalingClient.TerminateInstanceInAutoScalingGroup(
                                    request);

                    if (outcome.IsSuccess()) {
                        std::cout << "Initiating termination of EC2 instance '"
                                  << instanceID << "'." << std::endl;
                    }
                    else {
                        std::cerr
                                << "Error with AutoScaling::TerminateInstanceInAutoScalingGroup. "
                                << outcome.GetError().GetMessage() << std::endl;
                        result = false;
                    }
                }
            }

            std::cout
                    << "Waiting for the EC2 instances to terminate before deleting the "
                    << "Auto Scaling group..." << std::endl;
            waitForInstances(groupName, autoScalingGroups, autoScalingClient);
        }

        {
            Aws::AutoScaling::Model::DeleteAutoScalingGroupRequest request;
            request.SetAutoScalingGroupName(groupName);

            Aws::AutoScaling::Model::DeleteAutoScalingGroupOutcome outcome =
                    autoScalingClient.DeleteAutoScalingGroup(request);

            if (outcome.IsSuccess()) {
                std::cout << "Auto Scaling group '" << groupName << "' was deleted."
                          << std::endl;
            }
            else {
                std::cerr << "Error with AutoScaling::DeleteAutoScalingGroup. "
                          << outcome.GetError().GetMessage()
                          << std::endl;
                result = false;
            }
        }
    }

    // 15. Delete the EC2 launch template.
    if (!templateName.empty() && (askYesNoQuestion(
            Aws::String("Delete the EC2 launch template '") + templateName +
            "' (y/n)?"))) {
        Aws::EC2::Model::DeleteLaunchTemplateRequest request;
        request.SetLaunchTemplateName(templateName);

        Aws::EC2::Model::DeleteLaunchTemplateOutcome outcome =
                ec2Client.DeleteLaunchTemplate(request);

        if (outcome.IsSuccess()) {
            std::cout << "EC2 launch template '" << templateName << "' was deleted."
                      << std::endl;
        }
        else {
            std::cerr << "Error with EC2::DeleteLaunchTemplate. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
            result = false;
        }
    }

    return result;
}

//! Routine which retrieves Auto Scaling group descriptions.
/*!
 \sa describeGroup()
 \param groupName: An Auto Scaling group name.
 \param autoScalingGroups: Vector to receive 'AutoScalingGroup' records.
 \param client: 'AutoScalingClient' instance.
 \return bool: Successful completion.
 */
bool AwsDoc::AutoScaling::describeGroup(const Aws::String &groupName,
                                        Aws::Vector<Aws::AutoScaling::Model::AutoScalingGroup> &autoScalingGroup,
                                        const Aws::AutoScaling::AutoScalingClient &client) {
    // 5. Retrieve a description of the Auto Scaling group.
    Aws::AutoScaling::Model::DescribeAutoScalingGroupsRequest request;
    Aws::Vector<Aws::String> groupNames;
    groupNames.push_back(groupName);
    request.SetAutoScalingGroupNames(groupNames);

    Aws::AutoScaling::Model::DescribeAutoScalingGroupsOutcome outcome =
            client.DescribeAutoScalingGroups(request);

    if (outcome.IsSuccess()) {
        autoScalingGroup = outcome.GetResult().GetAutoScalingGroups();
    }
    else {
        std::cerr << "Error with AutoScaling::DescribeAutoScalingGroups. "
                  << outcome.GetError().GetMessage()
                  << std::endl;
    }

    return outcome.IsSuccess();
}
```
+ Per informazioni dettagliate sull'API, consulta i seguenti argomenti nella *documentazione di riferimento dell’API AWS SDK per C\$1\$1 *.
  + [CreateAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/CreateAutoScalingGroup)
  + [DeleteAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/DeleteAutoScalingGroup)
  + [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/DescribeAutoScalingGroups)
  + [DescribeAutoScalingInstances](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/DescribeAutoScalingInstances)
  + [DescribeScalingActivities](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/DescribeScalingActivities)
  + [DisableMetricsCollection](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/DisableMetricsCollection)
  + [EnableMetricsCollection](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/EnableMetricsCollection)
  + [SetDesiredCapacity](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/SetDesiredCapacity)
  + [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/TerminateInstanceInAutoScalingGroup)
  + [UpdateAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/UpdateAutoScalingGroup)

------
#### [ Java ]

**SDK per Java 2.x**  
 C'è dell'altro GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/autoscale#code-examples). 

```
/**
 * Before running this SDK for Java (v2) code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 *
 * In addition, create a launch template. For more information, see the
 * following topic:
 *
 * https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-launch-templates.html#create-launch-template
 *
 * This code example performs the following operations:
 * 1. Creates an Auto Scaling group using an AutoScalingWaiter.
 * 2. Gets a specific Auto Scaling group and returns an instance Id value.
 * 3. Describes Auto Scaling with the Id value.
 * 4. Enables metrics collection.
 * 5. Update an Auto Scaling group.
 * 6. Describes Account details.
 * 7. Describe account details"
 * 8. Updates an Auto Scaling group to use an additional instance.
 * 9. Gets the specific Auto Scaling group and gets the number of instances.
 * 10. List the scaling activities that have occurred for the group.
 * 11. Terminates an instance in the Auto Scaling group.
 * 12. Stops the metrics collection.
 * 13. Deletes the Auto Scaling group.
 */

public class AutoScalingScenario {
    public static final String DASHES = new String(new char[80]).replace("\0", "-");
    private static final String ROLES_STACK = "MyCdkAutoScaleStack";
    public static void main(String[] args) throws InterruptedException {
        final String usage = """

                Usage:
                    <groupName>

                Where:
                    groupName - The name of the Auto Scaling group.
                """;

        String groupName = "MyAutoScalingGroup2";
        AutoScalingClient autoScalingClient = AutoScalingClient.builder()
                .region(Region.US_WEST_2)
                .build();

        Ec2Client ec2 = Ec2Client.builder()
                .region(Region.US_WEST_2)
                .build();

        System.out.println(DASHES);
        System.out.println("Welcome to the Amazon EC2 Auto Scaling example scenario.");
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("First, we will create a launch template using a CloudFormation script");
        CloudFormationHelper.deployCloudFormationStack(ROLES_STACK);
        Map<String, String> stackOutputs = CloudFormationHelper.getStackOutputsAsync(ROLES_STACK).join();
        String launchTemplateName = stackOutputs.get("LaunchTemplateNameOutput");
        String vpcZoneId = getVPC(ec2);
        updateTemlate(ec2, launchTemplateName );
        System.out.println("The VPC zone id created by the CloudFormation stack is"+vpcZoneId);

        System.out.println("1. Create an Auto Scaling group named " + groupName);
        createAutoScalingGroup(autoScalingClient, ec2, groupName, launchTemplateName, vpcZoneId);

        System.out.println(
                "Wait 1 min for the resources, including the instance. Otherwise, an empty instance Id is returned");
        Thread.sleep(60000);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("2. Get Auto Scale group Id value");
        String instanceId = getSpecificAutoScalingGroups(autoScalingClient, groupName);
        if (instanceId.compareTo("") == 0) {
            System.out.println("Error - no instance Id value");
            System.exit(1);
        } else {
            System.out.println("The instance Id value is " + instanceId);
        }
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("3. Describe Auto Scaling with the Id value " + instanceId);
        describeAutoScalingInstance(autoScalingClient, instanceId);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("4. Enable metrics collection " + instanceId);
        enableMetricsCollection(autoScalingClient, groupName);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("5. Update an Auto Scaling group to update max size to 3");
        updateAutoScalingGroup(autoScalingClient, groupName, launchTemplateName);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("6. Describe Auto Scaling groups");
        describeAutoScalingGroups(autoScalingClient, groupName);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("7. Describe account details");
        describeAccountLimits(autoScalingClient);
        System.out.println(
                "Wait 1 min for the resources, including the instance. Otherwise, an empty instance Id is returned");
        Thread.sleep(60000);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("8. Set desired capacity to 2");
        setDesiredCapacity(autoScalingClient, groupName);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("9. Get the two instance Id values and state");
        getSpecificAutoScalingGroups(autoScalingClient, groupName);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("10. List the scaling activities that have occurred for the group");
        describeScalingActivities(autoScalingClient, groupName);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("11. Terminate an instance in the Auto Scaling group");
        terminateInstanceInAutoScalingGroup(autoScalingClient, instanceId);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("12. Stop the metrics collection");
        disableMetricsCollection(autoScalingClient, groupName);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("13. Delete the Auto Scaling group and cloud formation resources");
        CloudFormationHelper.destroyCloudFormationStack(ROLES_STACK);
        deleteAutoScalingGroup(autoScalingClient, groupName);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("The Scenario has successfully completed.");
        System.out.println(DASHES);

        autoScalingClient.close();
    }

    public static String getVPC(Ec2Client ec2) {
        try {
            DescribeVpcsRequest request = DescribeVpcsRequest.builder()
                    .filters(f -> f.name("isDefault").values("true"))
                    .build();

            DescribeVpcsResponse response = ec2.describeVpcs(request);

            if (!response.vpcs().isEmpty()) {
                Vpc defaultVpc = response.vpcs().get(0);
                System.out.println("Default VPC ID: " + defaultVpc.vpcId());
                return defaultVpc.vpcId();
            } else {
                System.out.println("No default VPC found.");
                return null; // Return null if no default VPC is found
            }

        } catch (Ec2Exception e) {
            System.err.println("EC2 error: " + e.awsErrorDetails().errorMessage());
            return null; // Return null in case of an error
        }
    }


    public static void updateTemlate(Ec2Client ec2, String launchTemplateName ) {
        // Step 1: Create new launch template version
        String newAmiId = "ami-0025f0db847eb6254";
        RequestLaunchTemplateData launchTemplateData = RequestLaunchTemplateData.builder()
                .imageId(newAmiId)
                .build();

        CreateLaunchTemplateVersionRequest createVersionRequest = CreateLaunchTemplateVersionRequest.builder()
                .launchTemplateName(launchTemplateName)
                .versionDescription("Updated with valid AMI")
                .sourceVersion("1")
                .launchTemplateData(launchTemplateData)
                .build();

        CreateLaunchTemplateVersionResponse createResponse = ec2.createLaunchTemplateVersion(createVersionRequest);
        int newVersionNumber = createResponse.launchTemplateVersion().versionNumber().intValue();

        // Step 2: Modify default version
        ModifyLaunchTemplateRequest modifyRequest = ModifyLaunchTemplateRequest.builder()
                .launchTemplateName(launchTemplateName)
                .defaultVersion(String.valueOf(newVersionNumber))
                .build();

        ec2.modifyLaunchTemplate(modifyRequest);
        System.out.println("Updated launch template to version " + newVersionNumber + " with AMI " + newAmiId);
    }


    public static void describeScalingActivities(AutoScalingClient autoScalingClient, String groupName) {
        try {
            DescribeScalingActivitiesRequest scalingActivitiesRequest = DescribeScalingActivitiesRequest.builder()
                    .autoScalingGroupName(groupName)
                    .maxRecords(10)
                    .build();

            DescribeScalingActivitiesResponse response = autoScalingClient
                    .describeScalingActivities(scalingActivitiesRequest);
            List<Activity> activities = response.activities();
            for (Activity activity : activities) {
                System.out.println("The activity Id is " + activity.activityId());
                System.out.println("The activity details are " + activity.details());
            }

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    public static void setDesiredCapacity(AutoScalingClient autoScalingClient, String groupName) {
        try {
            SetDesiredCapacityRequest capacityRequest = SetDesiredCapacityRequest.builder()
                    .autoScalingGroupName(groupName)
                    .desiredCapacity(2)
                    .build();

            autoScalingClient.setDesiredCapacity(capacityRequest);
            System.out.println("You have set the DesiredCapacity to 2");

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    public static void createAutoScalingGroup(AutoScalingClient autoScalingClient,
                                              Ec2Client ec2Client,
                                              String groupName,
                                              String launchTemplateName,
                                              String vpcId) {
        try {
            // Step 1: Get one subnet ID in the given VPC
            DescribeSubnetsRequest subnetRequest = DescribeSubnetsRequest.builder()
                    .filters(Filter.builder().name("vpc-id").values(vpcId).build())
                    .build();

            DescribeSubnetsResponse subnetResponse = ec2Client.describeSubnets(subnetRequest);

            if (subnetResponse.subnets().isEmpty()) {
                throw new RuntimeException("No subnets found in VPC: " + vpcId);
            }

            String subnetId = subnetResponse.subnets().get(0).subnetId(); // Use first subnet
            System.out.println("Using subnet: " + subnetId);

            // Step 2: Create launch template reference
            LaunchTemplateSpecification templateSpecification = LaunchTemplateSpecification.builder()
                    .launchTemplateName(launchTemplateName)
                    .build();

            // Step 3: Create Auto Scaling group
            CreateAutoScalingGroupRequest request = CreateAutoScalingGroupRequest.builder()
                    .autoScalingGroupName(groupName)
                    .launchTemplate(templateSpecification)
                    .minSize(1)
                    .maxSize(1)
                    .vpcZoneIdentifier(subnetId)  // Correct: subnet ID, not VPC ID
                    .build();

            autoScalingClient.createAutoScalingGroup(request);

            // Step 4: Wait until group is created
            AutoScalingWaiter waiter = autoScalingClient.waiter();
            DescribeAutoScalingGroupsRequest groupsRequest = DescribeAutoScalingGroupsRequest.builder()
                    .autoScalingGroupNames(groupName)
                    .build();

            WaiterResponse<DescribeAutoScalingGroupsResponse> waiterResponse =
                    waiter.waitUntilGroupExists(groupsRequest);

            waiterResponse.matched().response().ifPresent(System.out::println);
            System.out.println("Auto Scaling Group created");

        } catch (Ec2Exception | AutoScalingException e) {
            System.err.println("Error: " + e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    public static void describeAutoScalingInstance(AutoScalingClient autoScalingClient, String id) {
        try {
            DescribeAutoScalingInstancesRequest describeAutoScalingInstancesRequest = DescribeAutoScalingInstancesRequest
                    .builder()
                    .instanceIds(id)
                    .build();

            DescribeAutoScalingInstancesResponse response = autoScalingClient
                    .describeAutoScalingInstances(describeAutoScalingInstancesRequest);
            List<AutoScalingInstanceDetails> instances = response.autoScalingInstances();
            for (AutoScalingInstanceDetails instance : instances) {
                System.out.println("The instance lifecycle state is: " + instance.lifecycleState());
            }

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    public static void describeAutoScalingGroups(AutoScalingClient autoScalingClient, String groupName) {
        try {
            DescribeAutoScalingGroupsRequest groupsRequest = DescribeAutoScalingGroupsRequest.builder()
                    .autoScalingGroupNames(groupName)
                    .maxRecords(10)
                    .build();

            DescribeAutoScalingGroupsResponse response = autoScalingClient.describeAutoScalingGroups(groupsRequest);
            List<AutoScalingGroup> groups = response.autoScalingGroups();
            for (AutoScalingGroup group : groups) {
                System.out.println("*** The service to use for the health checks: " + group.healthCheckType());
            }

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    public static String getSpecificAutoScalingGroups(AutoScalingClient autoScalingClient, String groupName) {
        try {
            String instanceId = "";
            DescribeAutoScalingGroupsRequest scalingGroupsRequest = DescribeAutoScalingGroupsRequest.builder()
                    .autoScalingGroupNames(groupName)
                    .build();

            DescribeAutoScalingGroupsResponse response = autoScalingClient
                    .describeAutoScalingGroups(scalingGroupsRequest);
            List<AutoScalingGroup> groups = response.autoScalingGroups();
            for (AutoScalingGroup group : groups) {
                System.out.println("The group name is " + group.autoScalingGroupName());
                System.out.println("The group ARN is " + group.autoScalingGroupARN());
                List<Instance> instances = group.instances();

                for (Instance instance : instances) {
                    instanceId = instance.instanceId();
                    System.out.println("The instance id is " + instanceId);
                    System.out.println("The lifecycle state is " + instance.lifecycleState());
                }
            }

            return instanceId;
        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
        return "";
    }

    public static void enableMetricsCollection(AutoScalingClient autoScalingClient, String groupName) {
        try {
            EnableMetricsCollectionRequest collectionRequest = EnableMetricsCollectionRequest.builder()
                    .autoScalingGroupName(groupName)
                    .metrics("GroupMaxSize")
                    .granularity("1Minute")
                    .build();

            autoScalingClient.enableMetricsCollection(collectionRequest);
            System.out.println("The enable metrics collection operation was successful");

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    public static void disableMetricsCollection(AutoScalingClient autoScalingClient, String groupName) {
        try {
            DisableMetricsCollectionRequest disableMetricsCollectionRequest = DisableMetricsCollectionRequest.builder()
                    .autoScalingGroupName(groupName)
                    .metrics("GroupMaxSize")
                    .build();

            autoScalingClient.disableMetricsCollection(disableMetricsCollectionRequest);
            System.out.println("The disable metrics collection operation was successful");

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    public static void describeAccountLimits(AutoScalingClient autoScalingClient) {
        try {
            DescribeAccountLimitsResponse response = autoScalingClient.describeAccountLimits();
            System.out.println("The max number of auto scaling groups is " + response.maxNumberOfAutoScalingGroups());
            System.out.println("The current number of auto scaling groups is " + response.numberOfAutoScalingGroups());

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    public static void updateAutoScalingGroup(AutoScalingClient autoScalingClient, String groupName,
            String launchTemplateName) {
        try {
            AutoScalingWaiter waiter = autoScalingClient.waiter();
            LaunchTemplateSpecification templateSpecification = LaunchTemplateSpecification.builder()
                    .launchTemplateName(launchTemplateName)
                    .build();

            UpdateAutoScalingGroupRequest groupRequest = UpdateAutoScalingGroupRequest.builder()
                    .maxSize(3)
                    .autoScalingGroupName(groupName)
                    .launchTemplate(templateSpecification)
                    .build();

            autoScalingClient.updateAutoScalingGroup(groupRequest);
            DescribeAutoScalingGroupsRequest groupsRequest = DescribeAutoScalingGroupsRequest.builder()
                    .autoScalingGroupNames(groupName)
                    .build();

            WaiterResponse<DescribeAutoScalingGroupsResponse> waiterResponse = waiter
                    .waitUntilGroupInService(groupsRequest);
            waiterResponse.matched().response().ifPresent(System.out::println);
            System.out.println("You successfully updated the auto scaling group  " + groupName);

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    public static void terminateInstanceInAutoScalingGroup(AutoScalingClient autoScalingClient, String instanceId) {
        try {
            TerminateInstanceInAutoScalingGroupRequest request = TerminateInstanceInAutoScalingGroupRequest.builder()
                    .instanceId(instanceId)
                    .shouldDecrementDesiredCapacity(false)
                    .build();

            autoScalingClient.terminateInstanceInAutoScalingGroup(request);
            System.out.println("You have terminated instance " + instanceId);

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    public static void deleteAutoScalingGroup(AutoScalingClient autoScalingClient, String groupName) {
        try {
            DeleteAutoScalingGroupRequest deleteAutoScalingGroupRequest = DeleteAutoScalingGroupRequest.builder()
                    .autoScalingGroupName(groupName)
                    .forceDelete(true)
                    .build();

            autoScalingClient.deleteAutoScalingGroup(deleteAutoScalingGroupRequest);
            System.out.println("You successfully deleted " + groupName);

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}
```
+ Per informazioni dettagliate sull'API, consulta i seguenti argomenti nella *documentazione di riferimento dell’API AWS SDK for Java 2.x *.
  + [CreateAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/CreateAutoScalingGroup)
  + [DeleteAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/DeleteAutoScalingGroup)
  + [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/DescribeAutoScalingGroups)
  + [DescribeAutoScalingInstances](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/DescribeAutoScalingInstances)
  + [DescribeScalingActivities](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/DescribeScalingActivities)
  + [DisableMetricsCollection](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/DisableMetricsCollection)
  + [EnableMetricsCollection](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/EnableMetricsCollection)
  + [SetDesiredCapacity](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/SetDesiredCapacity)
  + [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/TerminateInstanceInAutoScalingGroup)
  + [UpdateAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/UpdateAutoScalingGroup)

------
#### [ Kotlin ]

**SDK per Kotlin**  
 C'è dell'altro GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/autoscale#code-examples). 

```
suspend fun main(args: Array<String>) {
    val usage = """
    Usage:
        <groupName> <launchTemplateName> <serviceLinkedRoleARN> <vpcZoneId>

    Where:
        groupName - The name of the Auto Scaling group.
        launchTemplateName - The name of the launch template. 
        serviceLinkedRoleARN - The Amazon Resource Name (ARN) of the service-linked role that the Auto Scaling group uses.
        vpcZoneId - A subnet Id for a virtual private cloud (VPC) where instances in the Auto Scaling group can be created.
    """

    if (args.size != 4) {
        println(usage)
        exitProcess(1)
    }

    val groupName = args[0]
    val launchTemplateName = args[1]
    val serviceLinkedRoleARN = args[2]
    val vpcZoneId = args[3]

    println("**** Create an Auto Scaling group named $groupName")
    createAutoScalingGroup(groupName, launchTemplateName, serviceLinkedRoleARN, vpcZoneId)

    println("Wait 1 min for the resources, including the instance. Otherwise, an empty instance Id is returned")
    delay(60000)

    val instanceId = getSpecificAutoScaling(groupName)
    if (instanceId.compareTo("") == 0) {
        println("Error - no instance Id value")
        exitProcess(1)
    } else {
        println("The instance Id value is $instanceId")
    }

    println("**** Describe Auto Scaling with the Id value $instanceId")
    describeAutoScalingInstance(instanceId)

    println("**** Enable metrics collection $instanceId")
    enableMetricsCollection(groupName)

    println("**** Update an Auto Scaling group to maximum size of 3")
    updateAutoScalingGroup(groupName, launchTemplateName, serviceLinkedRoleARN)

    println("**** Describe all Auto Scaling groups to show the current state of the groups")
    describeAutoScalingGroups(groupName)

    println("**** Describe account details")
    describeAccountLimits()

    println("Wait 1 min for the resources, including the instance. Otherwise, an empty instance Id is returned")
    delay(60000)

    println("**** Set desired capacity to 2")
    setDesiredCapacity(groupName)

    println("**** Get the two instance Id values and state")
    getAutoScalingGroups(groupName)

    println("**** List the scaling activities that have occurred for the group")
    describeScalingActivities(groupName)

    println("**** Terminate an instance in the Auto Scaling group")
    terminateInstanceInAutoScalingGroup(instanceId)

    println("**** Stop the metrics collection")
    disableMetricsCollection(groupName)

    println("**** Delete the Auto Scaling group")
    deleteSpecificAutoScalingGroup(groupName)
}

suspend fun describeAutoScalingGroups(groupName: String) {
    val groupsReques =
        DescribeAutoScalingGroupsRequest {
            autoScalingGroupNames = listOf(groupName)
            maxRecords = 10
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        val response = autoScalingClient.describeAutoScalingGroups(groupsReques)
        response.autoScalingGroups?.forEach { group ->
            println("The service to use for the health checks: ${group.healthCheckType}")
        }
    }
}

suspend fun disableMetricsCollection(groupName: String) {
    val disableMetricsCollectionRequest =
        DisableMetricsCollectionRequest {
            autoScalingGroupName = groupName
            metrics = listOf("GroupMaxSize")
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        autoScalingClient.disableMetricsCollection(disableMetricsCollectionRequest)
        println("The disable metrics collection operation was successful")
    }
}

suspend fun describeScalingActivities(groupName: String?) {
    val scalingActivitiesRequest =
        DescribeScalingActivitiesRequest {
            autoScalingGroupName = groupName
            maxRecords = 10
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        val response = autoScalingClient.describeScalingActivities(scalingActivitiesRequest)
        response.activities?.forEach { activity ->
            println("The activity Id is ${activity.activityId}")
            println("The activity details are ${activity.details}")
        }
    }
}

suspend fun getAutoScalingGroups(groupName: String) {
    val scalingGroupsRequest =
        DescribeAutoScalingGroupsRequest {
            autoScalingGroupNames = listOf(groupName)
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        val response = autoScalingClient.describeAutoScalingGroups(scalingGroupsRequest)
        response.autoScalingGroups?.forEach { group ->
            println("The group name is ${group.autoScalingGroupName}")
            println("The group ARN is ${group.autoScalingGroupArn}")
            group.instances?.forEach { instance ->
                println("The instance id is ${instance.instanceId}")
                println("The lifecycle state is " + instance.lifecycleState)
            }
        }
    }
}

suspend fun setDesiredCapacity(groupName: String) {
    val capacityRequest =
        SetDesiredCapacityRequest {
            autoScalingGroupName = groupName
            desiredCapacity = 2
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        autoScalingClient.setDesiredCapacity(capacityRequest)
        println("You set the DesiredCapacity to 2")
    }
}

suspend fun updateAutoScalingGroup(
    groupName: String,
    launchTemplateNameVal: String,
    serviceLinkedRoleARNVal: String,
) {
    val templateSpecification =
        LaunchTemplateSpecification {
            launchTemplateName = launchTemplateNameVal
        }

    val groupRequest =
        UpdateAutoScalingGroupRequest {
            maxSize = 3
            serviceLinkedRoleArn = serviceLinkedRoleARNVal
            autoScalingGroupName = groupName
            launchTemplate = templateSpecification
        }

    val groupsRequestWaiter =
        DescribeAutoScalingGroupsRequest {
            autoScalingGroupNames = listOf(groupName)
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        autoScalingClient.updateAutoScalingGroup(groupRequest)
        autoScalingClient.waitUntilGroupExists(groupsRequestWaiter)
        println("You successfully updated the Auto Scaling group  $groupName")
    }
}

suspend fun createAutoScalingGroup(
    groupName: String,
    launchTemplateNameVal: String,
    serviceLinkedRoleARNVal: String,
    vpcZoneIdVal: String,
) {
    val templateSpecification =
        LaunchTemplateSpecification {
            launchTemplateName = launchTemplateNameVal
        }

    val request =
        CreateAutoScalingGroupRequest {
            autoScalingGroupName = groupName
            availabilityZones = listOf("us-east-1a")
            launchTemplate = templateSpecification
            maxSize = 1
            minSize = 1
            vpcZoneIdentifier = vpcZoneIdVal
            serviceLinkedRoleArn = serviceLinkedRoleARNVal
        }

    // This object is required for the waiter call.
    val groupsRequestWaiter =
        DescribeAutoScalingGroupsRequest {
            autoScalingGroupNames = listOf(groupName)
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        autoScalingClient.createAutoScalingGroup(request)
        autoScalingClient.waitUntilGroupExists(groupsRequestWaiter)
        println("$groupName was created!")
    }
}

suspend fun describeAutoScalingInstance(id: String) {
    val describeAutoScalingInstancesRequest =
        DescribeAutoScalingInstancesRequest {
            instanceIds = listOf(id)
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        val response = autoScalingClient.describeAutoScalingInstances(describeAutoScalingInstancesRequest)
        response.autoScalingInstances?.forEach { group ->
            println("The instance lifecycle state is: ${group.lifecycleState}")
        }
    }
}

suspend fun enableMetricsCollection(groupName: String?) {
    val collectionRequest =
        EnableMetricsCollectionRequest {
            autoScalingGroupName = groupName
            metrics = listOf("GroupMaxSize")
            granularity = "1Minute"
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        autoScalingClient.enableMetricsCollection(collectionRequest)
        println("The enable metrics collection operation was successful")
    }
}

suspend fun getSpecificAutoScaling(groupName: String): String {
    var instanceId = ""
    val scalingGroupsRequest =
        DescribeAutoScalingGroupsRequest {
            autoScalingGroupNames = listOf(groupName)
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        val response = autoScalingClient.describeAutoScalingGroups(scalingGroupsRequest)
        response.autoScalingGroups?.forEach { group ->
            println("The group name is ${group.autoScalingGroupName}")
            println("The group ARN is ${group.autoScalingGroupArn}")

            group.instances?.forEach { instance ->
                instanceId = instance.instanceId.toString()
            }
        }
    }
    return instanceId
}

suspend fun describeAccountLimits() {
    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        val response = autoScalingClient.describeAccountLimits(DescribeAccountLimitsRequest {})
        println("The max number of Auto Scaling groups is ${response.maxNumberOfAutoScalingGroups}")
        println("The current number of Auto Scaling groups is ${response.numberOfAutoScalingGroups}")
    }
}

suspend fun terminateInstanceInAutoScalingGroup(instanceIdVal: String) {
    val request =
        TerminateInstanceInAutoScalingGroupRequest {
            instanceId = instanceIdVal
            shouldDecrementDesiredCapacity = false
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        autoScalingClient.terminateInstanceInAutoScalingGroup(request)
        println("You have terminated instance $instanceIdVal")
    }
}

suspend fun deleteSpecificAutoScalingGroup(groupName: String) {
    val deleteAutoScalingGroupRequest =
        DeleteAutoScalingGroupRequest {
            autoScalingGroupName = groupName
            forceDelete = true
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        autoScalingClient.deleteAutoScalingGroup(deleteAutoScalingGroupRequest)
        println("You successfully deleted $groupName")
    }
}
```
+ Per informazioni dettagliate sull’API, consulta i seguenti argomenti nella *documentazione di riferimento dell’API AWS SDK per Kotlin*.
  + [CreateAutoScalingGroup](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [DeleteAutoScalingGroup](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [DescribeAutoScalingGroups](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [DescribeAutoScalingInstances](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [DescribeScalingActivities](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [DisableMetricsCollection](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [EnableMetricsCollection](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [SetDesiredCapacity](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [TerminateInstanceInAutoScalingGroup](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [UpdateAutoScalingGroup](https://sdk.amazonaws.com/kotlin/api/latest/index.html)

------
#### [ PHP ]

**SDK per PHP**  
 C'è dell'altro GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code/auto-scaling#code-examples). 

```
namespace AutoScaling;

use Aws\AutoScaling\AutoScalingClient;
use Aws\CloudWatch\CloudWatchClient;
use Aws\Ec2\Ec2Client;
use AwsUtilities\AWSServiceClass;
use AwsUtilities\RunnableExample;

class GettingStartedWithAutoScaling implements RunnableExample
{
    protected Ec2Client $ec2Client;
    protected AutoScalingClient $autoScalingClient;
    protected AutoScalingService $autoScalingService;
    protected CloudWatchClient $cloudWatchClient;
    protected string $templateName;
    protected string $autoScalingGroupName;
    protected array $role;

    public function runExample()
    {
        echo("\n");
        echo("--------------------------------------\n");
        print("Welcome to the Amazon EC2 Auto Scaling getting started demo using PHP!\n");
        echo("--------------------------------------\n");

        $clientArgs = [
            'region' => 'us-west-2',
            'version' => 'latest',
            'profile' => 'default',
        ];
        $uniqid = uniqid();

        $this->autoScalingClient = new AutoScalingClient($clientArgs);
        $this->autoScalingService = new AutoScalingService($this->autoScalingClient);
        $this->cloudWatchClient = new CloudWatchClient($clientArgs);

        AWSServiceClass::$waitTime = 5;
        AWSServiceClass::$maxWaitAttempts = 20;

        /**
         * Step 0: Create an EC2 launch template that you'll use to create an Auto Scaling group.
         */
        $this->ec2Client = new EC2Client($clientArgs);
        $this->templateName = "example_launch_template_$uniqid";
        $instanceType = "t1.micro";
        $amiId = "ami-0ca285d4c2cda3300";
        $launchTemplate = $this->ec2Client->createLaunchTemplate(
            [
            'LaunchTemplateName' => $this->templateName,
            'LaunchTemplateData' => [
                'InstanceType' => $instanceType,
                'ImageId' => $amiId,
            ]
            ]
        );

        /**
         * Step 1: CreateAutoScalingGroup: pass it the launch template you created in step 0.
         */
        $availabilityZones[] = $this->ec2Client->describeAvailabilityZones([])['AvailabilityZones'][1]['ZoneName'];

        $this->autoScalingGroupName = "demoAutoScalingGroupName_$uniqid";
        $minSize = 1;
        $maxSize = 1;
        $launchTemplateId = $launchTemplate['LaunchTemplate']['LaunchTemplateId'];
        $this->autoScalingService->createAutoScalingGroup(
            $this->autoScalingGroupName,
            $availabilityZones,
            $minSize,
            $maxSize,
            $launchTemplateId
        );

        $this->autoScalingService->waitUntilGroupInService([$this->autoScalingGroupName]);
        $autoScalingGroup = $this->autoScalingService->describeAutoScalingGroups([$this->autoScalingGroupName]);

        /**
         * Step 2: DescribeAutoScalingInstances: show that one instance has launched.
         */
        $instanceIds = [$autoScalingGroup['AutoScalingGroups'][0]['Instances'][0]['InstanceId']];
        $instances = $this->autoScalingService->describeAutoScalingInstances($instanceIds);
        echo "The Auto Scaling group {$this->autoScalingGroupName} was created successfully.\n";
        echo count($instances['AutoScalingInstances']) . " instances were created for the group.\n";
        echo $autoScalingGroup['AutoScalingGroups'][0]['MaxSize'] . " is the max number of instances for the group.\n";

        /**
         * Step 3: EnableMetricsCollection: enable all metrics or a subset.
         */
        $this->autoScalingService->enableMetricsCollection($this->autoScalingGroupName, "1Minute");

        /**
         * Step 4: UpdateAutoScalingGroup: update max size to 3.
         */
        echo "Updating the max number of instances to 3.\n";
        $this->autoScalingService->updateAutoScalingGroup($this->autoScalingGroupName, ['MaxSize' => 3]);

        /**
         * Step 5: DescribeAutoScalingGroups: show the current state of the group.
         */
        $autoScalingGroup = $this->autoScalingService->describeAutoScalingGroups([$this->autoScalingGroupName]);
        echo $autoScalingGroup['AutoScalingGroups'][0]['MaxSize'];
        echo " is the updated max number of instances for the group.\n";

        $limits = $this->autoScalingService->describeAccountLimits();
        echo "Here are your account limits:\n";
        echo "MaxNumberOfAutoScalingGroups: {$limits['MaxNumberOfAutoScalingGroups']}\n";
        echo "MaxNumberOfLaunchConfigurations: {$limits['MaxNumberOfLaunchConfigurations']}\n";
        echo "NumberOfAutoScalingGroups: {$limits['NumberOfAutoScalingGroups']}\n";
        echo "NumberOfLaunchConfigurations: {$limits['NumberOfLaunchConfigurations']}\n";

        /**
         * Step 6: SetDesiredCapacity: set desired capacity to 2.
         */
        $this->autoScalingService->setDesiredCapacity($this->autoScalingGroupName, 2);
        sleep(10); // Wait for the group to start processing the request.
        $this->autoScalingService->waitUntilGroupInService([$this->autoScalingGroupName]);

        /**
         * Step 7: DescribeAutoScalingInstances: show that two instances are launched.
         */
        $autoScalingGroups = $this->autoScalingService->describeAutoScalingGroups([$this->autoScalingGroupName]);
        foreach ($autoScalingGroups['AutoScalingGroups'] as $autoScalingGroup) {
            echo "There is a group named: {$autoScalingGroup['AutoScalingGroupName']}";
            echo "with an ARN of {$autoScalingGroup['AutoScalingGroupARN']}.\n";
            foreach ($autoScalingGroup['Instances'] as $instance) {
                echo "{$autoScalingGroup['AutoScalingGroupName']} has an instance with id of: ";
                echo "{$instance['InstanceId']} and a lifecycle state of: {$instance['LifecycleState']}.\n";
            }
        }

        /**
         * Step 8: TerminateInstanceInAutoScalingGroup: terminate one of the instances in the group.
         */
        $this->autoScalingService->terminateInstanceInAutoScalingGroup($instance['InstanceId'], false);
        do {
            sleep(10);
            $instances = $this->autoScalingService->describeAutoScalingInstances([$instance['InstanceId']]);
        } while (count($instances['AutoScalingInstances']) > 0);
        do {
            sleep(10);
            $autoScalingGroups = $this->autoScalingService->describeAutoScalingGroups([$this->autoScalingGroupName]);
            $instances = $autoScalingGroups['AutoScalingGroups'][0]['Instances'];
        } while (count($instances) < 2);
        $this->autoScalingService->waitUntilGroupInService([$this->autoScalingGroupName]);
        foreach ($autoScalingGroups['AutoScalingGroups'] as $autoScalingGroup) {
            echo "There is a group named: {$autoScalingGroup['AutoScalingGroupName']}";
            echo "with an ARN of {$autoScalingGroup['AutoScalingGroupARN']}.\n";
            foreach ($autoScalingGroup['Instances'] as $instance) {
                echo "{$autoScalingGroup['AutoScalingGroupName']} has an instance with id of: ";
                echo "{$instance['InstanceId']} and a lifecycle state of: {$instance['LifecycleState']}.\n";
            }
        }

        /**
         * Step 9: DescribeScalingActivities: list the scaling activities that have occurred for the group so far.
         */
        $activities = $this->autoScalingService->describeScalingActivities($autoScalingGroup['AutoScalingGroupName']);
        echo "We found " . count($activities['Activities']) . " activities.\n";
        foreach ($activities['Activities'] as $activity) {
            echo "{$activity['ActivityId']} - {$activity['StartTime']} - {$activity['Description']}\n";
        }

        /**
         * Step 10: Use the Amazon CloudWatch API to get and show some metrics collected for the group.
         */
        $metricsNamespace = 'AWS/AutoScaling';
        $metricsDimensions = [
            [
                'Name' => 'AutoScalingGroupName',
                'Value' => $autoScalingGroup['AutoScalingGroupName'],
            ],
        ];
        $metrics = $this->cloudWatchClient->listMetrics(
            [
            'Dimensions' => $metricsDimensions,
            'Namespace' => $metricsNamespace,
            ]
        );
        foreach ($metrics['Metrics'] as $metric) {
            $timespan = 5;
            if ($metric['MetricName'] != 'GroupTotalCapacity' && $metric['MetricName'] != 'GroupMaxSize') {
                continue;
            }
            echo "Over the last $timespan minutes, {$metric['MetricName']} recorded:\n";
            $stats = $this->cloudWatchClient->getMetricStatistics(
                [
                'Dimensions' => $metricsDimensions,
                'EndTime' => time(),
                'StartTime' => time() - (5 * 60),
                'MetricName' => $metric['MetricName'],
                'Namespace' => $metricsNamespace,
                'Period' => 60,
                'Statistics' => ['Sum'],
                ]
            );
            foreach ($stats['Datapoints'] as $stat) {
                echo "{$stat['Timestamp']}: {$stat['Sum']}\n";
            }
        }

        return $instances;
    }

    public function cleanUp()
    {
        /**
         * Step 11: DisableMetricsCollection: disable all metrics.
         */
        $this->autoScalingService->disableMetricsCollection($this->autoScalingGroupName);

        /**
         * Step 12: DeleteAutoScalingGroup: to delete the group you must stop all instances.
         * - UpdateAutoScalingGroup with MinSize=0
         * - TerminateInstanceInAutoScalingGroup for each instance,
         *     specify ShouldDecrementDesiredCapacity=True. Wait for instances to stop.
         * - Now you can delete the group.
         */
        $this->autoScalingService->updateAutoScalingGroup($this->autoScalingGroupName, ['MinSize' => 0]);
        $this->autoScalingService->terminateAllInstancesInAutoScalingGroup($this->autoScalingGroupName);
        $this->autoScalingService->waitUntilGroupInService([$this->autoScalingGroupName]);
        $this->autoScalingService->deleteAutoScalingGroup($this->autoScalingGroupName);

        /**
         * Step 13: Delete launch template.
         */
        $this->ec2Client->deleteLaunchTemplate(
            [
            'LaunchTemplateName' => $this->templateName,
            ]
        );
    }

    public function helloService()
    {
        $autoScalingClient = new AutoScalingClient([
            'region' => 'us-west-2',
            'version' => 'latest',
            'profile' => 'default',
        ]);

        $groups = $autoScalingClient->describeAutoScalingGroups([]);
        var_dump($groups);
    }
}
```
+ Per informazioni dettagliate sull'API, consulta i seguenti argomenti nella *documentazione di riferimento dell’API AWS SDK per PHP *.
  + [CreateAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/CreateAutoScalingGroup)
  + [DeleteAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/DeleteAutoScalingGroup)
  + [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/DescribeAutoScalingGroups)
  + [DescribeAutoScalingInstances](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/DescribeAutoScalingInstances)
  + [DescribeScalingActivities](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/DescribeScalingActivities)
  + [DisableMetricsCollection](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/DisableMetricsCollection)
  + [EnableMetricsCollection](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/EnableMetricsCollection)
  + [SetDesiredCapacity](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/SetDesiredCapacity)
  + [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/TerminateInstanceInAutoScalingGroup)
  + [UpdateAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/UpdateAutoScalingGroup)

------
#### [ Python ]

**SDK per Python (Boto3)**  
 C'è dell'altro GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/auto-scaling#code-examples). 
Esegui uno scenario interattivo al prompt dei comandi.  

```
def run_scenario(as_wrapper: AutoScalingWrapper, svc_helper: ServiceHelper) -> None:
    """
    Runs the scenario demonstrating the management of Auto Scaling groups and instances.

    :param as_wrapper: An instance of the AutoScalingWrapper that manages Auto Scaling groups.
    :param svc_helper: An instance of the ServiceHelper that interacts with AWS services.
    :return: None
    """
    logging.basicConfig(level=logging.INFO, format="%(levelname)s: %(message)s")

    logger.info("Starting the Amazon EC2 Auto Scaling demo.")

    print("-" * 88)
    print(
        "Welcome to the Amazon EC2 Auto Scaling demo for managing groups and instances."
    )
    print("-" * 88)

    print(
        "This example requires a launch template that specifies how to create "
        "EC2 instances. You can use an existing template or create a new one."
    )
    template_name = q.ask(
        "Enter the name of an existing launch template or press Enter to create a new one: "
    )
    template = None
    if template_name:
        template = svc_helper.get_template(template_name)
    if template is None:
        inst_type = "t1.micro"
        ami_id = "ami-0ca285d4c2cda3300"
        print("Let's create a launch template with the following specifications:")
        print(f"\tInstanceType: {inst_type}")
        print(f"\tAMI ID: {ami_id}")
        template_name = q.ask("Enter a name for the template: ", q.non_empty)
        template = svc_helper.create_template(template_name, inst_type, ami_id)
    print("-" * 88)

    print("Let's create an Auto Scaling group.")
    group_name = q.ask("Enter a name for the group: ", q.non_empty)
    zones = svc_helper.get_availability_zones()
    print("EC2 instances can be created in the following Availability Zones:")
    for index, zone in enumerate(zones):
        print(f"\t{index+1}. {zone}")
    print(f"\t{len(zones)+1}. All zones")
    zone_sel = q.ask(
        "Which zone do you want to use? ", q.is_int, q.in_range(1, len(zones) + 1)
    )
    group_zones = [zones[zone_sel - 1]] if zone_sel <= len(zones) else zones
    print(f"Creating group {group_name}...")
    as_wrapper.create_autoscaling_group(group_name, group_zones, template_name, 1, 1)
    wait(10)
    group = as_wrapper.describe_group(group_name)
    logger.info("Created Auto Scaling group %s.", group_name)
    print("Created group:")
    pp(group)
    print("Waiting for instance to start...")
    wait_for_group(group_name, as_wrapper)
    print("-" * 88)

    use_metrics = q.ask(
        "Do you want to collect metrics about Amazon EC2 Auto Scaling during this demo (y/n)? ",
        q.is_yesno,
    )
    if use_metrics:
        as_wrapper.enable_metrics(
            group_name,
            [
                "GroupMinSize",
                "GroupMaxSize",
                "GroupDesiredCapacity",
                "GroupInServiceInstances",
                "GroupTotalInstances",
            ],
        )
        logger.info("Enabled metrics for Auto Scaling group %s.", group_name)
        print(f"Metrics enabled for {group_name}.")
    print("-" * 88)

    print(f"Let's update the maximum number of instances in {group_name} from 1 to 3.")
    q.ask("Press Enter when you're ready.")
    as_wrapper.update_group(group_name, MaxSize=3)
    group = as_wrapper.describe_group(group_name)
    logger.info("Updated maximum size for group %s to 3.", group_name)
    print("The group still has one running instance, but can have up to three:")
    print_simplified_group(group)
    print("-" * 88)

    print(f"Let's update the desired capacity of {group_name} from 1 to 2.")
    q.ask("Press Enter when you're ready.")
    as_wrapper.set_desired_capacity(group_name, 2)
    wait(10)
    group = as_wrapper.describe_group(group_name)
    logger.info("Set desired capacity for group %s to 2.", group_name)
    print("Here's the current state of the group:")
    print_simplified_group(group)
    print("-" * 88)
    print("Waiting for the new instance to start...")
    instance_ids = wait_for_group(group_name, as_wrapper)
    print("-" * 88)

    print(f"Let's terminate one of the instances in {group_name}.")
    print("Because the desired capacity is 2, another instance will start.")
    print("The currently running instances are:")
    for index, inst_id in enumerate(instance_ids):
        print(f"\t{index+1}. {inst_id}")
    inst_sel = q.ask(
        "Which instance do you want to stop? ",
        q.is_int,
        q.in_range(1, len(instance_ids) + 1),
    )
    print(f"Stopping {instance_ids[inst_sel-1]}...")
    as_wrapper.terminate_instance(instance_ids[inst_sel - 1], False)
    wait(10)
    group = as_wrapper.describe_group(group_name)
    logger.info(
        "Terminated instance %s in group %s.", instance_ids[inst_sel - 1], group_name
    )
    print(f"Here's the state of {group_name}:")
    print_simplified_group(group)
    print("Waiting for the scaling activities to complete...")
    wait_for_group(group_name, as_wrapper)
    print("-" * 88)

    print(f"Let's get a report of scaling activities for {group_name}.")
    q.ask("Press Enter when you're ready.")
    activities = as_wrapper.describe_scaling_activities(group_name)
    logger.info(
        "Retrieved %d scaling activities for group %s.", len(activities), group_name
    )
    print(
        f"Found {len(activities)} activities.\n"
        f"Activities are ordered with the most recent one first:"
    )
    for act in activities:
        pp(act)
    print("-" * 88)

    if use_metrics:
        print("Let's look at CloudWatch metrics.")
        metric_namespace = "AWS/AutoScaling"
        metric_dimensions = [{"Name": "AutoScalingGroupName", "Value": group_name}]
        print(f"The following metrics are enabled for {group_name}:")
        done = False
        while not done:
            metrics = svc_helper.get_metrics(metric_namespace, metric_dimensions)
            for index, metric in enumerate(metrics):
                print(f"\t{index+1}. {metric.name}")
            print(f"\t{len(metrics)+1}. None")
            metric_sel = q.ask(
                "Which metric do you want to see? ",
                q.is_int,
                q.in_range(1, len(metrics) + 1),
            )
            if metric_sel < len(metrics) + 1:
                span = 5
                metric = metrics[metric_sel - 1]
                print(f"Over the last {span} minutes, {metric.name} recorded:")
                # CloudWatch metric times are in the UTC+0 time zone.
                now = datetime.now(timezone.utc)
                metric_data = svc_helper.get_metric_statistics(
                    metric_dimensions, metric, now - timedelta(minutes=span), now
                )
                pp(metric_data)
                if not q.ask("Do you want to see another metric (y/n)? ", q.is_yesno):
                    done = True
            else:
                done = True

    print(f"Let's clean up.")
    q.ask("Press Enter when you're ready.")
    if use_metrics:
        print(f"Stopping metrics collection for {group_name}.")
        as_wrapper.disable_metrics(group_name)
        logger.info("Disabled metrics collection for group %s.", group_name)

    print(
        "You must terminate all instances in the group before you can delete the group."
    )
    print("Set minimum size to 0.")
    as_wrapper.update_group(group_name, MinSize=0)
    group = as_wrapper.describe_group(group_name)
    instance_ids = [inst["InstanceId"] for inst in group["Instances"]]
    for inst_id in instance_ids:
        print(f"Stopping {inst_id}.")
        as_wrapper.terminate_instance(inst_id, True)
        logger.info("Terminated instance %s in group %s.", inst_id, group_name)
    print("Waiting for instances to stop...")
    wait_for_instances(instance_ids, as_wrapper)
    print(f"Deleting {group_name}.")
    as_wrapper.delete_autoscaling_group(group_name)
    logger.info("Deleted Auto Scaling group %s.", group_name)
    print("-" * 88)

    if template is not None:
        if q.ask(
            f"Do you want to delete launch template {template_name} used in this demo (y/n)? "
        ):
            svc_helper.delete_template(template_name)
            logger.info("Deleted launch template %s.", template_name)
            print("Template deleted.")

    print("\nThanks for watching!")
    print("-" * 88)


if __name__ == "__main__":
    try:
        wrapper = AutoScalingWrapper(boto3.client("autoscaling"))
        helper = ServiceHelper(boto3.client("ec2"), boto3.resource("cloudwatch"))
        run_scenario(wrapper, helper)
    except Exception:
        logger.exception("Something went wrong with the demo!")
```
Definisci le funzioni chiamate dallo scenario per gestire i modelli e le metriche di avvio. Queste funzioni racchiudono Amazon EC2 e CloudWatch azioni.  

```
class ServiceHelper:
    """Encapsulates Amazon EC2 and CloudWatch actions for the example."""

    def __init__(self, ec2_client, cloudwatch_resource):
        """
        :param ec2_client: A Boto3 Amazon EC2 client.
        :param cloudwatch_resource: A Boto3 CloudWatch resource.
        """
        self.ec2_client = ec2_client
        self.cloudwatch_resource = cloudwatch_resource

    def get_template(self, template_name: str) -> dict:
        """
        Gets a launch template. Launch templates specify configuration for instances
        that are launched by Amazon EC2 Auto Scaling.

        :param template_name: The name of the template to look up.
        :return: The template, if it exists.
        :raises ClientError: If there is an error retrieving the launch template.
        """
        try:
            response = self.ec2_client.describe_launch_templates(
                LaunchTemplateNames=[template_name]
            )
            template = response["LaunchTemplates"][0]
            logger.info("Launch template %s retrieved successfully.", template_name)
            return template
        except ClientError as err:
            if (
                err.response["Error"]["Code"]
                == "InvalidLaunchTemplateName.NotFoundException"
            ):
                logger.warning("Launch template %s does not exist.", template_name)
            else:
                logger.error(
                    "Couldn't verify launch template %s. Error: %s: %s",
                    template_name,
                    err.response["Error"]["Code"],
                    err.response["Error"]["Message"],
                )
                raise

    def create_template(self, template_name: str, inst_type: str, ami_id: str) -> dict:
        """
        Creates an Amazon EC2 launch template to use with Amazon EC2 Auto Scaling.

        :param template_name: The name to give to the template.
        :param inst_type: The type of the instance, such as t1.micro.
        :param ami_id: The ID of the Amazon Machine Image (AMI) to use when creating
                       an instance.
        :return: Information about the newly created template.
        :raises ClientError: If there is an error creating the launch template.
        """
        try:
            response = self.ec2_client.create_launch_template(
                LaunchTemplateName=template_name,
                LaunchTemplateData={"InstanceType": inst_type, "ImageId": ami_id},
            )
            template = response["LaunchTemplate"]
            logger.info(
                "Created launch template %s with instance type %s and AMI ID %s.",
                template_name,
                inst_type,
                ami_id,
            )
            return template
        except ClientError as err:
            logger.error(
                "Couldn't create launch template %s. Error: %s: %s",
                template_name,
                err.response["Error"]["Code"],
                err.response["Error"]["Message"],
            )
            raise

    def delete_template(self, template_name: str) -> None:
        """
        Deletes a launch template.

        :param template_name: The name of the template to delete.
        :raises ClientError: If there is an error deleting the launch template.
        """
        try:
            self.ec2_client.delete_launch_template(LaunchTemplateName=template_name)
            logger.info("Deleted launch template %s.", template_name)
        except ClientError as err:
            logger.error(
                "Couldn't delete launch template %s. Error: %s: %s",
                template_name,
                err.response["Error"]["Code"],
                err.response["Error"]["Message"],
            )
            raise

    def get_availability_zones(self) -> list:
        """
        Gets a list of Availability Zones in the AWS Region of the Amazon EC2 client.

        :return: The list of Availability Zones for the client Region.
        :raises ClientError: If there is an error retrieving availability zones.
        """
        try:
            response = self.ec2_client.describe_availability_zones()
            zones = [zone["ZoneName"] for zone in response["AvailabilityZones"]]
            logger.info("Retrieved availability zones: %s.", ", ".join(zones))
            return zones
        except ClientError as err:
            logger.error(
                "Couldn't get availability zones. Error: %s: %s",
                err.response["Error"]["Code"],
                err.response["Error"]["Message"],
            )
            raise

    def get_metrics(self, namespace: str, dimensions: list) -> list:
        """
        Gets a list of CloudWatch metrics filtered by namespace and dimensions.

        :param namespace: The namespace of the metrics to look up.
        :param dimensions: The dimensions of the metrics to look up.
        :return: The list of metrics.
        :raises ClientError: If there is an error retrieving CloudWatch metrics.
        """
        try:
            metrics = list(
                self.cloudwatch_resource.metrics.filter(
                    Namespace=namespace, Dimensions=dimensions
                )
            )
            logger.info(
                "Retrieved metrics for namespace %s with dimensions %s.",
                namespace,
                dimensions,
            )
            return metrics
        except ClientError as err:
            logger.error(
                "Couldn't get metrics for %s, %s. Error: %s: %s",
                namespace,
                dimensions,
                err.response["Error"]["Code"],
                err.response["Error"]["Message"],
            )
            raise

    @staticmethod
    def get_metric_statistics(
        dimensions: list, metric, start: datetime, end: datetime
    ) -> list:
        """
        Gets statistics for a CloudWatch metric within a specified time span.

        :param dimensions: The dimensions of the metric.
        :param metric: The metric to look up.
        :param start: The start of the time span for retrieved metrics.
        :param end: The end of the time span for retrieved metrics.
        :return: The list of data points found for the specified metric.
        :raises ClientError: If there is an error retrieving metric statistics.
        """
        try:
            response = metric.get_statistics(
                Dimensions=dimensions,
                StartTime=start,
                EndTime=end,
                Period=60,
                Statistics=["Sum"],
            )
            data = response["Datapoints"]
            logger.info("Retrieved statistics for metric %s.", metric.name)
            return data
        except ClientError as err:
            logger.error(
                "Couldn't get statistics for metric %s. Error: %s: %s",
                metric.name,
                err.response["Error"]["Code"],
                err.response["Error"]["Message"],
            )
            raise


def print_simplified_group(group: dict) -> None:
    """
    Prints a subset of data for an Auto Scaling group.

    :param group: The Auto Scaling group data to print.
    :return: None
    """
    print(group["AutoScalingGroupName"])
    print(f"\tLaunch template: {group['LaunchTemplate']['LaunchTemplateName']}")
    print(
        f"\tMin: {group['MinSize']}, Max: {group['MaxSize']}, Desired: {group['DesiredCapacity']}"
    )
    if group["Instances"]:
        print(f"\tInstances:")
        for inst in group["Instances"]:
            print(f"\t\t{inst['InstanceId']}: {inst['LifecycleState']}")


def wait_for_group(group_name: str, as_wrapper: AutoScalingWrapper) -> list:
    """
    Waits for instances to start or stop in an Auto Scaling group.
    Prints the data for each instance after scaling activities are complete.

    :param group_name: The name of the Auto Scaling group.
    :param as_wrapper: The AutoScalingWrapper that manages Auto Scaling groups.
    :return: A list of instance IDs in the group.
    """
    group = as_wrapper.describe_group(group_name)
    instance_ids = [i["InstanceId"] for i in group["Instances"]]
    return wait_for_instances(instance_ids, as_wrapper)


def wait_for_instances(instance_ids: list, as_wrapper: AutoScalingWrapper) -> list:
    """
    Waits for instances to start or stop in an Auto Scaling group.
    Prints the data for each instance after scaling activities are complete.

    :param instance_ids: A list of instance IDs to wait for.
    :param as_wrapper: The AutoScalingWrapper that manages Auto Scaling groups.
    :return: A list of instance IDs that were waited on.
    """
    ready = False
    instances = []
    while not ready:
        instances = as_wrapper.describe_instances(instance_ids) if instance_ids else []
        if all([x["LifecycleState"] in ["Terminated", "InService"] for x in instances]):
            ready = True
        else:
            wait(10)
    if instances:
        print(
            f"Here are the details of the instance{'s' if len(instances) > 1 else ''}:"
        )
        for instance in instances:
            pp(instance)
    return instance_ids
```
+ Per informazioni dettagliate sull’API, consulta i seguenti argomenti nella *documentazione di riferimento dell’API AWS SDK per Python (Boto3)*.
  + [CreateAutoScalingGroup](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/CreateAutoScalingGroup)
  + [DeleteAutoScalingGroup](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/DeleteAutoScalingGroup)
  + [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/DescribeAutoScalingGroups)
  + [DescribeAutoScalingInstances](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/DescribeAutoScalingInstances)
  + [DescribeScalingActivities](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/DescribeScalingActivities)
  + [DisableMetricsCollection](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/DisableMetricsCollection)
  + [EnableMetricsCollection](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/EnableMetricsCollection)
  + [SetDesiredCapacity](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/SetDesiredCapacity)
  + [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/TerminateInstanceInAutoScalingGroup)
  + [UpdateAutoScalingGroup](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/UpdateAutoScalingGroup)

------
#### [ Rust ]

**SDK per Rust**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/rustv1/examples/auto-scaling#code-examples). 

```
[package]
name = "autoscaling-code-examples"
version = "0.1.0"
authors = ["Doug Schwartz <dougsch@amazon.com>", "David Souther <dpsouth@amazon.com>"]
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
aws-config = { version = "1.0.1", features = ["behavior-version-latest"] }
aws-sdk-autoscaling = { version = "1.3.0" }
aws-sdk-ec2 = { version = "1.3.0" }
aws-types = { version = "1.0.1" }
tokio = { version = "1.20.1", features = ["full"] }
clap = { version = "4.4", features = ["derive"] }
tracing-subscriber = { version = "0.3.15", features = ["env-filter"] }
anyhow = "1.0.75"
tracing = "0.1.37"
tokio-stream = "0.1.14"


use std::{collections::BTreeSet, fmt::Display};

use anyhow::anyhow;
use autoscaling_code_examples::scenario::{AutoScalingScenario, ScenarioError};
use tracing::{info, warn};

async fn show_scenario_description(scenario: &AutoScalingScenario, event: &str) {
    let description = scenario.describe_scenario().await;
    info!("DescribeAutoScalingInstances: {event}\n{description}");
}

#[derive(Default, Debug)]
struct Warnings(Vec<String>);

impl Warnings {
    pub fn push(&mut self, warning: &str, error: ScenarioError) {
        let formatted = format!("{warning}: {error}");
        warn!("{formatted}");
        self.0.push(formatted);
    }

    pub fn is_empty(&self) -> bool {
        self.0.is_empty()
    }
}

impl Display for Warnings {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        writeln!(f, "Warnings:")?;
        for warning in &self.0 {
            writeln!(f, "{: >4}- {warning}", "")?;
        }
        Ok(())
    }
}

#[tokio::main]
async fn main() -> Result<(), anyhow::Error> {
    tracing_subscriber::fmt::init();

    let shared_config = aws_config::from_env().load().await;

    let mut warnings = Warnings::default();

    // 1. Create an EC2 launch template that you'll use to create an auto scaling group. Bonus: use SDK with EC2.CreateLaunchTemplate to create the launch template.
    // 2. CreateAutoScalingGroup: pass it the launch template you created in step 0. Give it min/max of 1 instance.
    // 4. EnableMetricsCollection: enable all metrics or a subset.
    let scenario = match AutoScalingScenario::prepare_scenario(&shared_config).await {
        Ok(scenario) => scenario,
        Err(errs) => {
            let err_str = errs
                .into_iter()
                .map(|e| e.to_string())
                .collect::<Vec<String>>()
                .join(", ");
            return Err(anyhow!("Failed to initialize scenario: {err_str}"));
        }
    };

    info!("Prepared autoscaling scenario:\n{scenario}");

    let stable = scenario.wait_for_stable(1).await;
    if let Err(err) = stable {
        warnings.push(
            "There was a problem while waiting for group to be stable",
            err,
        );
    }

    // 3. DescribeAutoScalingInstances: show that one instance has launched.
    show_scenario_description(
        &scenario,
        "show that the group was created and one instance has launched",
    )
    .await;

    // 5. UpdateAutoScalingGroup: update max size to 3.
    let scale_max_size = scenario.scale_max_size(3).await;
    if let Err(err) = scale_max_size {
        warnings.push("There was a problem scaling max size", err);
    }

    // 6. DescribeAutoScalingGroups: the current state of the group
    show_scenario_description(
        &scenario,
        "show the current state of the group after setting max size",
    )
    .await;

    // 7. SetDesiredCapacity: set desired capacity to 2.
    let scale_desired_capacity = scenario.scale_desired_capacity(2).await;
    if let Err(err) = scale_desired_capacity {
        warnings.push("There was a problem setting desired capacity", err);
    }

    //   Wait for a second instance to launch.
    let stable = scenario.wait_for_stable(2).await;
    if let Err(err) = stable {
        warnings.push(
            "There was a problem while waiting for group to be stable",
            err,
        );
    }

    // 8. DescribeAutoScalingInstances: show that two instances are launched.
    show_scenario_description(
        &scenario,
        "show that two instances are launched after setting desired capacity",
    )
    .await;

    let ids_before = scenario
        .list_instances()
        .await
        .map(|v| v.into_iter().collect::<BTreeSet<_>>())
        .unwrap_or_default();

    // 9. TerminateInstanceInAutoScalingGroup: terminate one of the instances in the group.
    let terminate_some_instance = scenario.terminate_some_instance().await;
    if let Err(err) = terminate_some_instance {
        warnings.push("There was a problem replacing an instance", err);
    }

    let wait_after_terminate = scenario.wait_for_stable(1).await;
    if let Err(err) = wait_after_terminate {
        warnings.push(
            "There was a problem waiting after terminating an instance",
            err,
        );
    }

    let wait_scale_up_after_terminate = scenario.wait_for_stable(2).await;
    if let Err(err) = wait_scale_up_after_terminate {
        warnings.push(
            "There was a problem waiting for scale up after terminating an instance",
            err,
        );
    }

    let ids_after = scenario
        .list_instances()
        .await
        .map(|v| v.into_iter().collect::<BTreeSet<_>>())
        .unwrap_or_default();

    let difference = ids_after.intersection(&ids_before).count();
    if !(difference == 1 && ids_before.len() == 2 && ids_after.len() == 2) {
        warnings.push(
            "Before and after set not different",
            ScenarioError::with(format!("{difference}")),
        );
    }

    // 10. DescribeScalingActivities: list the scaling activities that have occurred for the group so far.
    show_scenario_description(
        &scenario,
        "list the scaling activities that have occurred for the group so far",
    )
    .await;

    // 11. DisableMetricsCollection
    let scale_group = scenario.scale_group_to_zero().await;
    if let Err(err) = scale_group {
        warnings.push("There was a problem scaling the group to 0", err);
    }
    show_scenario_description(&scenario, "Scenario scaled to 0").await;

    // 12. DeleteAutoScalingGroup (to delete the group you must stop all instances):
    // 13. Delete LaunchTemplate.
    let clean_scenario = scenario.clean_scenario().await;
    if let Err(errs) = clean_scenario {
        for err in errs {
            warnings.push("There was a problem cleaning the scenario", err);
        }
    } else {
        info!("The scenario has been cleaned up!");
    }

    if warnings.is_empty() {
        Ok(())
    } else {
        Err(anyhow!(
            "There were warnings during scenario execution:\n{warnings}"
        ))
    }
}

pub mod scenario;


use std::{
    error::Error,
    fmt::{Debug, Display},
    time::{Duration, SystemTime},
};

use anyhow::anyhow;
use aws_config::SdkConfig;
use aws_sdk_autoscaling::{
    error::{DisplayErrorContext, ProvideErrorMetadata},
    types::{Activity, AutoScalingGroup, LaunchTemplateSpecification},
};
use aws_sdk_ec2::types::RequestLaunchTemplateData;
use tracing::trace;

const LAUNCH_TEMPLATE_NAME: &str = "SDK_Code_Examples_EC2_Autoscaling_template_from_Rust_SDK";
const AUTOSCALING_GROUP_NAME: &str = "SDK_Code_Examples_EC2_Autoscaling_Group_from_Rust_SDK";
const MAX_WAIT: Duration = Duration::from_secs(5 * 60); // Wait at most 25 seconds.
const WAIT_TIME: Duration = Duration::from_millis(500); // Wait half a second at a time.

struct Waiter {
    start: SystemTime,
    max: Duration,
}

impl Waiter {
    fn new() -> Self {
        Waiter {
            start: SystemTime::now(),
            max: MAX_WAIT,
        }
    }

    async fn sleep(&self) -> Result<(), ScenarioError> {
        if SystemTime::now()
            .duration_since(self.start)
            .unwrap_or(Duration::MAX)
            > self.max
        {
            Err(ScenarioError::with(
                "Exceeded maximum wait duration for stable group",
            ))
        } else {
            tokio::time::sleep(WAIT_TIME).await;
            Ok(())
        }
    }
}

pub struct AutoScalingScenario {
    ec2: aws_sdk_ec2::Client,
    autoscaling: aws_sdk_autoscaling::Client,
    launch_template_arn: String,
    auto_scaling_group_name: String,
}

impl Display for AutoScalingScenario {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        f.write_fmt(format_args!(
            "\tLaunch Template ID: {}\n",
            self.launch_template_arn
        ))?;
        f.write_fmt(format_args!(
            "\tScaling Group Name: {}\n",
            self.auto_scaling_group_name
        ))?;

        Ok(())
    }
}

pub struct AutoScalingScenarioDescription {
    group: Result<Vec<String>, ScenarioError>,
    instances: Result<Vec<String>, anyhow::Error>,
    activities: Result<Vec<Activity>, anyhow::Error>,
}

impl Display for AutoScalingScenarioDescription {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        writeln!(f, "\t      Group status:")?;
        match &self.group {
            Ok(groups) => {
                for status in groups {
                    writeln!(f, "\t\t- {status}")?;
                }
            }
            Err(e) => writeln!(f, "\t\t! - {e}")?,
        }
        writeln!(f, "\t         Instances:")?;
        match &self.instances {
            Ok(instances) => {
                for instance in instances {
                    writeln!(f, "\t\t- {instance}")?;
                }
            }
            Err(e) => writeln!(f, "\t\t! {e}")?,
        }

        writeln!(f, "\t        Activities:")?;
        match &self.activities {
            Ok(activities) => {
                for activity in activities {
                    writeln!(
                        f,
                        "\t\t- {} Progress: {}% Status: {:?} End: {:?}",
                        activity.cause().unwrap_or("Unknown"),
                        activity.progress.unwrap_or(-1),
                        activity.status_code(),
                        // activity.status_message().unwrap_or_default()
                        activity.end_time(),
                    )?;
                }
            }
            Err(e) => writeln!(f, "\t\t! {e}")?,
        }

        Ok(())
    }
}

#[derive(Debug)]
struct MetadataError {
    message: Option<String>,
    code: Option<String>,
}

impl MetadataError {
    fn from(err: &dyn ProvideErrorMetadata) -> Self {
        MetadataError {
            message: err.message().map(|s| s.to_string()),
            code: err.code().map(|s| s.to_string()),
        }
    }
}

impl Display for MetadataError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        let display = match (&self.message, &self.code) {
            (None, None) => "Unknown".to_string(),
            (None, Some(code)) => format!("({code})"),
            (Some(message), None) => message.to_string(),
            (Some(message), Some(code)) => format!("{message} ({code})"),
        };
        write!(f, "{display}")
    }
}

#[derive(Debug)]
pub struct ScenarioError {
    message: String,
    context: Option<MetadataError>,
}

impl ScenarioError {
    pub fn with(message: impl Into<String>) -> Self {
        ScenarioError {
            message: message.into(),
            context: None,
        }
    }

    pub fn new(message: impl Into<String>, err: &dyn ProvideErrorMetadata) -> Self {
        ScenarioError {
            message: message.into(),
            context: Some(MetadataError::from(err)),
        }
    }
}

impl Error for ScenarioError {
    // While `Error` can capture `source` information about the underlying error, for this example
    // the ScenarioError captures the underlying information in MetadataError and treats it as a
    // single Error from this Crate. In other contexts, it may be appropriate to model the error
    // as including the SdkError as its source.
}
impl Display for ScenarioError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match &self.context {
            Some(c) => write!(f, "{}: {}", self.message, c),
            None => write!(f, "{}", self.message),
        }
    }
}

impl AutoScalingScenario {
    pub async fn prepare_scenario(sdk_config: &SdkConfig) -> Result<Self, Vec<ScenarioError>> {
        let ec2 = aws_sdk_ec2::Client::new(sdk_config);
        let autoscaling = aws_sdk_autoscaling::Client::new(sdk_config);

        let auto_scaling_group_name = String::from(AUTOSCALING_GROUP_NAME);

        // Before creating any resources, prepare the list of AZs
        let availablity_zones = ec2.describe_availability_zones().send().await;
        if let Err(err) = availablity_zones {
            return Err(vec![ScenarioError::new("Failed to find AZs", &err)]);
        }

        let availability_zones: Vec<String> = availablity_zones
            .unwrap()
            .availability_zones
            .unwrap_or_default()
            .iter()
            .take(3)
            .map(|z| z.zone_name.clone().unwrap())
            .collect();

        // 1. Create an EC2 launch template that you'll use to create an auto scaling group. Bonus: use SDK with EC2.CreateLaunchTemplate to create the launch template.
        //   * Recommended: InstanceType='t1.micro', ImageId='ami-0ca285d4c2cda3300'
        let create_launch_template = ec2
            .create_launch_template()
            .launch_template_name(LAUNCH_TEMPLATE_NAME)
            .launch_template_data(
                RequestLaunchTemplateData::builder()
                    .instance_type(aws_sdk_ec2::types::InstanceType::T1Micro)
                    .image_id("ami-0ca285d4c2cda3300")
                    .build(),
            )
            .send()
            .await
            .map_err(|err| vec![ScenarioError::new("Failed to create launch template", &err)])?;

        let launch_template_arn = match create_launch_template.launch_template {
            Some(launch_template) => launch_template.launch_template_id.unwrap_or_default(),
            None => {
                // Try to delete the launch template
                let _ = ec2
                    .delete_launch_template()
                    .launch_template_name(LAUNCH_TEMPLATE_NAME)
                    .send()
                    .await;
                return Err(vec![ScenarioError::with("Failed to load launch template")]);
            }
        };

        // 2. CreateAutoScalingGroup: pass it the launch template you created in step 0. Give it min/max of 1 instance.
        //   You can use EC2.describe_availability_zones() to get a list of AZs (you have to specify an AZ when you create the group).
        //   Wait for instance to launch. Use a waiter if you have one, otherwise DescribeAutoScalingInstances until LifecycleState='InService'
        if let Err(err) = autoscaling
            .create_auto_scaling_group()
            .auto_scaling_group_name(auto_scaling_group_name.as_str())
            .launch_template(
                LaunchTemplateSpecification::builder()
                    .launch_template_id(launch_template_arn.clone())
                    .version("$Latest")
                    .build(),
            )
            .max_size(1)
            .min_size(1)
            .set_availability_zones(Some(availability_zones))
            .send()
            .await
        {
            let mut errs = vec![ScenarioError::new(
                "Failed to create autoscaling group",
                &err,
            )];

            if let Err(err) = autoscaling
                .delete_auto_scaling_group()
                .auto_scaling_group_name(auto_scaling_group_name.as_str())
                .send()
                .await
            {
                errs.push(ScenarioError::new(
                    "Failed to clean up autoscaling group",
                    &err,
                ));
            }

            if let Err(err) = ec2
                .delete_launch_template()
                .launch_template_id(launch_template_arn.clone())
                .send()
                .await
            {
                errs.push(ScenarioError::new(
                    "Failed to clean up launch template",
                    &err,
                ));
            }
            return Err(errs);
        }

        let scenario = AutoScalingScenario {
            ec2,
            autoscaling: autoscaling.clone(), // Clients are cheap so cloning here to prevent a move is ok.
            auto_scaling_group_name: auto_scaling_group_name.clone(),
            launch_template_arn,
        };

        let enable_metrics_collection = autoscaling
            .enable_metrics_collection()
            .auto_scaling_group_name(auto_scaling_group_name.as_str())
            .granularity("1Minute")
            .set_metrics(Some(vec![
                String::from("GroupMinSize"),
                String::from("GroupMaxSize"),
                String::from("GroupDesiredCapacity"),
                String::from("GroupInServiceInstances"),
                String::from("GroupTotalInstances"),
            ]))
            .send()
            .await;

        match enable_metrics_collection {
            Ok(_) => Ok(scenario),
            Err(err) => {
                scenario.clean_scenario().await?;
                Err(vec![ScenarioError::new(
                    "Failed to enable metrics collections for group",
                    &err,
                )])
            }
        }
    }

    pub async fn clean_scenario(self) -> Result<(), Vec<ScenarioError>> {
        let _ = self.wait_for_no_scaling().await;
        let delete_group = self
            .autoscaling
            .delete_auto_scaling_group()
            .auto_scaling_group_name(self.auto_scaling_group_name.clone())
            .send()
            .await;

        // 14. Delete LaunchTemplate.
        let delete_launch_template = self
            .ec2
            .delete_launch_template()
            .launch_template_id(self.launch_template_arn.clone())
            .send()
            .await;

        let early_exit = match (delete_group, delete_launch_template) {
            (Ok(_), Ok(_)) => Ok(()),
            (Ok(_), Err(e)) => Err(vec![ScenarioError::new(
                "There was an error cleaning the launch template",
                &e,
            )]),
            (Err(e), Ok(_)) => Err(vec![ScenarioError::new(
                "There was an error cleaning the scale group",
                &e,
            )]),
            (Err(e1), Err(e2)) => Err(vec![
                ScenarioError::new("Multiple error cleaning the scenario Scale Group", &e1),
                ScenarioError::new("Multiple error cleaning the scenario Launch Template", &e2),
            ]),
        };

        if early_exit.is_err() {
            early_exit
        } else {
            // Wait for delete_group to finish
            let waiter = Waiter::new();
            let mut errors = Vec::<ScenarioError>::new();
            while errors.len() < 3 {
                if let Err(e) = waiter.sleep().await {
                    errors.push(e);
                    continue;
                }
                let describe_group = self
                    .autoscaling
                    .describe_auto_scaling_groups()
                    .auto_scaling_group_names(self.auto_scaling_group_name.clone())
                    .send()
                    .await;
                match describe_group {
                    Ok(group) => match group.auto_scaling_groups().first() {
                        Some(group) => {
                            if group.status() != Some("Delete in progress") {
                                errors.push(ScenarioError::with(format!(
                                    "Group in an unknown state while deleting: {}",
                                    group.status().unwrap_or("unknown error")
                                )));
                                return Err(errors);
                            }
                        }
                        None => return Ok(()),
                    },
                    Err(err) => {
                        errors.push(ScenarioError::new("Failed to describe autoscaling group during cleanup 3 times, last error", &err));
                    }
                }
                if errors.len() > 3 {
                    return Err(errors);
                }
            }
            Err(vec![ScenarioError::with(
                "Exited cleanup wait loop without retuning success or failing after three rounds",
            )])
        }
    }

    pub async fn describe_scenario(&self) -> AutoScalingScenarioDescription {
        let group = self
            .autoscaling
            .describe_auto_scaling_groups()
            .auto_scaling_group_names(self.auto_scaling_group_name.clone())
            .send()
            .await
            .map(|s| {
                s.auto_scaling_groups()
                    .iter()
                    .map(|s| {
                        format!(
                            "{}: {}",
                            s.auto_scaling_group_name().unwrap_or("Unknown"),
                            s.status().unwrap_or("Unknown")
                        )
                    })
                    .collect::<Vec<String>>()
            })
            .map_err(|e| {
                ScenarioError::new("Failed to describe auto scaling groups for scenario", &e)
            });

        let instances = self
            .list_instances()
            .await
            .map_err(|e| anyhow!("There was an error listing instances: {e}",));

        // 10. DescribeScalingActivities: list the scaling activities that have occurred for the group so far.
        //   Bonus: use CloudWatch API to get and show some metrics collected for the group.
        //   CW.ListMetrics with Namespace='AWS/AutoScaling' and Dimensions=[{'Name': 'AutoScalingGroupName', 'Value': }]
        //   CW.GetMetricStatistics with Statistics='Sum'. Start and End times must be in UTC!
        let activities = self
            .autoscaling
            .describe_scaling_activities()
            .auto_scaling_group_name(self.auto_scaling_group_name.clone())
            .into_paginator()
            .items()
            .send()
            .collect::<Result<Vec<_>, _>>()
            .await
            .map_err(|e| {
                anyhow!(
                    "There was an error retrieving scaling activities: {}",
                    DisplayErrorContext(&e)
                )
            });

        AutoScalingScenarioDescription {
            group,
            instances,
            activities,
        }
    }

    async fn get_group(&self) -> Result<AutoScalingGroup, ScenarioError> {
        let describe_auto_scaling_groups = self
            .autoscaling
            .describe_auto_scaling_groups()
            .auto_scaling_group_names(self.auto_scaling_group_name.clone())
            .send()
            .await;

        if let Err(err) = describe_auto_scaling_groups {
            return Err(ScenarioError::new(
                format!(
                    "Failed to get status of autoscaling group {}",
                    self.auto_scaling_group_name.clone()
                )
                .as_str(),
                &err,
            ));
        }

        let describe_auto_scaling_groups_output = describe_auto_scaling_groups.unwrap();
        let auto_scaling_groups = describe_auto_scaling_groups_output.auto_scaling_groups();
        let auto_scaling_group = auto_scaling_groups.first();

        if auto_scaling_group.is_none() {
            return Err(ScenarioError::with(format!(
                "Could not find autoscaling group {}",
                self.auto_scaling_group_name.clone()
            )));
        }

        Ok(auto_scaling_group.unwrap().clone())
    }

    pub async fn wait_for_no_scaling(&self) -> Result<(), ScenarioError> {
        let waiter = Waiter::new();
        let mut scaling = true;
        while scaling {
            waiter.sleep().await?;
            let describe_activities = self
                .autoscaling
                .describe_scaling_activities()
                .auto_scaling_group_name(self.auto_scaling_group_name.clone())
                .send()
                .await
                .map_err(|e| {
                    ScenarioError::new("Failed to get autoscaling activities for group", &e)
                })?;
            let activities = describe_activities.activities();
            trace!(
                "Waiting for no scaling found {} activities",
                activities.len()
            );
            scaling = activities.iter().any(|a| a.progress() < Some(100));
        }
        Ok(())
    }

    pub async fn wait_for_stable(&self, size: usize) -> Result<(), ScenarioError> {
        self.wait_for_no_scaling().await?;

        let mut group = self.get_group().await?;
        let mut count = count_group_instances(&group);

        let waiter = Waiter::new();
        while count != size {
            trace!("Waiting for stable {size} (current: {count})");
            waiter.sleep().await?;
            group = self.get_group().await?;
            count = count_group_instances(&group);
        }

        Ok(())
    }

    pub async fn list_instances(&self) -> Result<Vec<String>, ScenarioError> {
        // The direct way to list instances is by using DescribeAutoScalingGroup's instances property. However, this returns a Vec<Instance>, as opposed to a Vec<AutoScalingInstanceDetails>.
        // Ok(self.get_group().await?.instances.unwrap_or_default().map(|i| i.instance_id.clone().unwrap_or_default()).filter(|id| !id.is_empty()).collect())

        // Alternatively, and for the sake of example, DescribeAutoScalingInstances returns a list that can be filtered by the client.
        self.autoscaling
            .describe_auto_scaling_instances()
            .into_paginator()
            .items()
            .send()
            .try_collect()
            .await
            .map(|items| {
                items
                    .into_iter()
                    .filter(|i| {
                        i.auto_scaling_group_name.as_deref()
                            == Some(self.auto_scaling_group_name.as_str())
                    })
                    .map(|i| i.instance_id.unwrap_or_default())
                    .filter(|id| !id.is_empty())
                    .collect::<Vec<String>>()
            })
            .map_err(|err| ScenarioError::new("Failed to get list of auto scaling instances", &err))
    }

    pub async fn scale_min_size(&self, size: i32) -> Result<(), ScenarioError> {
        let update_group = self
            .autoscaling
            .update_auto_scaling_group()
            .auto_scaling_group_name(self.auto_scaling_group_name.clone())
            .min_size(size)
            .send()
            .await;
        if let Err(err) = update_group {
            return Err(ScenarioError::new(
                format!("Failer to update group to min size ({size}))").as_str(),
                &err,
            ));
        }
        Ok(())
    }

    pub async fn scale_max_size(&self, size: i32) -> Result<(), ScenarioError> {
        // 5. UpdateAutoScalingGroup: update max size to 3.
        let update_group = self
            .autoscaling
            .update_auto_scaling_group()
            .auto_scaling_group_name(self.auto_scaling_group_name.clone())
            .max_size(size)
            .send()
            .await;
        if let Err(err) = update_group {
            return Err(ScenarioError::new(
                format!("Failed to update group to max size ({size})").as_str(),
                &err,
            ));
        }
        Ok(())
    }

    pub async fn scale_desired_capacity(&self, capacity: i32) -> Result<(), ScenarioError> {
        // 7. SetDesiredCapacity: set desired capacity to 2.
        //   Wait for a second instance to launch.
        let update_group = self
            .autoscaling
            .set_desired_capacity()
            .auto_scaling_group_name(self.auto_scaling_group_name.clone())
            .desired_capacity(capacity)
            .send()
            .await;
        if let Err(err) = update_group {
            return Err(ScenarioError::new(
                format!("Failed to update group to desired capacity ({capacity}))").as_str(),
                &err,
            ));
        }
        Ok(())
    }

    pub async fn scale_group_to_zero(&self) -> Result<(), ScenarioError> {
        // If this fails it's fine, just means there are extra cloudwatch metrics events for the scale-down.
        let _ = self
            .autoscaling
            .disable_metrics_collection()
            .auto_scaling_group_name(self.auto_scaling_group_name.clone())
            .send()
            .await;

        // 12. DeleteAutoScalingGroup (to delete the group you must stop all instances):
        //   UpdateAutoScalingGroup with MinSize=0
        let update_group = self
            .autoscaling
            .update_auto_scaling_group()
            .auto_scaling_group_name(self.auto_scaling_group_name.clone())
            .min_size(0)
            .desired_capacity(0)
            .send()
            .await;
        if let Err(err) = update_group {
            return Err(ScenarioError::new(
                "Failed to update group for scaling down&",
                &err,
            ));
        }

        let stable = self.wait_for_stable(0).await;
        if let Err(err) = stable {
            return Err(ScenarioError::with(format!(
                "Error while waiting for group to be stable on scale down: {err}"
            )));
        }

        Ok(())
    }

    pub async fn terminate_some_instance(&self) -> Result<(), ScenarioError> {
        // Retrieve a list of instances in the auto scaling group.
        let auto_scaling_group = self.get_group().await?;
        let instances = auto_scaling_group.instances();
        // Or use other logic to find an instance to terminate.
        let instance = instances.first();
        if let Some(instance) = instance {
            let instance_id = if let Some(instance_id) = instance.instance_id() {
                instance_id
            } else {
                return Err(ScenarioError::with("Missing instance id"));
            };
            let termination = self
                .ec2
                .terminate_instances()
                .instance_ids(instance_id)
                .send()
                .await;
            if let Err(err) = termination {
                Err(ScenarioError::new(
                    "There was a problem terminating an instance",
                    &err,
                ))
            } else {
                Ok(())
            }
        } else {
            Err(ScenarioError::with("There was no instance to terminate"))
        }
    }
}

fn count_group_instances(group: &AutoScalingGroup) -> usize {
    group.instances.as_ref().map(|i| i.len()).unwrap_or(0)
}
```
+ Per informazioni dettagliate sull’API, consulta i seguenti argomenti nella *documentazione di riferimento dell’API SDK AWS per Rust*.
  + [CreateAutoScalingGroup](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.create_auto_scaling_group)
  + [DeleteAutoScalingGroup](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.delete_auto_scaling_group)
  + [DescribeAutoScalingGroups](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.describe_auto_scaling_groups)
  + [DescribeAutoScalingInstances](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.describe_auto_scaling_instances)
  + [DescribeScalingActivities](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.describe_scaling_activities)
  + [DisableMetricsCollection](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.disable_metrics_collection)
  + [EnableMetricsCollection](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.enable_metrics_collection)
  + [SetDesiredCapacity](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.set_desired_capacity)
  + [TerminateInstanceInAutoScalingGroup](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.terminate_instance_in_auto_scaling_group)
  + [UpdateAutoScalingGroup](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.update_auto_scaling_group)

------

# Azioni per l'Auto Scaling utilizzando AWS SDKs
<a name="auto-scaling_code_examples_actions"></a>

I seguenti esempi di codice mostrano come eseguire singole azioni di Auto Scaling con. AWS SDKs Ogni esempio include un collegamento a GitHub, dove è possibile trovare le istruzioni per la configurazione e l'esecuzione del codice. 

Questi estratti chiamano l’API Auto Scaling e sono estratti di codice da programmi più grandi che devono essere eseguiti in modo contestuale. È possibile visualizzare le azioni nel contesto in [Scenari per l'utilizzo dell'Auto Scaling AWS SDKs](auto-scaling_code_examples_scenarios.md). 

 Gli esempi seguenti includono solo le azioni più comunemente utilizzate. Per un elenco completo, consulta la [documentazione di riferimento dell’API Amazon EC2 Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/APIReference/Welcome.html). 

**Topics**
+ [`AttachInstances`](auto-scaling_example_auto-scaling_AttachInstances_section.md)
+ [`AttachLoadBalancerTargetGroups`](auto-scaling_example_auto-scaling_AttachLoadBalancerTargetGroups_section.md)
+ [`AttachLoadBalancers`](auto-scaling_example_auto-scaling_AttachLoadBalancers_section.md)
+ [`CompleteLifecycleAction`](auto-scaling_example_auto-scaling_CompleteLifecycleAction_section.md)
+ [`CreateAutoScalingGroup`](auto-scaling_example_auto-scaling_CreateAutoScalingGroup_section.md)
+ [`CreateLaunchConfiguration`](auto-scaling_example_auto-scaling_CreateLaunchConfiguration_section.md)
+ [`CreateOrUpdateTags`](auto-scaling_example_auto-scaling_CreateOrUpdateTags_section.md)
+ [`DeleteAutoScalingGroup`](auto-scaling_example_auto-scaling_DeleteAutoScalingGroup_section.md)
+ [`DeleteLaunchConfiguration`](auto-scaling_example_auto-scaling_DeleteLaunchConfiguration_section.md)
+ [`DeleteLifecycleHook`](auto-scaling_example_auto-scaling_DeleteLifecycleHook_section.md)
+ [`DeleteNotificationConfiguration`](auto-scaling_example_auto-scaling_DeleteNotificationConfiguration_section.md)
+ [`DeletePolicy`](auto-scaling_example_auto-scaling_DeletePolicy_section.md)
+ [`DeleteScheduledAction`](auto-scaling_example_auto-scaling_DeleteScheduledAction_section.md)
+ [`DeleteTags`](auto-scaling_example_auto-scaling_DeleteTags_section.md)
+ [`DescribeAccountLimits`](auto-scaling_example_auto-scaling_DescribeAccountLimits_section.md)
+ [`DescribeAdjustmentTypes`](auto-scaling_example_auto-scaling_DescribeAdjustmentTypes_section.md)
+ [`DescribeAutoScalingGroups`](auto-scaling_example_auto-scaling_DescribeAutoScalingGroups_section.md)
+ [`DescribeAutoScalingInstances`](auto-scaling_example_auto-scaling_DescribeAutoScalingInstances_section.md)
+ [`DescribeAutoScalingNotificationTypes`](auto-scaling_example_auto-scaling_DescribeAutoScalingNotificationTypes_section.md)
+ [`DescribeLaunchConfigurations`](auto-scaling_example_auto-scaling_DescribeLaunchConfigurations_section.md)
+ [`DescribeLifecycleHookTypes`](auto-scaling_example_auto-scaling_DescribeLifecycleHookTypes_section.md)
+ [`DescribeLifecycleHooks`](auto-scaling_example_auto-scaling_DescribeLifecycleHooks_section.md)
+ [`DescribeLoadBalancers`](auto-scaling_example_auto-scaling_DescribeLoadBalancers_section.md)
+ [`DescribeMetricCollectionTypes`](auto-scaling_example_auto-scaling_DescribeMetricCollectionTypes_section.md)
+ [`DescribeNotificationConfigurations`](auto-scaling_example_auto-scaling_DescribeNotificationConfigurations_section.md)
+ [`DescribePolicies`](auto-scaling_example_auto-scaling_DescribePolicies_section.md)
+ [`DescribeScalingActivities`](auto-scaling_example_auto-scaling_DescribeScalingActivities_section.md)
+ [`DescribeScalingProcessTypes`](auto-scaling_example_auto-scaling_DescribeScalingProcessTypes_section.md)
+ [`DescribeScheduledActions`](auto-scaling_example_auto-scaling_DescribeScheduledActions_section.md)
+ [`DescribeTags`](auto-scaling_example_auto-scaling_DescribeTags_section.md)
+ [`DescribeTerminationPolicyTypes`](auto-scaling_example_auto-scaling_DescribeTerminationPolicyTypes_section.md)
+ [`DetachInstances`](auto-scaling_example_auto-scaling_DetachInstances_section.md)
+ [`DetachLoadBalancers`](auto-scaling_example_auto-scaling_DetachLoadBalancers_section.md)
+ [`DisableMetricsCollection`](auto-scaling_example_auto-scaling_DisableMetricsCollection_section.md)
+ [`EnableMetricsCollection`](auto-scaling_example_auto-scaling_EnableMetricsCollection_section.md)
+ [`EnterStandby`](auto-scaling_example_auto-scaling_EnterStandby_section.md)
+ [`ExecutePolicy`](auto-scaling_example_auto-scaling_ExecutePolicy_section.md)
+ [`ExitStandby`](auto-scaling_example_auto-scaling_ExitStandby_section.md)
+ [`PutLifecycleHook`](auto-scaling_example_auto-scaling_PutLifecycleHook_section.md)
+ [`PutNotificationConfiguration`](auto-scaling_example_auto-scaling_PutNotificationConfiguration_section.md)
+ [`PutScalingPolicy`](auto-scaling_example_auto-scaling_PutScalingPolicy_section.md)
+ [`PutScheduledUpdateGroupAction`](auto-scaling_example_auto-scaling_PutScheduledUpdateGroupAction_section.md)
+ [`RecordLifecycleActionHeartbeat`](auto-scaling_example_auto-scaling_RecordLifecycleActionHeartbeat_section.md)
+ [`ResumeProcesses`](auto-scaling_example_auto-scaling_ResumeProcesses_section.md)
+ [`SetDesiredCapacity`](auto-scaling_example_auto-scaling_SetDesiredCapacity_section.md)
+ [`SetInstanceHealth`](auto-scaling_example_auto-scaling_SetInstanceHealth_section.md)
+ [`SetInstanceProtection`](auto-scaling_example_auto-scaling_SetInstanceProtection_section.md)
+ [`SuspendProcesses`](auto-scaling_example_auto-scaling_SuspendProcesses_section.md)
+ [`TerminateInstanceInAutoScalingGroup`](auto-scaling_example_auto-scaling_TerminateInstanceInAutoScalingGroup_section.md)
+ [`UpdateAutoScalingGroup`](auto-scaling_example_auto-scaling_UpdateAutoScalingGroup_section.md)

# Utilizzare `AttachInstances` con una CLI
<a name="auto-scaling_example_auto-scaling_AttachInstances_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `AttachInstances`.

------
#### [ CLI ]

**AWS CLI**  
**Come collegare un’istanza a un gruppo Auto Scaling**  
Questo esempio collega l’istanza specificata al gruppo Auto Scaling specificato.  

```
aws autoscaling attach-instances \
    --instance-ids i-061c63c5eb45f0416 \
    --auto-scaling-group-name my-asg
```
Questo comando non produce alcun output.  
+  Per i dettagli sull'API, consulta [AttachInstances AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/attach-instances.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio collega l’istanza specificata al gruppo Auto Scaling specificato. Auto Scaling aumenta automaticamente la capacità desiderata del gruppo Auto Scaling.**  

```
Mount-ASInstance -InstanceId i-93633f9b -AutoScalingGroupName my-asg
```
+  Per i dettagli sull'API, vedere [AttachInstances](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio collega l’istanza specificata al gruppo Auto Scaling specificato. Auto Scaling aumenta automaticamente la capacità desiderata del gruppo Auto Scaling.**  

```
Mount-ASInstance -InstanceId i-93633f9b -AutoScalingGroupName my-asg
```
+  Per i dettagli sull'API, vedere [AttachInstances](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzo `AttachLoadBalancerTargetGroups` con un AWS SDK o una CLI
<a name="auto-scaling_example_auto-scaling_AttachLoadBalancerTargetGroups_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `AttachLoadBalancerTargetGroups`.

Gli esempi di operazioni sono estratti di codice da programmi più grandi e devono essere eseguiti nel contesto. È possibile visualizzare questa operazione nel contesto nel seguente esempio di codice: 
+  [Creazione e gestione di un servizio resiliente](auto-scaling_example_cross_ResilientService_section.md) 

------
#### [ .NET ]

**SDK per .NET**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv3/cross-service/ResilientService/AutoScalerActions#code-examples). 

```
    /// <summary>
    /// Attaches an Elastic Load Balancing (ELB) target group to this EC2 Auto Scaling group.
    /// The
    /// </summary>
    /// <param name="autoScalingGroupName">The name of the Auto Scaling group.</param>
    /// <param name="targetGroupArn">The Arn for the target group.</param>
    /// <returns>Async task.</returns>
    public async Task AttachLoadBalancerToGroup(string autoScalingGroupName, string targetGroupArn)
    {
        await _amazonAutoScaling.AttachLoadBalancerTargetGroupsAsync(
            new AttachLoadBalancerTargetGroupsRequest()
            {
                AutoScalingGroupName = autoScalingGroupName,
                TargetGroupARNs = new List<string>() { targetGroupArn }
            });
    }
```
+  Per i dettagli sull'API, consulta la [AttachLoadBalancerTargetGroups](https://docs.aws.amazon.com/goto/DotNetSDKV3/autoscaling-2011-01-01/AttachLoadBalancerTargetGroups)sezione *AWS SDK per .NET API Reference*. 

------
#### [ CLI ]

**AWS CLI**  
**Come collegare un gruppo di destinazione a un gruppo Auto Scaling**  
Questo esempio collega il gruppo di destinazione specificato al gruppo Auto Scaling specificato.  

```
aws autoscaling attach-load-balancer-target-groups \
    --auto-scaling-group-name my-asg \
    --target-group-arns arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-targets/73e2d6bc24d8a067
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Elastic Load Balancing e Amazon EC2 Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-load-balancer.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [AttachLoadBalancerTargetGroups AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/attach-load-balancer-target-groups.html)*Command Reference*. 

------
#### [ JavaScript ]

**SDK per JavaScript (v3)**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javascriptv3/example_code/cross-services/wkflw-resilient-service#code-examples). 

```
    const client = new AutoScalingClient({});
    await client.send(
      new AttachLoadBalancerTargetGroupsCommand({
        AutoScalingGroupName: NAMES.autoScalingGroupName,
        TargetGroupARNs: [state.targetGroupArn],
      }),
    );
```
+  Per i dettagli sull'API, consulta la [AttachLoadBalancerTargetGroups](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/auto-scaling/command/AttachLoadBalancerTargetGroupsCommand)sezione *AWS SDK per JavaScript API Reference*. 

------
#### [ Python ]

**SDK per Python (Boto3)**  
 C'è di più su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/auto-scaling#code-examples). 

```
class AutoScalingWrapper:
    """
    Encapsulates Amazon EC2 Auto Scaling and EC2 management actions.
    """

    def __init__(
        self,
        resource_prefix: str,
        inst_type: str,
        ami_param: str,
        autoscaling_client: boto3.client,
        ec2_client: boto3.client,
        ssm_client: boto3.client,
        iam_client: boto3.client,
    ):
        """
        Initializes the AutoScaler class with the necessary parameters.

        :param resource_prefix: The prefix for naming AWS resources that are created by this class.
        :param inst_type: The type of EC2 instance to create, such as t3.micro.
        :param ami_param: The Systems Manager parameter used to look up the AMI that is created.
        :param autoscaling_client: A Boto3 EC2 Auto Scaling client.
        :param ec2_client: A Boto3 EC2 client.
        :param ssm_client: A Boto3 Systems Manager client.
        :param iam_client: A Boto3 IAM client.
        """
        self.inst_type = inst_type
        self.ami_param = ami_param
        self.autoscaling_client = autoscaling_client
        self.ec2_client = ec2_client
        self.ssm_client = ssm_client
        self.iam_client = iam_client
        sts_client = boto3.client("sts")
        self.account_id = sts_client.get_caller_identity()["Account"]

        self.key_pair_name = f"{resource_prefix}-key-pair"
        self.launch_template_name = f"{resource_prefix}-template-"
        self.group_name = f"{resource_prefix}-group"

        # Happy path
        self.instance_policy_name = f"{resource_prefix}-pol"
        self.instance_role_name = f"{resource_prefix}-role"
        self.instance_profile_name = f"{resource_prefix}-prof"

        # Failure mode
        self.bad_creds_policy_name = f"{resource_prefix}-bc-pol"
        self.bad_creds_role_name = f"{resource_prefix}-bc-role"
        self.bad_creds_profile_name = f"{resource_prefix}-bc-prof"


    def attach_load_balancer_target_group(
        self, lb_target_group: Dict[str, Any]
    ) -> None:
        """
        Attaches an Elastic Load Balancing (ELB) target group to this EC2 Auto Scaling group.
        The target group specifies how the load balancer forwards requests to the instances
        in the group.

        :param lb_target_group: Data about the ELB target group to attach.
        """
        try:
            self.autoscaling_client.attach_load_balancer_target_groups(
                AutoScalingGroupName=self.group_name,
                TargetGroupARNs=[lb_target_group["TargetGroupArn"]],
            )
            log.info(
                "Attached load balancer target group %s to auto scaling group %s.",
                lb_target_group["TargetGroupName"],
                self.group_name,
            )
        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            log.error(
                f"Failed to attach load balancer target group '{lb_target_group['TargetGroupName']}'."
            )
            if error_code == "ResourceContentionFault":
                log.error(
                    "The request failed due to a resource contention issue. "
                    "Ensure that no conflicting operations are being performed on the resource."
                )
            elif error_code == "ServiceLinkedRoleFailure":
                log.error(
                    "The operation failed because the service-linked role is not ready or does not exist. "
                    "Check that the service-linked role exists and is correctly configured."
                )
            log.error(f"Full error:\n\t{err}")
```
+  Per i dettagli sull'API, consulta [AttachLoadBalancerTargetGroups AWS](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/AttachLoadBalancerTargetGroups)*SDK for Python (Boto3) API Reference*. 

------

# Utilizzare `AttachLoadBalancers` con una CLI
<a name="auto-scaling_example_auto-scaling_AttachLoadBalancers_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `AttachLoadBalancers`.

------
#### [ CLI ]

**AWS CLI**  
**Come collegare un Classic Load Balancer al gruppo Auto Scaling**  
Questo esempio collega il Classic Load Balancer specificato al gruppo Auto Scaling specificato.  

```
aws autoscaling attach-load-balancers \
    --load-balancer-names my-load-balancer \
    --auto-scaling-group-name my-asg
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Elastic Load Balancing e Amazon EC2 Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-load-balancer.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [AttachLoadBalancers AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/attach-load-balancers.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio collega il bilanciatore del carico specificato al gruppo Auto Scaling specificato.**  

```
Add-ASLoadBalancer -LoadBalancerName my-lb -AutoScalingGroupName my-asg
```
+  Per i dettagli sull'API, vedere [AttachLoadBalancers](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio collega il bilanciatore del carico specificato al gruppo Auto Scaling specificato.**  

```
Add-ASLoadBalancer -LoadBalancerName my-lb -AutoScalingGroupName my-asg
```
+  Per i dettagli sull'API, vedere [AttachLoadBalancers](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `CompleteLifecycleAction` con una CLI
<a name="auto-scaling_example_auto-scaling_CompleteLifecycleAction_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `CompleteLifecycleAction`.

------
#### [ CLI ]

**AWS CLI**  
**Come completare un’azione del ciclo di vita**  
Questo esempio notifica ad Amazon EC2 Auto Scaling il completamento dell’azione del ciclo di vita specificata in modo che possa completare l’avvio o la chiusura dell’istanza.  

```
aws autoscaling complete-lifecycle-action \
    --lifecycle-hook-name my-launch-hook \
    --auto-scaling-group-name my-asg \
    --lifecycle-action-result CONTINUE \
    --lifecycle-action-token bcd2f1b8-9a78-44d3-8a7a-4dd07d7cf635
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Hook del ciclo di vita di Dimensionamento automatico Amazon EC2 ](https://docs.aws.amazon.com/autoscaling/ec2/userguide/lifecycle-hooks.html)nella *Guida per l’utente di Dimensionamento automatico Amazon EC2.*  
+  Per i dettagli sull'API, consulta [CompleteLifecycleAction AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/complete-lifecycle-action.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio completa l’azione del ciclo di vita specificata.**  

```
Complete-ASLifecycleAction -LifecycleHookName myLifecycleHook -AutoScalingGroupName my-asg -LifecycleActionResult CONTINUE -LifecycleActionToken bcd2f1b8-9a78-44d3-8a7a-4dd07d7cf635
```
+  Per i dettagli sull'API, vedere [CompleteLifecycleAction](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio completa l’azione del ciclo di vita specificata.**  

```
Complete-ASLifecycleAction -LifecycleHookName myLifecycleHook -AutoScalingGroupName my-asg -LifecycleActionResult CONTINUE -LifecycleActionToken bcd2f1b8-9a78-44d3-8a7a-4dd07d7cf635
```
+  Per i dettagli sull'API, vedere [CompleteLifecycleAction](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzo `CreateAutoScalingGroup` con un AWS SDK o una CLI
<a name="auto-scaling_example_auto-scaling_CreateAutoScalingGroup_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `CreateAutoScalingGroup`.

Gli esempi di operazioni sono estratti di codice da programmi più grandi e devono essere eseguiti nel contesto. È possibile visualizzare questa operazione nel contesto nei seguenti esempi di codice: 
+  [Informazioni di base](auto-scaling_example_auto-scaling_Scenario_GroupsAndInstances_section.md) 
+  [Creazione e gestione di un servizio resiliente](auto-scaling_example_cross_ResilientService_section.md) 

------
#### [ .NET ]

**SDK per .NET (v4)**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv4/AutoScaling#code-examples). 

```
    /// <summary>
    /// Create a new Amazon EC2 Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name to use for the new Auto Scaling
    /// group.</param>
    /// <param name="launchTemplateName">The name of the Amazon EC2 Auto Scaling
    /// launch template to use to create instances in the group.</param>
    /// <returns>A Boolean value indicating the success of the action.</returns>
    public async Task<bool> CreateAutoScalingGroupAsync(
        string groupName,
        string launchTemplateName,
        string availabilityZone)
    {
        var templateSpecification = new LaunchTemplateSpecification
        {
            LaunchTemplateName = launchTemplateName,
        };

        var zoneList = new List<string>
            {
                availabilityZone,
            };

        var request = new CreateAutoScalingGroupRequest
        {
            AutoScalingGroupName = groupName,
            AvailabilityZones = zoneList,
            LaunchTemplate = templateSpecification,
            MaxSize = 6,
            MinSize = 1
        };
        try
        {
            var response = await _amazonAutoScaling.CreateAutoScalingGroupAsync(request);
            Console.WriteLine($"{groupName} Auto Scaling Group created");
            return response.HttpStatusCode == System.Net.HttpStatusCode.OK;
        }
        catch (AlreadyExistsException)
        {
            Console.WriteLine($"{groupName} Auto Scaling Group already exists.");
            return true;
        }
    }
```
+  Per i dettagli sull'API, consulta la [CreateAutoScalingGroup](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/CreateAutoScalingGroup)sezione *AWS SDK per .NET API Reference*. 

------
#### [ C\$1\$1 ]

**SDK per C\$1\$1**  
 C'è di più su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/autoscaling#code-examples). 

```
        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

    Aws::AutoScaling::AutoScalingClient autoScalingClient(clientConfig);

        Aws::AutoScaling::Model::CreateAutoScalingGroupRequest request;
        request.SetAutoScalingGroupName(groupName);
        Aws::Vector<Aws::String> availabilityGroupZones;
        availabilityGroupZones.push_back(
                availabilityZones[availabilityZoneChoice - 1].GetZoneName());
        request.SetAvailabilityZones(availabilityGroupZones);
        request.SetMaxSize(1);
        request.SetMinSize(1);

        Aws::AutoScaling::Model::LaunchTemplateSpecification launchTemplateSpecification;
        launchTemplateSpecification.SetLaunchTemplateName(templateName);
        request.SetLaunchTemplate(launchTemplateSpecification);

        Aws::AutoScaling::Model::CreateAutoScalingGroupOutcome outcome =
                autoScalingClient.CreateAutoScalingGroup(request);

        if (outcome.IsSuccess()) {
            std::cout << "Created Auto Scaling group '" << groupName << "'..."
                      << std::endl;
        }
        else if (outcome.GetError().GetErrorType() ==
                 Aws::AutoScaling::AutoScalingErrors::ALREADY_EXISTS_FAULT) {
            std::cout << "Auto Scaling group '" << groupName << "' already exists."
                      << std::endl;
        }
        else {
            std::cerr << "Error with AutoScaling::CreateAutoScalingGroup. "
                      << outcome.GetError().GetMessage()
                      << std::endl;

        }
```
+  Per i dettagli sull'API, consulta la [CreateAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/CreateAutoScalingGroup)sezione *AWS SDK per C\$1\$1 API Reference*. 

------
#### [ CLI ]

**AWS CLI**  
**Esempio 1: come creare un gruppo Auto Scaling**  
L’esempio `create-auto-scaling-group` seguente crea un gruppo Auto Scaling in sottoreti in più zone di disponibilità all’interno di una Regione. Le istanze vengono avviate con la versione predefinita del modello di avvio specificato. Tieni presente che le impostazioni predefinite vengono utilizzate per la maggior parte delle altre impostazioni, come le policy di terminazione e la configurazione dei controlli dell’integrità.  

```
aws autoscaling create-auto-scaling-group \
    --auto-scaling-group-name my-asg \
    --launch-template LaunchTemplateId=lt-1234567890abcde12 \
    --min-size 1 \
    --max-size 5 \
    --vpc-zone-identifier "subnet-5ea0c127,subnet-6194ea3b,subnet-c934b782"
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Gruppi Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/AutoScalingGroup.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 2: come collegare un’istanza di Application Load Balancer, Network Load Balancer o Gateway Load Balancer**  
Questo esempio specifica l’ARN di un gruppo di destinazione per un bilanciatore del carico che supporta il traffico previsto. Il tipo di controllo dell’integrità è impostato su `ELB`, ovvero quando Elastic Load Balancing segnala un’istanza non integra, il gruppo Auto Scaling la sostituisce. Il comando definisce anche un periodo di tolleranza di `600` secondi per il controllo dell’integrità. Il periodo di tolleranza consente di evitare la terminazione anticipata delle istanze appena avviate.  

```
aws autoscaling create-auto-scaling-group \
    --auto-scaling-group-name my-asg \
    --launch-template LaunchTemplateId=lt-1234567890abcde12 \
    --target-group-arns arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-targets/943f017f100becff \
    --health-check-type ELB \
    --health-check-grace-period 600 \
    --min-size 1 \
    --max-size 5 \
    --vpc-zone-identifier "subnet-5ea0c127,subnet-6194ea3b,subnet-c934b782"
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Elastic Load Balancing e Amazon EC2 Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-load-balancer.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 3: come specificare un gruppo di posizionamento e utilizzare la versione più recente del modello di avvio**  
Questo esempio avvia le istanze in un gruppo di posizionamento all’interno di un’unica zona di disponibilità. Ciò può essere utile per gruppi a bassa latenza con carichi di lavoro basati sul calcolo ad alte prestazioni (HPC). Questo esempio specifica anche la dimensione minima, la dimensione massima e la capacità desiderata del gruppo.  

```
aws autoscaling create-auto-scaling-group \
    --auto-scaling-group-name my-asg \
    --launch-template LaunchTemplateId=lt-1234567890abcde12,Version='$Latest' \
    --min-size 1 \
    --max-size 5 \
    --desired-capacity 3 \
    --placement-group my-placement-group \
    --vpc-zone-identifier "subnet-6194ea3b"
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Gruppi di collocamento](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html) nella *Guida per l’utente di Amazon EC2 per le istanze Linux*.  
**Esempio 4: come specificare un gruppo Auto Scaling a istanza singola e utilizzare una versione specifica del modello di avvio**  
Questo esempio crea un gruppo Auto Scaling con capacità minima e massima impostate su `1` per forzare l’esecuzione di un’istanza. Il comando specifica anche v1 come versione di un modello di avvio in cui è specificato l’ID di un’interfaccia di rete elastica (ENI) esistente. Quando si utilizza un modello di avvio che specifica una interfaccia di rete elastica (ENI) esistente per eth0, è necessario specificare una zona di disponibilità per il gruppo Auto Scaling corrispondente all’interfaccia di rete, senza specificare anche un ID di sottorete nella richiesta.  

```
aws autoscaling create-auto-scaling-group \
    --auto-scaling-group-name my-asg-single-instance \
    --launch-template LaunchTemplateName=my-template-for-auto-scaling,Version='1' \
    --min-size 1 \
    --max-size 1 \
    --availability-zones us-west-2a
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Gruppi Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/AutoScalingGroup.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 5: come specificare una policy di terminazione diversa**  
Questo esempio crea un gruppo Auto Scaling utilizzando una configurazione di avvio e imposta la policy di terminazione per terminare prima le istanze più vecchie. Il comando applica inoltre un tag al gruppo e alle relative istanze, con una chiave `Role` e un valore `WebServer`.  

```
aws autoscaling create-auto-scaling-group \
    --auto-scaling-group-name my-asg \
    --launch-configuration-name my-lc \
    --min-size 1 \
    --max-size 5 \
    --termination-policies "OldestInstance" \
    --tags "ResourceId=my-asg,ResourceType=auto-scaling-group,Key=Role,Value=WebServer,PropagateAtLaunch=true" \
    --vpc-zone-identifier "subnet-5ea0c127,subnet-6194ea3b,subnet-c934b782"
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Utilizzare le policy di terminazione di Amazon EC2 Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-termination-policies.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 6: come specificare un hook del ciclo di vita all’avvio**  
L’esempio seguente crea un gruppo Auto Scaling con un hook del ciclo di vita che supporta un’azione personalizzata all’avvio delle istanze.  

```
aws autoscaling create-auto-scaling-group \
    --cli-input-json file://~/config.json
```
Contenuto del file `config.json`:  

```
{
    "AutoScalingGroupName": "my-asg",
    "LaunchTemplate": {
        "LaunchTemplateId": "lt-1234567890abcde12"
    },
    "LifecycleHookSpecificationList": [{
        "LifecycleHookName": "my-launch-hook",
        "LifecycleTransition": "autoscaling:EC2_INSTANCE_LAUNCHING",
        "NotificationTargetARN": "arn:aws:sqs:us-west-2:123456789012:my-sqs-queue",
        "RoleARN": "arn:aws:iam::123456789012:role/my-notification-role",
        "NotificationMetadata": "SQS message metadata",
        "HeartbeatTimeout": 4800,
        "DefaultResult": "ABANDON"
    }],
    "MinSize": 1,
    "MaxSize": 5,
    "VPCZoneIdentifier": "subnet-5ea0c127,subnet-6194ea3b,subnet-c934b782",
    "Tags": [{
        "ResourceType": "auto-scaling-group",
        "ResourceId": "my-asg",
        "PropagateAtLaunch": true,
        "Value": "test",
        "Key": "environment"
    }]
}
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Hook del ciclo di vita di Dimensionamento automatico Amazon EC2 ](https://docs.aws.amazon.com/autoscaling/ec2/userguide/lifecycle-hooks.html)nella *Guida per l’utente di Dimensionamento automatico Amazon EC2.*  
**Esempio 7: come specificare un hook del ciclo di vita alla terminazione**  
L’esempio seguente crea un gruppo Auto Scaling con un hook del ciclo di vita che supporta un’azione personalizzata alla terminazione delle istanze.  

```
aws autoscaling create-auto-scaling-group \
    --cli-input-json file://~/config.json
```
Contenuto di `config.json`:  

```
{
    "AutoScalingGroupName": "my-asg",
    "LaunchTemplate": {
        "LaunchTemplateId": "lt-1234567890abcde12"
    },
    "LifecycleHookSpecificationList": [{
        "LifecycleHookName": "my-termination-hook",
        "LifecycleTransition": "autoscaling:EC2_INSTANCE_TERMINATING",
        "HeartbeatTimeout": 120,
        "DefaultResult": "CONTINUE"
    }],
    "MinSize": 1,
    "MaxSize": 5,
    "TargetGroupARNs": [
        "arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-targets/73e2d6bc24d8a067"
    ],
    "VPCZoneIdentifier": "subnet-5ea0c127,subnet-6194ea3b,subnet-c934b782"
}
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Hook del ciclo di vita di Dimensionamento automatico Amazon EC2 ](https://docs.aws.amazon.com/autoscaling/ec2/userguide/lifecycle-hooks.html)nella *Guida per l’utente di Dimensionamento automatico Amazon EC2.*  
**Esempio 8: come specificare una policy di terminazione personalizzata**  
Questo esempio crea un gruppo Auto Scaling che specifica una policy di terminazione personalizzata della funzione Lambda che indica ad Amazon EC2 Auto Scaling le istanze da terminare durante la riduzione orizzontale.  

```
aws autoscaling create-auto-scaling-group \
    --auto-scaling-group-name my-asg-single-instance \
    --launch-template LaunchTemplateName=my-template-for-auto-scaling \
    --min-size 1 \
    --max-size 5 \
    --termination-policies "arn:aws:lambda:us-west-2:123456789012:function:HelloFunction:prod" \
    --vpc-zone-identifier "subnet-5ea0c127,subnet-6194ea3b,subnet-c934b782"
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Creazione di una policy di terminazione personalizzata con Lambda](https://docs.aws.amazon.com/autoscaling/ec2/userguide/lambda-custom-termination-policy.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [CreateAutoScalingGroup AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/create-auto-scaling-group.html)*Command Reference*. 

------
#### [ Java ]

**SDK per Java 2.x**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/autoscale#code-examples). 

```
import software.amazon.awssdk.core.waiters.WaiterResponse;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.autoscaling.AutoScalingClient;
import software.amazon.awssdk.services.autoscaling.model.AutoScalingException;
import software.amazon.awssdk.services.autoscaling.model.CreateAutoScalingGroupRequest;
import software.amazon.awssdk.services.autoscaling.model.DescribeAutoScalingGroupsRequest;
import software.amazon.awssdk.services.autoscaling.model.DescribeAutoScalingGroupsResponse;
import software.amazon.awssdk.services.autoscaling.model.LaunchTemplateSpecification;
import software.amazon.awssdk.services.autoscaling.waiters.AutoScalingWaiter;

/**
 * Before running this SDK for Java (v2) code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class CreateAutoScalingGroup {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                    <groupName> <launchTemplateName> <serviceLinkedRoleARN> <vpcZoneId>

                Where:
                    groupName - The name of the Auto Scaling group.
                    launchTemplateName - The name of the launch template.\s
                    vpcZoneId - A subnet Id for a virtual private cloud (VPC) where instances in the Auto Scaling group can be created.
                """;

        if (args.length != 3) {
            System.out.println(usage);
            System.exit(1);
        }

        String groupName = args[0];
        String launchTemplateName = args[1];
        String vpcZoneId = args[2];
        AutoScalingClient autoScalingClient = AutoScalingClient.builder()
                .region(Region.US_EAST_1)
                .build();

        createAutoScalingGroup(autoScalingClient, groupName, launchTemplateName, vpcZoneId);
        autoScalingClient.close();
    }

    public static void createAutoScalingGroup(AutoScalingClient autoScalingClient,
            String groupName,
            String launchTemplateName,
            String vpcZoneId) {

        try {
            AutoScalingWaiter waiter = autoScalingClient.waiter();
            LaunchTemplateSpecification templateSpecification = LaunchTemplateSpecification.builder()
                    .launchTemplateName(launchTemplateName)
                    .build();

            CreateAutoScalingGroupRequest request = CreateAutoScalingGroupRequest.builder()
                    .autoScalingGroupName(groupName)
                    .availabilityZones("us-east-1a")
                    .launchTemplate(templateSpecification)
                    .maxSize(1)
                    .minSize(1)
                    .vpcZoneIdentifier(vpcZoneId)
                    .build();

            autoScalingClient.createAutoScalingGroup(request);
            DescribeAutoScalingGroupsRequest groupsRequest = DescribeAutoScalingGroupsRequest.builder()
                    .autoScalingGroupNames(groupName)
                    .build();

            WaiterResponse<DescribeAutoScalingGroupsResponse> waiterResponse = waiter
                    .waitUntilGroupExists(groupsRequest);
            waiterResponse.matched().response().ifPresent(System.out::println);
            System.out.println("Auto Scaling Group created");

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}
```
+  Per i dettagli sull'API, consulta la [CreateAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/CreateAutoScalingGroup)sezione *AWS SDK for Java 2.x API Reference*. 

------
#### [ Kotlin ]

**SDK per Kotlin**  
 C'è di più su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/autoscale#code-examples). 

```
suspend fun createAutoScalingGroup(
    groupName: String,
    launchTemplateNameVal: String,
    serviceLinkedRoleARNVal: String,
    vpcZoneIdVal: String,
) {
    val templateSpecification =
        LaunchTemplateSpecification {
            launchTemplateName = launchTemplateNameVal
        }

    val request =
        CreateAutoScalingGroupRequest {
            autoScalingGroupName = groupName
            availabilityZones = listOf("us-east-1a")
            launchTemplate = templateSpecification
            maxSize = 1
            minSize = 1
            vpcZoneIdentifier = vpcZoneIdVal
            serviceLinkedRoleArn = serviceLinkedRoleARNVal
        }

    // This object is required for the waiter call.
    val groupsRequestWaiter =
        DescribeAutoScalingGroupsRequest {
            autoScalingGroupNames = listOf(groupName)
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        autoScalingClient.createAutoScalingGroup(request)
        autoScalingClient.waitUntilGroupExists(groupsRequestWaiter)
        println("$groupName was created!")
    }
}
```
+  Per i dettagli sull'API, [CreateAutoScalingGroup](https://sdk.amazonaws.com/kotlin/api/latest/index.html)consulta *AWS SDK for Kotlin* API reference. 

------
#### [ PHP ]

**SDK per PHP**  
 C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code/auto-scaling#code-examples). 

```
    public function createAutoScalingGroup(
        $autoScalingGroupName,
        $availabilityZones,
        $minSize,
        $maxSize,
        $launchTemplateId
    ) {
        return $this->autoScalingClient->createAutoScalingGroup([
            'AutoScalingGroupName' => $autoScalingGroupName,
            'AvailabilityZones' => $availabilityZones,
            'MinSize' => $minSize,
            'MaxSize' => $maxSize,
            'LaunchTemplate' => [
                'LaunchTemplateId' => $launchTemplateId,
            ],
        ]);
    }
```
+  Per i dettagli sull'API, consulta la [CreateAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/CreateAutoScalingGroup)sezione *AWS SDK per PHP API Reference*. 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio crea un gruppo Auto Scaling con il nome e gli attributi specificati. La capacità predefinita desiderata è la dimensione minima. Pertanto, questo gruppo Auto Scaling avvia due istanze, una in ciascuna delle due zone di disponibilità specificate.**  

```
New-ASAutoScalingGroup -AutoScalingGroupName my-asg -LaunchConfigurationName my-lc -MinSize 2 -MaxSize 6 -AvailabilityZone @("us-west-2a", "us-west-2b")
```
+  Per i dettagli sull'API, vedere [CreateAutoScalingGroup](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio crea un gruppo Auto Scaling con il nome e gli attributi specificati. La capacità predefinita desiderata è la dimensione minima. Pertanto, questo gruppo Auto Scaling avvia due istanze, una in ciascuna delle due zone di disponibilità specificate.**  

```
New-ASAutoScalingGroup -AutoScalingGroupName my-asg -LaunchConfigurationName my-lc -MinSize 2 -MaxSize 6 -AvailabilityZone @("us-west-2a", "us-west-2b")
```
+  Per i dettagli sull'API, vedere [CreateAutoScalingGroup](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------
#### [ Python ]

**SDK per Python (Boto3)**  
 C'è altro su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/auto-scaling#code-examples). 

```
class AutoScalingWrapper:
    """Encapsulates Amazon EC2 Auto Scaling actions."""

    def __init__(self, autoscaling_client):
        """
        :param autoscaling_client: A Boto3 Amazon EC2 Auto Scaling client.
        """
        self.autoscaling_client = autoscaling_client


    def create_group(
        self,
        group_name: str,
        group_zones: List[str],
        launch_template_name: str,
        min_size: int,
        max_size: int,
    ) -> None:
        """
        Creates an Auto Scaling group.

        :param group_name: The name to give to the group.
        :param group_zones: The Availability Zones in which instances can be created.
        :param launch_template_name: The name of an existing Amazon EC2 launch template.
                                     The launch template specifies the configuration of
                                     instances that are created by auto scaling activities.
        :param min_size: The minimum number of active instances in the group.
        :param max_size: The maximum number of active instances in the group.
        :return: None
        :raises ClientError: If there is an error creating the Auto Scaling group.
        """
        try:
            self.autoscaling_client.create_auto_scaling_group(
                AutoScalingGroupName=group_name,
                AvailabilityZones=group_zones,
                LaunchTemplate={
                    "LaunchTemplateName": launch_template_name,
                    "Version": "$Default",
                },
                MinSize=min_size,
                MaxSize=max_size,
            )

            # Wait for the group to exist.
            waiter = self.autoscaling_client.get_waiter("group_exists")
            waiter.wait(AutoScalingGroupNames=[group_name])

            logger.info(f"Successfully created Auto Scaling group {group_name}.")

        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            logger.error(f"Failed to create Auto Scaling group {group_name}.")
            if error_code == "AlreadyExistsFault":
                logger.error(
                    f"An Auto Scaling group with the name '{group_name}' already exists. "
                    "Please use a different name or update the existing group.",
                )
            elif error_code == "LimitExceededFault":
                logger.error(
                    "The request failed because you have reached the limit "
                    "on the number of Auto Scaling groups or launch configurations. "
                    "Consider deleting unused resources or request a limit increase. "
                    "\nSee Auto Scaling Service Quota documentation here:"
                    "\n\thttps://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-quotas.html"
                )
            logger.error(f"Full error:\n\t{err}")
            raise
```
+  Per i dettagli sull'API, consulta [CreateAutoScalingGroup AWS](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/CreateAutoScalingGroup)*SDK for Python (Boto3) API Reference*. 

------
#### [ Rust ]

**SDK per Rust**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/rustv1/examples/auto-scaling#code-examples). 

```
async fn create_group(client: &Client, name: &str, id: &str) -> Result<(), Error> {
    client
        .create_auto_scaling_group()
        .auto_scaling_group_name(name)
        .instance_id(id)
        .min_size(1)
        .max_size(5)
        .send()
        .await?;

    println!("Created AutoScaling group");

    Ok(())
}
```
+  Per i dettagli sulle API, consulta il *riferimento [CreateAutoScalingGroup](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.create_auto_scaling_group)all'API AWS SDK for Rust*. 

------
#### [ SAP ABAP ]

**SDK per SAP ABAP**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/sap-abap/services/asc#code-examples). 

```
    DATA lo_launch_template TYPE REF TO /aws1/cl_asclaunchtemplatespec.
    
    " Example: iv_group_name = 'my-auto-scaling-group'
    " Example: iv_launch_template_name = 'my-launch-template'
    " Example: iv_min_size = 1
    " Example: iv_max_size = 3
    " Example: iv_vpc_zone_identifier = 'subnet-12345,subnet-67890' (for VPC)
    
    TRY.
        " Create launch template specification
        lo_launch_template = NEW /aws1/cl_asclaunchtemplatespec(
          iv_launchtemplatename = iv_launch_template_name
          iv_version = '$Default' ).

        " Create the Auto Scaling group
        " Use VPCZoneIdentifier for VPC subnets, or AvailabilityZones for EC2-Classic
        IF iv_vpc_zone_identifier IS NOT INITIAL.
          " VPC-based deployment - use subnet IDs
          ao_asc->createautoscalinggroup(
            iv_autoscalinggroupname = iv_group_name
            iv_vpczoneidentifier = iv_vpc_zone_identifier
            io_launchtemplate = lo_launch_template
            iv_minsize = iv_min_size
            iv_maxsize = iv_max_size ).
        ELSE.
          " EC2-Classic or default VPC - use availability zones
          ao_asc->createautoscalinggroup(
            iv_autoscalinggroupname = iv_group_name
            it_availabilityzones = it_group_zones
            io_launchtemplate = lo_launch_template
            iv_minsize = iv_min_size
            iv_maxsize = iv_max_size ).
        ENDIF.

        " Wait for the group to be created (simplified - in production use proper polling)
        WAIT UP TO 10 SECONDS.

        MESSAGE 'Auto Scaling group created successfully' TYPE 'I'.

      CATCH /aws1/cx_ascalreadyexistsfault INTO DATA(lo_already_exists).
        RAISE EXCEPTION lo_already_exists.
      CATCH /aws1/cx_asclimitexceededfault INTO DATA(lo_limit_exceeded).
        RAISE EXCEPTION lo_limit_exceeded.
      CATCH /aws1/cx_rt_generic INTO DATA(lo_generic_exception).
        RAISE EXCEPTION lo_generic_exception.
    ENDTRY.
```
+  Per i dettagli sulle API, [CreateAutoScalingGroup](https://docs.aws.amazon.com/sdk-for-sap-abap/v1/api/latest/index.html)consulta *AWS SDK for SAP ABAP* API reference. 

------

# Utilizzare `CreateLaunchConfiguration` con una CLI
<a name="auto-scaling_example_auto-scaling_CreateLaunchConfiguration_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `CreateLaunchConfiguration`.

------
#### [ CLI ]

**AWS CLI**  
**Esempio 1: come creare una configurazione di avvio.**  
Questo esempio crea una configurazione di avvio semplice.  

```
aws autoscaling create-launch-configuration \
    --launch-configuration-name my-lc \
    --image-id ami-04d5cc9b88example \
    --instance-type m5.large
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Creazione di configurazioni di avvio](https://docs.aws.amazon.com/autoscaling/ec2/userguide/create-launch-config.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 2: creare una configurazione di avvio con un gruppo di sicurezza, una coppia di chiavi e uno script di bootstrap**  
Questo esempio crea una configurazione di avvio con un gruppo di sicurezza, una coppia di chiavi e uno script di bootstrap contenuti nei dati utente.  

```
aws autoscaling create-launch-configuration \
    --launch-configuration-name my-lc \
    --image-id ami-04d5cc9b88example \
    --instance-type m5.large \
    --security-groups sg-eb2af88example \
    --key-name my-key-pair \
    --user-data file://myuserdata.txt
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Creazione di configurazioni di avvio](https://docs.aws.amazon.com/autoscaling/ec2/userguide/create-launch-config.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 3: come creare una configurazione di avvio con un ruolo IAM**  
Questo esempio crea una configurazione di avvio con il nome del profilo dell’istanza di un ruolo IAM.  

```
aws autoscaling create-launch-configuration \
    --launch-configuration-name my-lc \
    --image-id ami-04d5cc9b88example \
    --instance-type m5.large \
    --iam-instance-profile my-autoscaling-role
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Ruolo IAM per le applicazioni in esecuzione sulle istanze Amazon EC2](https://docs.aws.amazon.com/autoscaling/ec2/userguide/us-iam-role.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 4: come creare una configurazione di avvio con il monitoraggio dettagliato abilitato**  
Questo esempio crea una configurazione di avvio con il monitoraggio dettagliato di EC2 abilitato, che invia le metriche EC2 in periodi di 1 minuto. CloudWatch   

```
aws autoscaling create-launch-configuration \
    --launch-configuration-name my-lc \
    --image-id ami-04d5cc9b88example \
    --instance-type m5.large \
    --instance-monitoring Enabled=true
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Configurazione del monitoraggio per le istanze Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/enable-as-instance-metrics.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 5: come creare una configurazione di avvio che avvia le istanze spot**  
Questo esempio crea una configurazione di avvio che utilizza le istanze spot come unica opzione di acquisto.  

```
aws autoscaling create-launch-configuration \
    --launch-configuration-name my-lc \
    --image-id ami-04d5cc9b88example \
    --instance-type m5.large \
    --spot-price "0.50"
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Richiesta di istanze spot](https://docs.aws.amazon.com/autoscaling/ec2/userguide/asg-launch-spot-instances.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 6: come creare una configurazione di avvio utilizzando un’istanza EC2**  
Questo esempio crea una configurazione di avvio basata sugli attributi di un’istanza esistente. Sostituisce la tenancy del posizionamento e l’eventuale impostazione di un indirizzo IP pubblico includendo le opzioni `--placement-tenancy` e `--no-associate-public-ip-address`.  

```
aws autoscaling create-launch-configuration \
    --launch-configuration-name my-lc-from-instance \
    --instance-id i-0123a456700123456 \
    --instance-type m5.large \
    --no-associate-public-ip-address \
    --placement-tenancy dedicated
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Creazione di una configurazione di avvio utilizzando un’istanza EC2](https://docs.aws.amazon.com/autoscaling/ec2/userguide/create-lc-with-instanceID.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 7: come creare una configurazione di avvio con una mappatura dei dispositivi a blocchi per un volume Amazon EBS**  
Questo esempio crea una configurazione di avvio con una mappatura dei dispositivi a blocchi per un volume `gp3` Amazon EBS con il nome di dispositivo `/dev/sdh` e una dimensione del volume pari a 20.  

```
aws autoscaling create-launch-configuration \
    --launch-configuration-name my-lc \
    --image-id ami-04d5cc9b88example \
    --instance-type m5.large \
    --block-device-mappings '[{"DeviceName":"/dev/sdh","Ebs":{"VolumeSize":20,"VolumeType":"gp3"}}]'
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [EBS](https://docs.aws.amazon.com/autoscaling/ec2/APIReference/API_Ebs.html) nella *documentazione di riferimento dell’API Amazon EC2 Auto Scaling*.  
*Per informazioni sulla sintassi per citare i valori dei parametri in formato JSON, vedete [Uso delle virgolette con le stringhe nella CLI AWS nella Guida per l'utente dell'interfaccia a riga](https://docs.aws.amazon.com/cli/latest/userguide/cli-usage-parameters-quoting-strings.html) di comando.AWS *  
**Esempio 8: come creare una configurazione di avvio con una mappatura dei dispositivi a blocchi per un volume dell’archivio dell’istanza**  
Questo esempio crea una configurazione di avvio con `ephemeral1` come volume di archivio dell’istanza con il nome di dispositivo `/dev/sdc`.  

```
aws autoscaling create-launch-configuration \
    --launch-configuration-name my-lc \
    --image-id ami-04d5cc9b88example \
    --instance-type m5.large \
    --block-device-mappings '[{"DeviceName":"/dev/sdc","VirtualName":"ephemeral1"}]'
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta il riferimento [BlockDeviceMapping](https://docs.aws.amazon.com/autoscaling/ec2/APIReference/API_BlockDeviceMapping.html)all'*API Amazon EC2 Auto Scaling*.  
*Per informazioni sulla sintassi per citare i valori dei parametri in formato JSON, vedete [Uso delle virgolette con le stringhe nella CLI AWS nella Guida per l'utente dell'interfaccia a riga](https://docs.aws.amazon.com/cli/latest/userguide/cli-usage-parameters-quoting-strings.html) di comando.AWS *  
**Esempio 9: come creare una configurazione di avvio e impedire a un dispositivo a blocchi di collegarsi al momento dell’avvio**  
Questo esempio crea una configurazione di avvio che elimina un dispositivo a blocchi specificato dalla mappatura dei dispositivi a blocchi dell’AMI (ad esempio, `/dev/sdf`).  

```
aws autoscaling create-launch-configuration \
    --launch-configuration-name my-lc \
    --image-id ami-04d5cc9b88example \
    --instance-type m5.large \
    --block-device-mappings '[{"DeviceName":"/dev/sdf","NoDevice":""}]'
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta il riferimento [BlockDeviceMapping](https://docs.aws.amazon.com/autoscaling/ec2/APIReference/API_BlockDeviceMapping.html)all'*API Amazon EC2 Auto Scaling*.  
*Per informazioni sulla sintassi per citare i valori dei parametri in formato JSON, vedete [Uso delle virgolette con le stringhe nella CLI AWS nella Guida per l'utente dell'interfaccia a riga](https://docs.aws.amazon.com/cli/latest/userguide/cli-usage-parameters-quoting-strings.html) di comando.AWS *  
+  *Per i dettagli sull'API, consulta Command Reference. [CreateLaunchConfiguration](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/create-launch-configuration.html)AWS CLI * 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio crea una configurazione di avvio denominata “my-lc”. Le istanze EC2 lanciate dai gruppi Auto Scaling che utilizzano questa configurazione di avvio utilizzano il tipo di istanza, l’AMI, il gruppo di sicurezza e il ruolo IAM specificati.**  

```
New-ASLaunchConfiguration -LaunchConfigurationName my-lc -InstanceType "m3.medium" -ImageId "ami-12345678" -SecurityGroup "sg-12345678" -IamInstanceProfile "myIamRole"
```
+  Per i dettagli sull'API, vedere [CreateLaunchConfiguration](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio crea una configurazione di avvio denominata “my-lc”. Le istanze EC2 lanciate dai gruppi Auto Scaling che utilizzano questa configurazione di avvio utilizzano il tipo di istanza, l’AMI, il gruppo di sicurezza e il ruolo IAM specificati.**  

```
New-ASLaunchConfiguration -LaunchConfigurationName my-lc -InstanceType "m3.medium" -ImageId "ami-12345678" -SecurityGroup "sg-12345678" -IamInstanceProfile "myIamRole"
```
+  Per i dettagli sull'API, vedere [CreateLaunchConfiguration](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `CreateOrUpdateTags` con una CLI
<a name="auto-scaling_example_auto-scaling_CreateOrUpdateTags_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `CreateOrUpdateTags`.

------
#### [ CLI ]

**AWS CLI**  
**Come creare o modificare i tag per un gruppo Auto Scaling**  
Questo esempio aggiunge due tag al gruppo Auto Scaling specificato.  

```
aws autoscaling create-or-update-tags \
    --tags ResourceId=my-asg,ResourceType=auto-scaling-group,Key=Role,Value=WebServer,PropagateAtLaunch=true ResourceId=my-asg,ResourceType=auto-scaling-group,Key=Dept,Value=Research,PropagateAtLaunch=true
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Tagging di gruppi e istanze Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-tagging.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [CreateOrUpdateTags AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/create-or-update-tags.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio aggiunge un unico tag al gruppo Auto Scaling specificato. La chiave del tag è 'myTag' e il valore del tag è ''. myTagValue Auto Scaling propaga questo tag alle istanze EC2 successive avviate dal gruppo Auto Scaling. La sintassi utilizzata da questo esempio richiede la PowerShell versione 3 o successiva.**  

```
Set-ASTag -Tag @( @{ResourceType="auto-scaling-group"; ResourceId="my-asg"; Key="myTag"; Value="myTagValue"; PropagateAtLaunch=$true} )
```
**Esempio 2: con PowerShell la versione 2, è necessario utilizzare New-Object per creare il tag per il parametro Tag.**  

```
$tag = New-Object Amazon.AutoScaling.Model.Tag
$tag.ResourceType = "auto-scaling-group"
$tag.ResourceId = "my-asg" 
$tag.Key = "myTag" 
$tag.Value = "myTagValue"
$tag.PropagateAtLaunch = $true
Set-ASTag -Tag $tag
```
+  Per i dettagli sull'API, vedere [CreateOrUpdateTags](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference* (V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio aggiunge un unico tag al gruppo Auto Scaling specificato. La chiave del tag è 'myTag' e il valore del tag è ''. myTagValue Auto Scaling propaga questo tag alle istanze EC2 successive avviate dal gruppo Auto Scaling. La sintassi utilizzata da questo esempio richiede la PowerShell versione 3 o successiva.**  

```
Set-ASTag -Tag @( @{ResourceType="auto-scaling-group"; ResourceId="my-asg"; Key="myTag"; Value="myTagValue"; PropagateAtLaunch=$true} )
```
**Esempio 2: con PowerShell la versione 2, è necessario utilizzare New-Object per creare il tag per il parametro Tag.**  

```
$tag = New-Object Amazon.AutoScaling.Model.Tag
$tag.ResourceType = "auto-scaling-group"
$tag.ResourceId = "my-asg" 
$tag.Key = "myTag" 
$tag.Value = "myTagValue"
$tag.PropagateAtLaunch = $true
Set-ASTag -Tag $tag
```
+  Per i dettagli sull'API, vedere [CreateOrUpdateTags](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference* (V5). 

------

# Utilizzo `DeleteAutoScalingGroup` con un AWS SDK o una CLI
<a name="auto-scaling_example_auto-scaling_DeleteAutoScalingGroup_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DeleteAutoScalingGroup`.

Gli esempi di operazioni sono estratti di codice da programmi più grandi e devono essere eseguiti nel contesto. È possibile visualizzare questa operazione nel contesto nei seguenti esempi di codice: 
+  [Informazioni di base](auto-scaling_example_auto-scaling_Scenario_GroupsAndInstances_section.md) 
+  [Creazione e gestione di un servizio resiliente](auto-scaling_example_cross_ResilientService_section.md) 

------
#### [ .NET ]

**SDK per .NET**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv3/cross-service/ResilientService/AutoScalerActions#code-examples). 
Aggiorna la dimensione minima di un gruppo Auto Scaling automatico a zero, termina tutte le istanze del gruppo ed elimina il gruppo.  

```
    /// <summary>
    /// Try to terminate an instance by its Id.
    /// </summary>
    /// <param name="instanceId">The Id of the instance to terminate.</param>
    /// <returns>Async task.</returns>
    public async Task TryTerminateInstanceById(string instanceId)
    {
        var stopping = false;
        Console.WriteLine($"Stopping {instanceId}...");
        while (!stopping)
        {
            try
            {
                await _amazonAutoScaling.TerminateInstanceInAutoScalingGroupAsync(
                    new TerminateInstanceInAutoScalingGroupRequest()
                    {
                        InstanceId = instanceId,
                        ShouldDecrementDesiredCapacity = false
                    });
                stopping = true;
            }
            catch (ScalingActivityInProgressException)
            {
                Console.WriteLine($"Scaling activity in progress for {instanceId}. Waiting...");
                Thread.Sleep(10000);
            }
        }
    }

    /// <summary>
    /// Tries to delete the EC2 Auto Scaling group. If the group is in use or in progress,
    /// waits and retries until the group is successfully deleted.
    /// </summary>
    /// <param name="groupName">The name of the group to try to delete.</param>
    /// <returns>Async task.</returns>
    public async Task TryDeleteGroupByName(string groupName)
    {
        var stopped = false;
        while (!stopped)
        {
            try
            {
                await _amazonAutoScaling.DeleteAutoScalingGroupAsync(
                    new DeleteAutoScalingGroupRequest()
                    {
                        AutoScalingGroupName = groupName
                    });
                stopped = true;
            }
            catch (Exception e)
                when ((e is ScalingActivityInProgressException)
                      || (e is Amazon.AutoScaling.Model.ResourceInUseException))
            {
                Console.WriteLine($"Some instances are still running. Waiting...");
                Thread.Sleep(10000);
            }
        }
    }

    /// <summary>
    /// Terminate instances and delete the Auto Scaling group by name.
    /// </summary>
    /// <param name="groupName">The name of the group to delete.</param>
    /// <returns>Async task.</returns>
    public async Task TerminateAndDeleteAutoScalingGroupWithName(string groupName)
    {
        var describeGroupsResponse = await _amazonAutoScaling.DescribeAutoScalingGroupsAsync(
            new DescribeAutoScalingGroupsRequest()
            {
                AutoScalingGroupNames = new List<string>() { groupName }
            });
        if (describeGroupsResponse.AutoScalingGroups.Any())
        {
            // Update the size to 0.
            await _amazonAutoScaling.UpdateAutoScalingGroupAsync(
                new UpdateAutoScalingGroupRequest()
                {
                    AutoScalingGroupName = groupName,
                    MinSize = 0
                });
            var group = describeGroupsResponse.AutoScalingGroups[0];
            foreach (var instance in group.Instances)
            {
                await TryTerminateInstanceById(instance.InstanceId);
            }

            await TryDeleteGroupByName(groupName);
        }
        else
        {
            Console.WriteLine($"No groups found with name {groupName}.");
        }
    }
```

```
    /// <summary>
    /// Delete an Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name of the Amazon EC2 Auto Scaling group.</param>
    /// <returns>A Boolean value indicating the success of the action.</returns>
    public async Task<bool> DeleteAutoScalingGroupAsync(
        string groupName)
    {
        var deleteAutoScalingGroupRequest = new DeleteAutoScalingGroupRequest
        {
            AutoScalingGroupName = groupName,
            ForceDelete = true,
        };

        var response = await _amazonAutoScaling.DeleteAutoScalingGroupAsync(deleteAutoScalingGroupRequest);
        if (response.HttpStatusCode == System.Net.HttpStatusCode.OK)
        {
            Console.WriteLine($"You successfully deleted {groupName}");
            return true;
        }

        Console.WriteLine($"Couldn't delete {groupName}.");
        return false;
    }
```
+  Per i dettagli sull'API, consulta la [DeleteAutoScalingGroup](https://docs.aws.amazon.com/goto/DotNetSDKV3/autoscaling-2011-01-01/DeleteAutoScalingGroup)sezione *AWS SDK per .NET API Reference*. 

------
#### [ C\$1\$1 ]

**SDK per C\$1\$1**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/autoscaling#code-examples). 

```
        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

    Aws::AutoScaling::AutoScalingClient autoScalingClient(clientConfig);

            Aws::AutoScaling::Model::DeleteAutoScalingGroupRequest request;
            request.SetAutoScalingGroupName(groupName);

            Aws::AutoScaling::Model::DeleteAutoScalingGroupOutcome outcome =
                    autoScalingClient.DeleteAutoScalingGroup(request);

            if (outcome.IsSuccess()) {
                std::cout << "Auto Scaling group '" << groupName << "' was deleted."
                          << std::endl;
            }
            else {
                std::cerr << "Error with AutoScaling::DeleteAutoScalingGroup. "
                          << outcome.GetError().GetMessage()
                          << std::endl;
                result = false;
            }
        }
```
+  Per i dettagli sull'API, [DeleteAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/DeleteAutoScalingGroup)consulta *AWS SDK per C\$1\$1 API Reference*. 

------
#### [ CLI ]

**AWS CLI**  
**Esempio 1: come eliminare il gruppo Auto Scaling specificato**  
Questo esempio elimina il gruppo Auto Scaling specificato.  

```
aws autoscaling delete-auto-scaling-group \
    --auto-scaling-group-name my-asg
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Eliminazione dell’infrastruttura Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-process-shutdown.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 2: come forzare l’eliminazione del gruppo Auto Scaling specificato**  
Per eliminare il gruppo Auto Scaling senza attendere il termine delle istanze del gruppo, utilizza l’opzione `--force-delete`.  

```
aws autoscaling delete-auto-scaling-group \
    --auto-scaling-group-name my-asg \
    --force-delete
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Eliminazione dell’infrastruttura Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-process-shutdown.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [DeleteAutoScalingGroup AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/delete-auto-scaling-group.html)*Command Reference*. 

------
#### [ Java ]

**SDK per Java 2.x**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/autoscale#code-examples). 

```
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.autoscaling.AutoScalingClient;
import software.amazon.awssdk.services.autoscaling.model.AutoScalingException;
import software.amazon.awssdk.services.autoscaling.model.DeleteAutoScalingGroupRequest;

/**
 * Before running this SDK for Java (v2) code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class DeleteAutoScalingGroup {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                    <groupName>

                Where:
                    groupName - The name of the Auto Scaling group.
                """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String groupName = args[0];
        AutoScalingClient autoScalingClient = AutoScalingClient.builder()
                .region(Region.US_EAST_1)
                .build();

        deleteAutoScalingGroup(autoScalingClient, groupName);
        autoScalingClient.close();
    }

    public static void deleteAutoScalingGroup(AutoScalingClient autoScalingClient, String groupName) {
        try {
            DeleteAutoScalingGroupRequest deleteAutoScalingGroupRequest = DeleteAutoScalingGroupRequest.builder()
                    .autoScalingGroupName(groupName)
                    .forceDelete(true)
                    .build();

            autoScalingClient.deleteAutoScalingGroup(deleteAutoScalingGroupRequest);
            System.out.println("You successfully deleted " + groupName);

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}
```
+  Per i dettagli sull'API, [DeleteAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/DeleteAutoScalingGroup)consulta *AWS SDK for Java 2.x API Reference*. 

------
#### [ Kotlin ]

**SDK per Kotlin**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/autoscale#code-examples). 

```
suspend fun deleteSpecificAutoScalingGroup(groupName: String) {
    val deleteAutoScalingGroupRequest =
        DeleteAutoScalingGroupRequest {
            autoScalingGroupName = groupName
            forceDelete = true
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        autoScalingClient.deleteAutoScalingGroup(deleteAutoScalingGroupRequest)
        println("You successfully deleted $groupName")
    }
}
```
+  Per i dettagli sull'API, [DeleteAutoScalingGroup](https://sdk.amazonaws.com/kotlin/api/latest/index.html)consulta *AWS SDK for Kotlin* API reference. 

------
#### [ PHP ]

**SDK per PHP**  
 C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code/auto-scaling#code-examples). 

```
    public function deleteAutoScalingGroup($autoScalingGroupName)
    {
        return $this->autoScalingClient->deleteAutoScalingGroup([
            'AutoScalingGroupName' => $autoScalingGroupName,
            'ForceDelete' => true,
        ]);
    }
```
+  Per i dettagli sull'API, [DeleteAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/DeleteAutoScalingGroup)consulta *AWS SDK per PHP API Reference*. 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio elimina il gruppo Auto Scaling specificato se non include istanze in esecuzione. Prima di procedere con l’operazione, viene richiesta una conferma.**  

```
Remove-ASAutoScalingGroup -AutoScalingGroupName my-asg
```
**Output:**  

```
Confirm
Are you sure you want to perform this action?
Performing operation "Remove-ASAutoScalingGroup (DeleteAutoScalingGroup)" on Target "my-asg".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):
```
**Esempio 2: se si specifica il parametro Force, non viene richiesta la conferma per continuare l’operazione.**  

```
Remove-ASAutoScalingGroup -AutoScalingGroupName my-asg -Force
```
**Esempio 3: questo esempio elimina il gruppo Auto Scaling specificato e termina qualsiasi istanza in esecuzione in esso contenuta.**  

```
Remove-ASAutoScalingGroup -AutoScalingGroupName my-asg -ForceDelete $true -Force
```
+  Per i dettagli sull'API, vedere [DeleteAutoScalingGroup](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio elimina il gruppo Auto Scaling specificato se non include istanze in esecuzione. Prima di procedere con l’operazione, viene richiesta una conferma.**  

```
Remove-ASAutoScalingGroup -AutoScalingGroupName my-asg
```
**Output:**  

```
Confirm
Are you sure you want to perform this action?
Performing operation "Remove-ASAutoScalingGroup (DeleteAutoScalingGroup)" on Target "my-asg".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):
```
**Esempio 2: se si specifica il parametro Force, non viene richiesta la conferma per continuare l’operazione.**  

```
Remove-ASAutoScalingGroup -AutoScalingGroupName my-asg -Force
```
**Esempio 3: questo esempio elimina il gruppo Auto Scaling specificato e termina qualsiasi istanza in esecuzione in esso contenuta.**  

```
Remove-ASAutoScalingGroup -AutoScalingGroupName my-asg -ForceDelete $true -Force
```
+  Per i dettagli sull'API, vedere [DeleteAutoScalingGroup](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------
#### [ Python ]

**SDK per Python (Boto3)**  
 C'è altro su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/auto-scaling#code-examples). 
Aggiorna la dimensione minima di un gruppo Auto Scaling automatico a zero, termina tutte le istanze del gruppo ed elimina il gruppo.  

```
class AutoScalingWrapper:
    """
    Encapsulates Amazon EC2 Auto Scaling and EC2 management actions.
    """

    def __init__(
        self,
        resource_prefix: str,
        inst_type: str,
        ami_param: str,
        autoscaling_client: boto3.client,
        ec2_client: boto3.client,
        ssm_client: boto3.client,
        iam_client: boto3.client,
    ):
        """
        Initializes the AutoScaler class with the necessary parameters.

        :param resource_prefix: The prefix for naming AWS resources that are created by this class.
        :param inst_type: The type of EC2 instance to create, such as t3.micro.
        :param ami_param: The Systems Manager parameter used to look up the AMI that is created.
        :param autoscaling_client: A Boto3 EC2 Auto Scaling client.
        :param ec2_client: A Boto3 EC2 client.
        :param ssm_client: A Boto3 Systems Manager client.
        :param iam_client: A Boto3 IAM client.
        """
        self.inst_type = inst_type
        self.ami_param = ami_param
        self.autoscaling_client = autoscaling_client
        self.ec2_client = ec2_client
        self.ssm_client = ssm_client
        self.iam_client = iam_client
        sts_client = boto3.client("sts")
        self.account_id = sts_client.get_caller_identity()["Account"]

        self.key_pair_name = f"{resource_prefix}-key-pair"
        self.launch_template_name = f"{resource_prefix}-template-"
        self.group_name = f"{resource_prefix}-group"

        # Happy path
        self.instance_policy_name = f"{resource_prefix}-pol"
        self.instance_role_name = f"{resource_prefix}-role"
        self.instance_profile_name = f"{resource_prefix}-prof"

        # Failure mode
        self.bad_creds_policy_name = f"{resource_prefix}-bc-pol"
        self.bad_creds_role_name = f"{resource_prefix}-bc-role"
        self.bad_creds_profile_name = f"{resource_prefix}-bc-prof"


    def delete_autoscaling_group(self, group_name: str) -> None:
        """
        Terminates all instances in the group, then deletes the EC2 Auto Scaling group.

        :param group_name: The name of the group to delete.
        """
        try:
            response = self.autoscaling_client.describe_auto_scaling_groups(
                AutoScalingGroupNames=[group_name]
            )
            groups = response.get("AutoScalingGroups", [])
            if len(groups) > 0:
                self.autoscaling_client.update_auto_scaling_group(
                    AutoScalingGroupName=group_name, MinSize=0
                )
                instance_ids = [inst["InstanceId"] for inst in groups[0]["Instances"]]
                for inst_id in instance_ids:
                    self.terminate_instance(inst_id)

                # Wait for all instances to be terminated
                if instance_ids:
                    waiter = self.ec2_client.get_waiter("instance_terminated")
                    log.info("Waiting for all instances to be terminated...")
                    waiter.wait(InstanceIds=instance_ids)
                    log.info("All instances have been terminated.")
            else:
                log.info(f"No groups found named '{group_name}'! Nothing to do.")
        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            log.error(f"Failed to delete Auto Scaling group '{group_name}'.")
            if error_code == "ScalingActivityInProgressFault":
                log.error(
                    "Scaling activity is currently in progress. "
                    "Wait for the scaling activity to complete before attempting to delete the group again."
                )
            elif error_code == "ResourceContentionFault":
                log.error(
                    "The request failed due to a resource contention issue. "
                    "Ensure that no conflicting operations are being performed on the group."
                )
            log.error(f"Full error:\n\t{err}")
```
+  Per i dettagli sull'API, consulta [DeleteAutoScalingGroup AWS](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/DeleteAutoScalingGroup)*SDK for Python (Boto3) API Reference*. 

------
#### [ Rust ]

**SDK per Rust**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/rustv1/examples/auto-scaling#code-examples). 

```
async fn delete_group(client: &Client, name: &str, force: bool) -> Result<(), Error> {
    client
        .delete_auto_scaling_group()
        .auto_scaling_group_name(name)
        .set_force_delete(if force { Some(true) } else { None })
        .send()
        .await?;

    println!("Deleted Auto Scaling group");

    Ok(())
}
```
+  Per i dettagli sulle API, consulta il *riferimento [DeleteAutoScalingGroup](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.delete_auto_scaling_group)all'API AWS SDK for Rust*. 

------
#### [ SAP ABAP ]

**SDK per SAP ABAP**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/sap-abap/services/asc#code-examples). 

```
    " Example: iv_group_name = 'my-auto-scaling-group'
    
    TRY.
        ao_asc->deleteautoscalinggroup(
          iv_autoscalinggroupname = iv_group_name ).

        " Wait for the group to be deleted (simplified - in production use proper polling)
        WAIT UP TO 10 SECONDS.

        MESSAGE 'Auto Scaling group deleted successfully' TYPE 'I'.

      CATCH /aws1/cx_ascscaactivityinprg00 INTO DATA(lo_activity_in_progress).
        RAISE EXCEPTION lo_activity_in_progress.
      CATCH /aws1/cx_ascresourceinusefault INTO DATA(lo_resource_in_use).
        RAISE EXCEPTION lo_resource_in_use.
      CATCH /aws1/cx_rt_generic INTO DATA(lo_generic_exception).
        RAISE EXCEPTION lo_generic_exception.
    ENDTRY.
```
+  Per i dettagli sulle API, [DeleteAutoScalingGroup](https://docs.aws.amazon.com/sdk-for-sap-abap/v1/api/latest/index.html)consulta *AWS SDK for SAP ABAP* API reference. 

------

# Utilizzare `DeleteLaunchConfiguration` con una CLI
<a name="auto-scaling_example_auto-scaling_DeleteLaunchConfiguration_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DeleteLaunchConfiguration`.

------
#### [ CLI ]

**AWS CLI**  
**Come eliminare la configurazione di avvio**  
Questo esempio elimina la configurazione di avvio specificata.  

```
aws autoscaling delete-launch-configuration \
    --launch-configuration-name my-launch-config
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Eliminazione dell’infrastruttura Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-process-shutdown.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [DeleteLaunchConfiguration AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/delete-launch-configuration.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio elimina la configurazione di avvio specificata se non è collegata a un gruppo Auto Scaling. Prima di procedere con l’operazione, viene richiesta una conferma.**  

```
Remove-ASLaunchConfiguration -LaunchConfigurationName my-lc
```
**Output:**  

```
Confirm
Are you sure you want to perform this action?
Performing operation "Remove-ASLaunchConfiguration (DeleteLaunchConfiguration)" on Target "my-lc".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):
```
**Esempio 2: se si specifica il parametro Force, non viene richiesta la conferma per continuare l’operazione.**  

```
Remove-ASLaunchConfiguration -LaunchConfigurationName my-lc -Force
```
+  Per i dettagli sull'API, vedere [DeleteLaunchConfiguration](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio elimina la configurazione di avvio specificata se non è collegata a un gruppo Auto Scaling. Prima di procedere con l’operazione, viene richiesta una conferma.**  

```
Remove-ASLaunchConfiguration -LaunchConfigurationName my-lc
```
**Output:**  

```
Confirm
Are you sure you want to perform this action?
Performing operation "Remove-ASLaunchConfiguration (DeleteLaunchConfiguration)" on Target "my-lc".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):
```
**Esempio 2: se si specifica il parametro Force, non viene richiesta la conferma per continuare l’operazione.**  

```
Remove-ASLaunchConfiguration -LaunchConfigurationName my-lc -Force
```
+  Per i dettagli sull'API, vedere [DeleteLaunchConfiguration](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DeleteLifecycleHook` con una CLI
<a name="auto-scaling_example_auto-scaling_DeleteLifecycleHook_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DeleteLifecycleHook`.

------
#### [ CLI ]

**AWS CLI**  
**Come eliminare un hook del ciclo di vita**  
Questo esempio elimina l’hook del ciclo di vita specificato.  

```
aws autoscaling delete-lifecycle-hook \
    --lifecycle-hook-name my-lifecycle-hook \
    --auto-scaling-group-name my-asg
```
Questo comando non produce alcun output.  
+  Per i dettagli sull'API, consulta [DeleteLifecycleHook AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/delete-lifecycle-hook.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio elimina l’hook del ciclo di vita specificato del gruppo Auto Scaling specificato. Prima di procedere con l’operazione, viene richiesta una conferma.**  

```
Remove-ASLifecycleHook -AutoScalingGroupName my-asg -LifecycleHookName myLifecycleHook
```
**Output:**  

```
Confirm
Are you sure you want to perform this action?
Performing operation "Remove-ASLifecycleHook (DeleteLifecycleHook)" on Target "myLifecycleHook".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):
```
**Esempio 2: se si specifica il parametro Force, non viene richiesta la conferma per continuare l’operazione.**  

```
Remove-ASLifecycleHook -AutoScalingGroupName my-asg -LifecycleHookName myLifecycleHook -Force
```
+  Per i dettagli sull'API, vedere [DeleteLifecycleHook](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio elimina l’hook del ciclo di vita specificato del gruppo Auto Scaling specificato. Prima di procedere con l’operazione, viene richiesta una conferma.**  

```
Remove-ASLifecycleHook -AutoScalingGroupName my-asg -LifecycleHookName myLifecycleHook
```
**Output:**  

```
Confirm
Are you sure you want to perform this action?
Performing operation "Remove-ASLifecycleHook (DeleteLifecycleHook)" on Target "myLifecycleHook".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):
```
**Esempio 2: se si specifica il parametro Force, non viene richiesta la conferma per continuare l’operazione.**  

```
Remove-ASLifecycleHook -AutoScalingGroupName my-asg -LifecycleHookName myLifecycleHook -Force
```
+  Per i dettagli sull'API, vedere [DeleteLifecycleHook](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DeleteNotificationConfiguration` con una CLI
<a name="auto-scaling_example_auto-scaling_DeleteNotificationConfiguration_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DeleteNotificationConfiguration`.

------
#### [ CLI ]

**AWS CLI**  
**Come eliminare una notifica di Auto Scaling**  
Questo esempio elimina la notifica specificata dal gruppo Auto Scaling specificato.  

```
aws autoscaling delete-notification-configuration \
    --auto-scaling-group-name my-asg \
    --topic-arn arn:aws:sns:us-west-2:123456789012:my-sns-topic
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Eliminare la configurazione di notifica](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ASGettingNotifications.html#delete-settingupnotifications) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [DeleteNotificationConfiguration AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/delete-notification-configuration.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio elimina l’azione di notifica specificata. Prima di procedere con l’operazione, viene richiesta una conferma.**  

```
Remove-ASNotificationConfiguration -AutoScalingGroupName my-asg -TopicARN "arn:aws:sns:us-west-2:123456789012:my-topic"
```
**Output:**  

```
Confirm
Are you sure you want to perform this action?
Performing operation "Remove-ASNotificationConfiguration (DeleteNotificationConfiguration)" on Target
"arn:aws:sns:us-west-2:123456789012:my-topic".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):
```
**Esempio 2: se si specifica il parametro Force, non viene richiesta la conferma per continuare l’operazione.**  

```
Remove-ASNotificationConfiguration -AutoScalingGroupName my-asg -TopicARN "arn:aws:sns:us-west-2:123456789012:my-topic" -Force
```
+  Per i dettagli sull'API, vedere [DeleteNotificationConfiguration](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio elimina l’azione di notifica specificata. Prima di procedere con l’operazione, viene richiesta una conferma.**  

```
Remove-ASNotificationConfiguration -AutoScalingGroupName my-asg -TopicARN "arn:aws:sns:us-west-2:123456789012:my-topic"
```
**Output:**  

```
Confirm
Are you sure you want to perform this action?
Performing operation "Remove-ASNotificationConfiguration (DeleteNotificationConfiguration)" on Target
"arn:aws:sns:us-west-2:123456789012:my-topic".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):
```
**Esempio 2: se si specifica il parametro Force, non viene richiesta la conferma per continuare l’operazione.**  

```
Remove-ASNotificationConfiguration -AutoScalingGroupName my-asg -TopicARN "arn:aws:sns:us-west-2:123456789012:my-topic" -Force
```
+  Per i dettagli sull'API, vedere [DeleteNotificationConfiguration](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DeletePolicy` con una CLI
<a name="auto-scaling_example_auto-scaling_DeletePolicy_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DeletePolicy`.

------
#### [ CLI ]

**AWS CLI**  
**Come eliminare una policy di dimensionamento**  
Questo esempio elimina la policy di dimensionamento specificata.  

```
aws autoscaling delete-policy \
    --auto-scaling-group-name my-asg \
    --policy-name alb1000-target-tracking-scaling-policy
```
Questo comando non produce alcun output.  
+  Per i dettagli sull'API, consulta [DeletePolicy AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/delete-policy.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio elimina la policy specificata del gruppo Auto Scaling specificato. Prima di procedere con l’operazione, viene richiesta una conferma.**  

```
Remove-ASPolicy -AutoScalingGroupName my-asg -PolicyName myScaleInPolicy
```
**Output:**  

```
Confirm
Are you sure you want to perform this action?
Performing operation "Remove-ASPolicy (DeletePolicy)" on Target "myScaleInPolicy".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):
```
**Esempio 2: se si specifica il parametro Force, non viene richiesta la conferma per continuare l’operazione.**  

```
Remove-ASPolicy -AutoScalingGroupName my-asg -PolicyName myScaleInPolicy -Force
```
+  Per i dettagli sull'API, vedere [DeletePolicy](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio elimina la policy specificata del gruppo Auto Scaling specificato. Prima di procedere con l’operazione, viene richiesta una conferma.**  

```
Remove-ASPolicy -AutoScalingGroupName my-asg -PolicyName myScaleInPolicy
```
**Output:**  

```
Confirm
Are you sure you want to perform this action?
Performing operation "Remove-ASPolicy (DeletePolicy)" on Target "myScaleInPolicy".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):
```
**Esempio 2: se si specifica il parametro Force, non viene richiesta la conferma per continuare l’operazione.**  

```
Remove-ASPolicy -AutoScalingGroupName my-asg -PolicyName myScaleInPolicy -Force
```
+  Per i dettagli sull'API, vedere [DeletePolicy](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DeleteScheduledAction` con una CLI
<a name="auto-scaling_example_auto-scaling_DeleteScheduledAction_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DeleteScheduledAction`.

------
#### [ CLI ]

**AWS CLI**  
**Come eliminare un’azione pianificata da un gruppo Auto Scaling**  
Questo esempio elimina l’azione pianificata specificata dal gruppo Auto Scaling specificato.  

```
aws autoscaling delete-scheduled-action \
    --auto-scaling-group-name my-asg \
    --scheduled-action-name my-scheduled-action
```
Questo comando non produce alcun output.  
+  Per i dettagli sull'API, consulta [DeleteScheduledAction AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/delete-scheduled-action.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio elimina l’azione pianificata specificata per il gruppo Auto Scaling specificato. Prima di procedere con l’operazione, viene richiesta una conferma.**  

```
Remove-ASScheduledAction -AutoScalingGroupName my-asg -ScheduledAction "myScheduledAction"
```
**Output:**  

```
Confirm
Are you sure you want to perform this action?
Performing operation "Remove-ASScheduledAction (DeleteScheduledAction)" on Target "myScheduledAction".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):
```
**Esempio 2: se si specifica il parametro Force, non viene richiesta la conferma per continuare l’operazione.**  

```
Remove-ASScheduledAction -AutoScalingGroupName my-asg -ScheduledAction "myScheduledAction" -Force
```
+  Per i dettagli sull'API, vedere [DeleteScheduledAction](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio elimina l’azione pianificata specificata per il gruppo Auto Scaling specificato. Prima di procedere con l’operazione, viene richiesta una conferma.**  

```
Remove-ASScheduledAction -AutoScalingGroupName my-asg -ScheduledAction "myScheduledAction"
```
**Output:**  

```
Confirm
Are you sure you want to perform this action?
Performing operation "Remove-ASScheduledAction (DeleteScheduledAction)" on Target "myScheduledAction".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):
```
**Esempio 2: se si specifica il parametro Force, non viene richiesta la conferma per continuare l’operazione.**  

```
Remove-ASScheduledAction -AutoScalingGroupName my-asg -ScheduledAction "myScheduledAction" -Force
```
+  Per i dettagli sull'API, vedere [DeleteScheduledAction](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DeleteTags` con una CLI
<a name="auto-scaling_example_auto-scaling_DeleteTags_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DeleteTags`.

------
#### [ CLI ]

**AWS CLI**  
**Come eliminare un tag da un gruppo Auto Scaling**  
Questo esempio elimina il tag specificato dal gruppo Auto Scaling specificato.  

```
aws autoscaling delete-tags \
    --tags ResourceId=my-asg,ResourceType=auto-scaling-group,Key=Dept,Value=Research
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Tagging di gruppi e istanze Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-tagging.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [DeleteTags AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/delete-tags.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio rimuove il tag specificato dal gruppo Auto Scaling specificato. Prima di procedere con l’operazione, viene richiesta una conferma. La sintassi utilizzata in questo esempio richiede la PowerShell versione 3 o successiva.**  

```
Remove-ASTag -Tag @( @{ResourceType="auto-scaling-group"; ResourceId="my-asg"; Key="myTag" } )
```
**Output:**  

```
Confirm
Are you sure you want to perform this action?
Performing the operation "Remove-ASTag (DeleteTags)" on target "Amazon.AutoScaling.Model.Tag".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):
```
**Esempio 2: se si specifica il parametro Force, non viene richiesta la conferma per continuare l’operazione.**  

```
Remove-ASTag -Tag @( @{ResourceType="auto-scaling-group"; ResourceId="my-asg"; Key="myTag" } ) -Force
```
**Esempio 3: con PowerShell versione 2, è necessario utilizzare New-Object per creare il tag per il parametro Tag.**  

```
$tag = New-Object Amazon.AutoScaling.Model.Tag
$tag.ResourceType = "auto-scaling-group"
$tag.ResourceId = "my-asg"
$tag.Key = "myTag"
Remove-ASTag -Tag $tag -Force
```
+  Per i dettagli sull'API, vedere [DeleteTags](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio rimuove il tag specificato dal gruppo Auto Scaling specificato. Prima di procedere con l’operazione, viene richiesta una conferma. La sintassi utilizzata in questo esempio richiede la PowerShell versione 3 o successiva.**  

```
Remove-ASTag -Tag @( @{ResourceType="auto-scaling-group"; ResourceId="my-asg"; Key="myTag" } )
```
**Output:**  

```
Confirm
Are you sure you want to perform this action?
Performing the operation "Remove-ASTag (DeleteTags)" on target "Amazon.AutoScaling.Model.Tag".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):
```
**Esempio 2: se si specifica il parametro Force, non viene richiesta la conferma per continuare l’operazione.**  

```
Remove-ASTag -Tag @( @{ResourceType="auto-scaling-group"; ResourceId="my-asg"; Key="myTag" } ) -Force
```
**Esempio 3: con PowerShell versione 2, è necessario utilizzare New-Object per creare il tag per il parametro Tag.**  

```
$tag = New-Object Amazon.AutoScaling.Model.Tag
$tag.ResourceType = "auto-scaling-group"
$tag.ResourceId = "my-asg"
$tag.Key = "myTag"
Remove-ASTag -Tag $tag -Force
```
+  Per i dettagli sull'API, vedere [DeleteTags](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DescribeAccountLimits` con una CLI
<a name="auto-scaling_example_auto-scaling_DescribeAccountLimits_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeAccountLimits`.

------
#### [ CLI ]

**AWS CLI**  
**Come descrivere i limiti dell’account Amazon EC2 Auto Scaling**  
Questo esempio descrive i limiti AWS di Amazon EC2 Auto Scaling per il tuo account.  

```
aws autoscaling describe-account-limits
```
Output:  

```
{
    "NumberOfLaunchConfigurations": 5,
    "MaxNumberOfLaunchConfigurations": 100,
    "NumberOfAutoScalingGroups": 3,
    "MaxNumberOfAutoScalingGroups": 20
}
```
Per ulteriori informazioni, consulta [Service Quotas di Amazon EC2 Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-account-limits.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta *AWS CLI Command [DescribeAccountLimits](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-account-limits.html)Reference*. 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio descrive i limiti delle risorse Auto Scaling per il tuo AWS account.**  

```
Get-ASAccountLimit
```
**Output:**  

```
MaxNumberOfAutoScalingGroups    : 20
MaxNumberOfLaunchConfigurations : 100
```
+  Per i dettagli sull'API, vedere [DescribeAccountLimits](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio descrive i limiti delle risorse Auto Scaling per il tuo AWS account.**  

```
Get-ASAccountLimit
```
**Output:**  

```
MaxNumberOfAutoScalingGroups    : 20
MaxNumberOfLaunchConfigurations : 100
```
+  Per i dettagli sull'API, vedere [DescribeAccountLimits](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DescribeAdjustmentTypes` con una CLI
<a name="auto-scaling_example_auto-scaling_DescribeAdjustmentTypes_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeAdjustmentTypes`.

------
#### [ CLI ]

**AWS CLI**  
**Come descrivere i tipi di regolazione del dimensionamento**  
Questo esempio descrive i tipi di regolazione disponibili.  

```
aws autoscaling describe-adjustment-types
```
Output:  

```
{
    "AdjustmentTypes": [
        {
            "AdjustmentType": "ChangeInCapacity"
        },
        {
            "AdjustmentType": "ExactCapacity"
        },
        {
            "AdjustmentType": "PercentChangeInCapacity"
        }
    ]
}
```
Per ulteriori informazioni, consulta [Tipi di dimensionamento automatico](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-scaling-simple-step.html#as-scaling-adjustment) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [DescribeAdjustmentTypes AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-adjustment-types.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio descrive i tipi di regolazione supportati da Auto Scaling.**  

```
Get-ASAdjustmentType
```
**Output:**  

```
Type
----
ChangeInCapacity
ExactCapacity
PercentChangeInCapacity
```
+  Per i dettagli sull'API, vedere [DescribeAdjustmentTypes](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio descrive i tipi di regolazione supportati da Auto Scaling.**  

```
Get-ASAdjustmentType
```
**Output:**  

```
Type
----
ChangeInCapacity
ExactCapacity
PercentChangeInCapacity
```
+  Per i dettagli sull'API, vedere [DescribeAdjustmentTypes](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzo `DescribeAutoScalingGroups` con un AWS SDK o una CLI
<a name="auto-scaling_example_auto-scaling_DescribeAutoScalingGroups_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeAutoScalingGroups`.

Gli esempi di operazioni sono estratti di codice da programmi più grandi e devono essere eseguiti nel contesto. È possibile visualizzare questa operazione nel contesto nei seguenti esempi di codice: 
+  [Informazioni di base](auto-scaling_example_auto-scaling_Scenario_GroupsAndInstances_section.md) 
+  [Creazione e gestione di un servizio resiliente](auto-scaling_example_cross_ResilientService_section.md) 

------
#### [ .NET ]

**SDK per .NET (v4)**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv4/AutoScaling#code-examples). 

```
    /// <summary>
    /// Get data about the instances in an Amazon EC2 Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name of the Amazon EC2 Auto Scaling group.</param>
    /// <returns>A list of Amazon EC2 Auto Scaling details.</returns>
    public async Task<List<AutoScalingInstanceDetails>> DescribeAutoScalingInstancesAsync(
        string groupName)
    {
        var groups = await DescribeAutoScalingGroupsAsync(groupName);
        var instanceIds = new List<string>();
        var instanceDetails = new List<AutoScalingInstanceDetails>();
        if (groups != null)
        {
            groups.ForEach(group =>
            {
                if (group.AutoScalingGroupName == groupName && group.Instances != null)
                {
                    group.Instances.ForEach(instance =>
                    {
                        instanceIds.Add(instance.InstanceId);
                    });
                }
            });

            var scalingGroupsRequest = new DescribeAutoScalingInstancesRequest
            {
                MaxRecords = 10,
                InstanceIds = instanceIds,
            };

            var response =
                await _amazonAutoScaling.DescribeAutoScalingInstancesAsync(
                    scalingGroupsRequest);
            if (response.AutoScalingInstances != null)
            {
                instanceDetails = response.AutoScalingInstances;
            }
        }

        return instanceDetails;
    }
```
+  Per i dettagli sull'API, [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/DescribeAutoScalingGroups)consulta *AWS SDK per .NET API Reference*. 

------
#### [ C\$1\$1 ]

**SDK per C\$1\$1**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/autoscaling#code-examples). 

```
        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

    Aws::AutoScaling::AutoScalingClient autoScalingClient(clientConfig);

    Aws::AutoScaling::Model::DescribeAutoScalingGroupsRequest request;
    Aws::Vector<Aws::String> groupNames;
    groupNames.push_back(groupName);
    request.SetAutoScalingGroupNames(groupNames);

    Aws::AutoScaling::Model::DescribeAutoScalingGroupsOutcome outcome =
            client.DescribeAutoScalingGroups(request);

    if (outcome.IsSuccess()) {
        autoScalingGroup = outcome.GetResult().GetAutoScalingGroups();
    }
    else {
        std::cerr << "Error with AutoScaling::DescribeAutoScalingGroups. "
                  << outcome.GetError().GetMessage()
                  << std::endl;
    }
```
+  Per i dettagli sull'API, [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/DescribeAutoScalingGroups)consulta *AWS SDK per C\$1\$1 API Reference*. 

------
#### [ CLI ]

**AWS CLI**  
**Esempio 1: come descrivere il gruppo Auto Scaling specificato**  
Questo esempio descrive il gruppo Auto Scaling specificato.  

```
aws autoscaling describe-auto-scaling-groups \
    --auto-scaling-group-names my-asg
```
Output:  

```
{
    "AutoScalingGroups": [
        {
            "AutoScalingGroupName": "my-asg",
            "AutoScalingGroupARN": "arn:aws:autoscaling:us-west-2:123456789012:autoScalingGroup:930d940e-891e-4781-a11a-7b0acd480f03:autoScalingGroupName/my-asg",
            "LaunchTemplate": {
                "LaunchTemplateName": "my-launch-template",
                "Version": "1",
                "LaunchTemplateId": "lt-1234567890abcde12"
            },
            "MinSize": 0,
            "MaxSize": 1,
            "DesiredCapacity": 1,
            "DefaultCooldown": 300,
            "AvailabilityZones": [
                "us-west-2a",
                "us-west-2b",
                "us-west-2c"
            ],
            "LoadBalancerNames": [],
            "TargetGroupARNs": [],
            "HealthCheckType": "EC2",
            "HealthCheckGracePeriod": 0,
            "Instances": [
                {
                    "InstanceId": "i-06905f55584de02da",
                    "InstanceType": "t2.micro",
                    "AvailabilityZone": "us-west-2a",
                    "HealthStatus": "Healthy",
                    "LifecycleState": "InService",
                    "ProtectedFromScaleIn": false,
                    "LaunchTemplate": {
                        "LaunchTemplateName": "my-launch-template",
                        "Version": "1",
                        "LaunchTemplateId": "lt-1234567890abcde12"
                    }
                }
            ],
            "CreatedTime": "2023-10-28T02:39:22.152Z",
            "SuspendedProcesses": [],
            "VPCZoneIdentifier": "subnet-5ea0c127,subnet-6194ea3b,subnet-c934b782",
            "EnabledMetrics": [],
            "Tags": [],
            "TerminationPolicies": [
                "Default"
            ],
            "NewInstancesProtectedFromScaleIn": false,
            "ServiceLinkedRoleARN":"arn",
            "TrafficSources": []
        }
    ]
}
```
**Esempio 2: come descrivere i primi 100 gruppi Auto Scaling specificati**  
Questo esempio descrive i gruppi Auto Scaling specificati. Consente di specificare fino a 100 nomi di gruppo.  

```
aws autoscaling describe-auto-scaling-groups \
    --max-items 100 \
    --auto-scaling-group-names "group1" "group2" "group3" "group4"
```
Vedi l’esempio 1 per un output di esempio.  
**Esempio 3: come descrivere un gruppo Auto Scaling nella Regione specificata**  
Questo esempio descrive fino a un massimo di 75 gruppi Auto Scaling nella Regione specificata.  

```
aws autoscaling describe-auto-scaling-groups \
    --max-items 75 \
    --region us-east-1
```
Vedi l’esempio 1 per un output di esempio.  
**Esempio 4: come descrivere il numero specificato di gruppi Auto Scaling**  
Per restituire un numero specifico di gruppi Auto Scaling, utilizza l’opzione `--max-items`.  

```
aws autoscaling describe-auto-scaling-groups \
    --max-items 1
```
Vedi l’esempio 1 per un output di esempio.  
Se l’output include un campo `NextToken`, significa che sono presenti più gruppi. Per ottenere i gruppi aggiuntivi, utilizza il valore di questo campo con l’opzione `--starting-token` in una chiamata successiva come descritto di seguito.  

```
aws autoscaling describe-auto-scaling-groups \
    --starting-token Z3M3LMPEXAMPLE
```
Vedi l’esempio 1 per un output di esempio.  
**Esempio 5: come descrivere i gruppi Auto Scaling che utilizzano configurazioni di avvio**  
Questo esempio utilizza l’opzione `--query` per descrivere i gruppi Auto Scaling che utilizzano configurazioni di avvio.  

```
aws autoscaling describe-auto-scaling-groups \
    --query 'AutoScalingGroups[?LaunchConfigurationName!=`null`]'
```
Output:  

```
[
    {
        "AutoScalingGroupName": "my-asg",
        "AutoScalingGroupARN": "arn:aws:autoscaling:us-west-2:123456789012:autoScalingGroup:930d940e-891e-4781-a11a-7b0acd480f03:autoScalingGroupName/my-asg",
        "LaunchConfigurationName": "my-lc",
        "MinSize": 0,
        "MaxSize": 1,
        "DesiredCapacity": 1,
        "DefaultCooldown": 300,
        "AvailabilityZones": [
            "us-west-2a",
            "us-west-2b",
            "us-west-2c"
        ],
        "LoadBalancerNames": [],
        "TargetGroupARNs": [],
        "HealthCheckType": "EC2",
        "HealthCheckGracePeriod": 0,
        "Instances": [
            {
                "InstanceId": "i-088c57934a6449037",
                "InstanceType": "t2.micro",
                "AvailabilityZone": "us-west-2c",
                "HealthStatus": "Healthy",
                "LifecycleState": "InService",
                "LaunchConfigurationName": "my-lc",
                "ProtectedFromScaleIn": false
            }
        ],
        "CreatedTime": "2023-10-28T02:39:22.152Z",
        "SuspendedProcesses": [],
        "VPCZoneIdentifier": "subnet-5ea0c127,subnet-6194ea3b,subnet-c934b782",
        "EnabledMetrics": [],
        "Tags": [],
        "TerminationPolicies": [
            "Default"
        ],
        "NewInstancesProtectedFromScaleIn": false,
        "ServiceLinkedRoleARN":"arn",
        "TrafficSources": []
    }
]
```
Per ulteriori informazioni, consulta [Filter AWS CLI output](https://docs.aws.amazon.com/cli/latest/userguide/cli-usage-filter.html) nella *AWS Command Line Interface User Guide*.  
+  Per i dettagli sull'API, consulta [DescribeAutoScalingGroups AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-auto-scaling-groups.html)*Command Reference.* 

------
#### [ Java ]

**SDK per Java 2.x**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/autoscale#code-examples). 

```
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.autoscaling.AutoScalingClient;
import software.amazon.awssdk.services.autoscaling.model.AutoScalingException;
import software.amazon.awssdk.services.autoscaling.model.AutoScalingGroup;
import software.amazon.awssdk.services.autoscaling.model.DescribeAutoScalingGroupsResponse;
import software.amazon.awssdk.services.autoscaling.model.DescribeAutoScalingGroupsRequest;
import software.amazon.awssdk.services.autoscaling.model.Instance;
import java.util.List;

/**
 * Before running this SDK for Java (v2) code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class DescribeAutoScalingInstances {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                    <groupName>

                Where:
                    groupName - The name of the Auto Scaling group.
                """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String groupName = args[0];
        AutoScalingClient autoScalingClient = AutoScalingClient.builder()
                .region(Region.US_EAST_1)
                .build();

        String instanceId = getAutoScaling(autoScalingClient, groupName);
        System.out.println(instanceId);
        autoScalingClient.close();
    }

    public static String getAutoScaling(AutoScalingClient autoScalingClient, String groupName) {
        try {
            String instanceId = "";
            DescribeAutoScalingGroupsRequest scalingGroupsRequest = DescribeAutoScalingGroupsRequest.builder()
                    .autoScalingGroupNames(groupName)
                    .build();

            DescribeAutoScalingGroupsResponse response = autoScalingClient
                    .describeAutoScalingGroups(scalingGroupsRequest);
            List<AutoScalingGroup> groups = response.autoScalingGroups();
            for (AutoScalingGroup group : groups) {
                System.out.println("The group name is " + group.autoScalingGroupName());
                System.out.println("The group ARN is " + group.autoScalingGroupARN());

                List<Instance> instances = group.instances();
                for (Instance instance : instances) {
                    instanceId = instance.instanceId();
                }
            }
            return instanceId;
        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
        return "";
    }
}
```
+  Per i dettagli sull'API, [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/DescribeAutoScalingGroups)consulta *AWS SDK for Java 2.x API Reference*. 

------
#### [ Kotlin ]

**SDK per Kotlin**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/autoscale#code-examples). 

```
suspend fun getAutoScalingGroups(groupName: String) {
    val scalingGroupsRequest =
        DescribeAutoScalingGroupsRequest {
            autoScalingGroupNames = listOf(groupName)
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        val response = autoScalingClient.describeAutoScalingGroups(scalingGroupsRequest)
        response.autoScalingGroups?.forEach { group ->
            println("The group name is ${group.autoScalingGroupName}")
            println("The group ARN is ${group.autoScalingGroupArn}")
            group.instances?.forEach { instance ->
                println("The instance id is ${instance.instanceId}")
                println("The lifecycle state is " + instance.lifecycleState)
            }
        }
    }
}
```
+  Per i dettagli sull'API, [DescribeAutoScalingGroups](https://sdk.amazonaws.com/kotlin/api/latest/index.html)consulta *AWS SDK for Kotlin* API reference. 

------
#### [ PHP ]

**SDK per PHP**  
 C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code/auto-scaling#code-examples). 

```
    public function describeAutoScalingGroups($autoScalingGroupNames)
    {
        return $this->autoScalingClient->describeAutoScalingGroups([
            'AutoScalingGroupNames' => $autoScalingGroupNames
        ]);
    }
```
+  Per i dettagli sull'API, [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/DescribeAutoScalingGroups)consulta *AWS SDK per PHP API Reference*. 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio elenca i nomi dei gruppi Auto Scaling.**  

```
Get-ASAutoScalingGroup | format-table -property AutoScalingGroupName
```
**Output:**  

```
AutoScalingGroupName
--------------------
my-asg-1
my-asg-2
my-asg-3
my-asg-4
my-asg-5
my-asg-6
```
**Esempio 2: questo esempio descrive il gruppo Auto Scaling specificato.**  

```
Get-ASAutoScalingGroup -AutoScalingGroupName my-asg-1
```
**Output:**  

```
AutoScalingGroupARN     : arn:aws:autoscaling:us-west-2:123456789012:autoScalingGroup:930d940e-891e-4781-a11a-7b0acd480
                          f03:autoScalingGroupName/my-asg-1
AutoScalingGroupName    : my-asg-1
AvailabilityZones       : {us-west-2b, us-west-2a}
CreatedTime             : 3/1/2015 9:05:31 AM
DefaultCooldown         : 300
DesiredCapacity         : 2
EnabledMetrics          : {}
HealthCheckGracePeriod  : 300
HealthCheckType         : EC2
Instances               : {my-lc}
LaunchConfigurationName : my-lc
LoadBalancerNames       : {}
MaxSize                 : 0
MinSize                 : 0
PlacementGroup          :
Status                  :
SuspendedProcesses      : {}
Tags                    : {}
TerminationPolicies     : {Default}
VPCZoneIdentifier       : subnet-e4f33493,subnet-5264e837
```
**Esempio 3: questo esempio descrive i due gruppi Auto Scaling specificati.**  

```
Get-ASAutoScalingGroup -AutoScalingGroupName @("my-asg-1", "my-asg-2")
```
**Esempio 4: questo esempio descrive le istanze Auto Scaling per il gruppo Auto Scaling specificato.**  

```
(Get-ASAutoScalingGroup -AutoScalingGroupName my-asg-1).Instances
```
**Esempio 5: questo esempio descrive tutti i gruppi Auto Scaling.**  

```
Get-ASAutoScalingGroup
```
**Esempio 6: Questo LaunchTemplate esempio descrive il gruppo Auto Scaling specificato. Questo esempio presuppone che l’opzione “Opzioni di acquisto delle istanze” sia impostata su “Aderisci al modello di avvio”. Nel caso in cui questa opzione sia impostata su «Combina opzioni di acquisto e tipi di istanze», è LaunchTemplate possibile accedervi utilizzando "MixedInstancesPolicy. LaunchTemplate«proprietà.**  

```
(Get-ASAutoScalingGroup -AutoScalingGroupName my-ag-1).LaunchTemplate
```
**Output:**  

```
LaunchTemplateId     LaunchTemplateName   Version
----------------     ------------------   -------
lt-06095fd619cb40371 test-launch-template $Default
```
+  Per i dettagli sull'API, vedere [DescribeAutoScalingGroups](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (V4)*. 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio elenca i nomi dei gruppi Auto Scaling.**  

```
Get-ASAutoScalingGroup | format-table -property AutoScalingGroupName
```
**Output:**  

```
AutoScalingGroupName
--------------------
my-asg-1
my-asg-2
my-asg-3
my-asg-4
my-asg-5
my-asg-6
```
**Esempio 2: questo esempio descrive il gruppo Auto Scaling specificato.**  

```
Get-ASAutoScalingGroup -AutoScalingGroupName my-asg-1
```
**Output:**  

```
AutoScalingGroupARN     : arn:aws:autoscaling:us-west-2:123456789012:autoScalingGroup:930d940e-891e-4781-a11a-7b0acd480
                          f03:autoScalingGroupName/my-asg-1
AutoScalingGroupName    : my-asg-1
AvailabilityZones       : {us-west-2b, us-west-2a}
CreatedTime             : 3/1/2015 9:05:31 AM
DefaultCooldown         : 300
DesiredCapacity         : 2
EnabledMetrics          : {}
HealthCheckGracePeriod  : 300
HealthCheckType         : EC2
Instances               : {my-lc}
LaunchConfigurationName : my-lc
LoadBalancerNames       : {}
MaxSize                 : 0
MinSize                 : 0
PlacementGroup          :
Status                  :
SuspendedProcesses      : {}
Tags                    : {}
TerminationPolicies     : {Default}
VPCZoneIdentifier       : subnet-e4f33493,subnet-5264e837
```
**Esempio 3: questo esempio descrive i due gruppi Auto Scaling specificati.**  

```
Get-ASAutoScalingGroup -AutoScalingGroupName @("my-asg-1", "my-asg-2")
```
**Esempio 4: questo esempio descrive le istanze Auto Scaling per il gruppo Auto Scaling specificato.**  

```
(Get-ASAutoScalingGroup -AutoScalingGroupName my-asg-1).Instances
```
**Esempio 5: questo esempio descrive tutti i gruppi Auto Scaling.**  

```
Get-ASAutoScalingGroup
```
**Esempio 6: Questo LaunchTemplate esempio descrive il gruppo Auto Scaling specificato. Questo esempio presuppone che l’opzione “Opzioni di acquisto delle istanze” sia impostata su “Aderisci al modello di avvio”. Nel caso in cui questa opzione sia impostata su «Combina opzioni di acquisto e tipi di istanze», è LaunchTemplate possibile accedervi utilizzando "MixedInstancesPolicy. LaunchTemplate«proprietà.**  

```
(Get-ASAutoScalingGroup -AutoScalingGroupName my-ag-1).LaunchTemplate
```
**Output:**  

```
LaunchTemplateId     LaunchTemplateName   Version
----------------     ------------------   -------
lt-06095fd619cb40371 test-launch-template $Default
```
+  Per i dettagli sull'API, vedere [DescribeAutoScalingGroups](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (V5)*. 

------
#### [ Python ]

**SDK per Python (Boto3)**  
 C'è altro su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/auto-scaling#code-examples). 

```
class AutoScalingWrapper:
    """Encapsulates Amazon EC2 Auto Scaling actions."""

    def __init__(self, autoscaling_client):
        """
        :param autoscaling_client: A Boto3 Amazon EC2 Auto Scaling client.
        """
        self.autoscaling_client = autoscaling_client


    def describe_group(self, group_name: str) -> Optional[Dict[str, Any]]:
        """
        Gets information about an Auto Scaling group.

        :param group_name: The name of the group to look up.
        :return: A dictionary with information about the group if found, otherwise None.
        :raises ClientError: If there is an error describing the Auto Scaling group.
        """
        try:
            paginator = self.autoscaling_client.get_paginator(
                "describe_auto_scaling_groups"
            )
            response_iterator = paginator.paginate(AutoScalingGroupNames=[group_name])
            groups = []
            for response in response_iterator:
                groups.extend(response.get("AutoScalingGroups", []))

            logger.info(
                f"Successfully retrieved information for Auto Scaling group {group_name}."
            )

        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            logger.error(f"Failed to describe Auto Scaling group {group_name}.")
            if error_code == "ResourceContentionFault":
                logger.error(
                    "There is a conflict with another operation that is modifying the "
                    f"Auto Scaling group '{group_name}' Please try again later."
                )
            logger.error(f"Full error:\n\t{err}")
            raise
        else:
            return groups[0] if len(groups) > 0 else None
```
+  Per i dettagli sull'API, consulta [DescribeAutoScalingGroups AWS](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/DescribeAutoScalingGroups)*SDK for Python (Boto3) API Reference*. 

------
#### [ Rust ]

**SDK per Rust**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/rustv1/examples/auto-scaling#code-examples). 

```
async fn list_groups(client: &Client) -> Result<(), Error> {
    let resp = client.describe_auto_scaling_groups().send().await?;

    println!("Groups:");

    let groups = resp.auto_scaling_groups();

    for group in groups {
        println!(
            "Name:  {}",
            group.auto_scaling_group_name().unwrap_or("Unknown")
        );
        println!(
            "Arn:   {}",
            group.auto_scaling_group_arn().unwrap_or("unknown"),
        );
        println!("Zones: {:?}", group.availability_zones(),);
        println!();
    }

    println!("Found {} group(s)", groups.len());

    Ok(())
}
```
+  Per i dettagli sulle API, consulta il *riferimento [DescribeAutoScalingGroups](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.describe_auto_scaling_groups)all'API AWS SDK for Rust*. 

------
#### [ SAP ABAP ]

**SDK per SAP ABAP**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/sap-abap/services/asc#code-examples). 

```
    DATA lt_group_names TYPE /aws1/cl_ascautoscgroupnames_w=>tt_autoscalinggroupnames.
    DATA lo_group_name TYPE REF TO /aws1/cl_ascautoscgroupnames_w.
    
    " Example: iv_group_name = 'my-auto-scaling-group'
    
    TRY.
        " Build group names parameter
        CREATE OBJECT lo_group_name
          EXPORTING
            iv_value = iv_group_name.
        APPEND lo_group_name TO lt_group_names.

        " Describe the Auto Scaling group
        DATA(lo_output) = ao_asc->describeautoscalinggroups(
          it_autoscalinggroupnames = lt_group_names ).

        " Return the first (and only) group in the result
        DATA(lt_groups) = lo_output->get_autoscalinggroups( ).
        IF lines( lt_groups ) > 0.
          READ TABLE lt_groups INDEX 1 INTO DATA(lo_group).
          oo_output = lo_group.
        ENDIF.

        MESSAGE 'Auto Scaling group information retrieved successfully' TYPE 'I'.

      CATCH /aws1/cx_ascresrccontionfault INTO DATA(lo_contention).
        RAISE EXCEPTION lo_contention.
      CATCH /aws1/cx_rt_generic INTO DATA(lo_generic_exception).
        RAISE EXCEPTION lo_generic_exception.
    ENDTRY.
```
+  Per i dettagli sulle API, [DescribeAutoScalingGroups](https://docs.aws.amazon.com/sdk-for-sap-abap/v1/api/latest/index.html)consulta *AWS SDK for SAP ABAP* API reference. 

------

# Utilizzo `DescribeAutoScalingInstances` con un AWS SDK o una CLI
<a name="auto-scaling_example_auto-scaling_DescribeAutoScalingInstances_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeAutoScalingInstances`.

Gli esempi di operazioni sono estratti di codice da programmi più grandi e devono essere eseguiti nel contesto. È possibile visualizzare questa operazione nel contesto nel seguente esempio di codice: 
+  [Informazioni di base](auto-scaling_example_auto-scaling_Scenario_GroupsAndInstances_section.md) 

------
#### [ .NET ]

**SDK per .NET (v4)**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv4/AutoScaling#code-examples). 

```
    /// <summary>
    /// Get data about the instances in an Amazon EC2 Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name of the Amazon EC2 Auto Scaling group.</param>
    /// <returns>A list of Amazon EC2 Auto Scaling details.</returns>
    public async Task<List<AutoScalingInstanceDetails>> DescribeAutoScalingInstancesAsync(
        string groupName)
    {
        var groups = await DescribeAutoScalingGroupsAsync(groupName);
        var instanceIds = new List<string>();
        var instanceDetails = new List<AutoScalingInstanceDetails>();
        if (groups != null)
        {
            groups.ForEach(group =>
            {
                if (group.AutoScalingGroupName == groupName && group.Instances != null)
                {
                    group.Instances.ForEach(instance =>
                    {
                        instanceIds.Add(instance.InstanceId);
                    });
                }
            });

            var scalingGroupsRequest = new DescribeAutoScalingInstancesRequest
            {
                MaxRecords = 10,
                InstanceIds = instanceIds,
            };

            var response =
                await _amazonAutoScaling.DescribeAutoScalingInstancesAsync(
                    scalingGroupsRequest);
            if (response.AutoScalingInstances != null)
            {
                instanceDetails = response.AutoScalingInstances;
            }
        }

        return instanceDetails;
    }
```
+  Per i dettagli sull'API, [DescribeAutoScalingInstances](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/DescribeAutoScalingInstances)consulta *AWS SDK per .NET API Reference*. 

------
#### [ C\$1\$1 ]

**SDK per C\$1\$1**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/autoscaling#code-examples). 

```
        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

    Aws::AutoScaling::AutoScalingClient autoScalingClient(clientConfig);

        Aws::AutoScaling::Model::DescribeAutoScalingInstancesRequest request;
        request.SetInstanceIds(instanceIDs);

        Aws::AutoScaling::Model::DescribeAutoScalingInstancesOutcome outcome =
                client.DescribeAutoScalingInstances(request);

        if (outcome.IsSuccess()) {
            const Aws::Vector<Aws::AutoScaling::Model::AutoScalingInstanceDetails> &instancesDetails =
                    outcome.GetResult().GetAutoScalingInstances();

        }
        else {
            std::cerr << "Error with AutoScaling::DescribeAutoScalingInstances. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
            return false;
        }
```
+  Per i dettagli sull'API, [DescribeAutoScalingInstances](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/DescribeAutoScalingInstances)consulta *AWS SDK per C\$1\$1 API Reference*. 

------
#### [ CLI ]

**AWS CLI**  
**Esempio 1: come descrivere una o più istanze**  
Questo esempio descrive l’istanza specificata.  

```
aws autoscaling describe-auto-scaling-instances \
    --instance-ids i-06905f55584de02da
```
Output:  

```
{
    "AutoScalingInstances": [
        {
            "InstanceId": "i-06905f55584de02da",
            "InstanceType": "t2.micro",
            "AutoScalingGroupName": "my-asg",
            "AvailabilityZone": "us-west-2b",
            "LifecycleState": "InService",
            "HealthStatus": "HEALTHY",
            "ProtectedFromScaleIn": false,
            "LaunchTemplate": {
                "LaunchTemplateId": "lt-1234567890abcde12",
                "LaunchTemplateName": "my-launch-template",
                "Version": "1"
            }
        }
    ]
}
```
**Esempio 2: come descrivere una o più istanze**  
Questo esempio utilizza l’opzione `--max-items` per specificare il numero di istanze da restituire con questa chiamata.  

```
aws autoscaling describe-auto-scaling-instances \
    --max-items 1
```
Se l’output include un campo `NextToken`, significa che sono presenti più istanze. Per ottenere le istanze aggiuntive, utilizza il valore di questo campo con l’opzione `--starting-token` in una chiamata successiva come descritto di seguito.  

```
aws autoscaling describe-auto-scaling-instances \
    --starting-token Z3M3LMPEXAMPLE
```
Vedi l’esempio 1 per un output di esempio.  
**Esempio 3: come descrivere le istanze che utilizzano le configurazioni di avvio**  
Questo esempio utilizza l’opzione `--query` per descrivere le istanze che utilizzano configurazioni di avvio.  

```
aws autoscaling describe-auto-scaling-instances \
    --query 'AutoScalingInstances[?LaunchConfigurationName!=`null`]'
```
Output:  

```
[
    {
        "InstanceId": "i-088c57934a6449037",
        "InstanceType": "t2.micro",
        "AutoScalingGroupName": "my-asg",
        "AvailabilityZone": "us-west-2c",
        "LifecycleState": "InService",
        "HealthStatus": "HEALTHY",
        "LaunchConfigurationName": "my-lc",
        "ProtectedFromScaleIn": false
    }
]
```
Per ulteriori informazioni, consulta [Filter AWS CLI output](https://docs.aws.amazon.com/cli/latest/userguide/cli-usage-filter.html) nella *AWS Command Line Interface User Guide*.  
+  Per i dettagli sull'API, consulta [DescribeAutoScalingInstances AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-auto-scaling-instances.html)*Command Reference.* 

------
#### [ Java ]

**SDK per Java 2.x**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/autoscale#code-examples). 

```
    public static void describeAutoScalingInstance(AutoScalingClient autoScalingClient, String id) {
        try {
            DescribeAutoScalingInstancesRequest describeAutoScalingInstancesRequest = DescribeAutoScalingInstancesRequest
                    .builder()
                    .instanceIds(id)
                    .build();

            DescribeAutoScalingInstancesResponse response = autoScalingClient
                    .describeAutoScalingInstances(describeAutoScalingInstancesRequest);
            List<AutoScalingInstanceDetails> instances = response.autoScalingInstances();
            for (AutoScalingInstanceDetails instance : instances) {
                System.out.println("The instance lifecycle state is: " + instance.lifecycleState());
            }

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
```
+  Per i dettagli sull'API, [DescribeAutoScalingInstances](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/DescribeAutoScalingInstances)consulta *AWS SDK for Java 2.x API Reference*. 

------
#### [ Kotlin ]

**SDK per Kotlin**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/autoscale#code-examples). 

```
suspend fun describeAutoScalingInstance(id: String) {
    val describeAutoScalingInstancesRequest =
        DescribeAutoScalingInstancesRequest {
            instanceIds = listOf(id)
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        val response = autoScalingClient.describeAutoScalingInstances(describeAutoScalingInstancesRequest)
        response.autoScalingInstances?.forEach { group ->
            println("The instance lifecycle state is: ${group.lifecycleState}")
        }
    }
}
```
+  Per i dettagli sull'API, [DescribeAutoScalingInstances](https://sdk.amazonaws.com/kotlin/api/latest/index.html)consulta *AWS SDK for Kotlin* API reference. 

------
#### [ PHP ]

**SDK per PHP**  
 C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code/auto-scaling#code-examples). 

```
    public function describeAutoScalingInstances($instanceIds)
    {
        return $this->autoScalingClient->describeAutoScalingInstances([
            'InstanceIds' => $instanceIds
        ]);
    }
```
+  Per i dettagli sull'API, [DescribeAutoScalingInstances](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/DescribeAutoScalingInstances)consulta *AWS SDK per PHP API Reference*. 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio elenca le tue istanze IDs di Auto Scaling.**  

```
Get-ASAutoScalingInstance | format-table -property InstanceId
```
**Output:**  

```
InstanceId
----------
i-12345678
i-87654321
i-abcd1234
```
**Esempio 2: questo esempio descrive l’istanza Auto Scaling specificata.**  

```
Get-ASAutoScalingInstance -InstanceId i-12345678
```
**Output:**  

```
AutoScalingGroupName    : my-asg
AvailabilityZone        : us-west-2b
HealthStatus            : HEALTHY
InstanceId              : i-12345678
LaunchConfigurationName : my-lc
LifecycleState          : InService
```
**Esempio 3: questo esempio descrive le due istanze Auto Scaling specificate.**  

```
Get-ASAutoScalingInstance -InstanceId @("i-12345678", "i-87654321")
```
**Esempio 4: questo esempio descrive le istanze Auto Scaling per il gruppo Auto Scaling specificato.**  

```
(Get-ASAutoScalingGroup -AutoScalingGroupName my-asg).Instances | Get-ASAutoScalingInstance
```
**Esempio 5: questo esempio descrive tutte le istanze Auto Scaling.**  

```
Get-ASAutoScalingInstance
```
+  Per i dettagli sull'API, vedere [DescribeAutoScalingInstances](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference* (V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio elenca le tue istanze IDs di Auto Scaling.**  

```
Get-ASAutoScalingInstance | format-table -property InstanceId
```
**Output:**  

```
InstanceId
----------
i-12345678
i-87654321
i-abcd1234
```
**Esempio 2: questo esempio descrive l’istanza Auto Scaling specificata.**  

```
Get-ASAutoScalingInstance -InstanceId i-12345678
```
**Output:**  

```
AutoScalingGroupName    : my-asg
AvailabilityZone        : us-west-2b
HealthStatus            : HEALTHY
InstanceId              : i-12345678
LaunchConfigurationName : my-lc
LifecycleState          : InService
```
**Esempio 3: questo esempio descrive le due istanze Auto Scaling specificate.**  

```
Get-ASAutoScalingInstance -InstanceId @("i-12345678", "i-87654321")
```
**Esempio 4: questo esempio descrive le istanze Auto Scaling per il gruppo Auto Scaling specificato.**  

```
(Get-ASAutoScalingGroup -AutoScalingGroupName my-asg).Instances | Get-ASAutoScalingInstance
```
**Esempio 5: questo esempio descrive tutte le istanze Auto Scaling.**  

```
Get-ASAutoScalingInstance
```
+  Per i dettagli sull'API, vedere [DescribeAutoScalingInstances](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference* (V5). 

------
#### [ Python ]

**SDK per Python (Boto3)**  
 C'è altro su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/auto-scaling#code-examples). 

```
class AutoScalingWrapper:
    """Encapsulates Amazon EC2 Auto Scaling actions."""

    def __init__(self, autoscaling_client):
        """
        :param autoscaling_client: A Boto3 Amazon EC2 Auto Scaling client.
        """
        self.autoscaling_client = autoscaling_client


    def describe_instances(self, instance_ids: List[str]) -> List[Dict[str, Any]]:
        """
        Gets information about instances.

        :param instance_ids: A list of instance IDs to look up.
        :return: A list of dictionaries with information about each instance,
                 or an empty list if none are found.
        :raises ClientError: If there is an error describing the instances.
        """
        try:
            paginator = self.autoscaling_client.get_paginator(
                "describe_auto_scaling_instances"
            )
            response_iterator = paginator.paginate(InstanceIds=instance_ids)

            instances = []
            for response in response_iterator:
                instances.extend(response.get("AutoScalingInstances", []))

            logger.info(f"Successfully described instances: {instance_ids}")

        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            logger.error(
                f"Couldn't describe instances {instance_ids}. Error code: {error_code}, Message: {err.response['Error']['Message']}"
            )
            raise
        else:
            return instances
```
+  Per i dettagli sull'API, consulta [DescribeAutoScalingInstances AWS](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/DescribeAutoScalingInstances)*SDK for Python (Boto3) API Reference*. 

------
#### [ Rust ]

**SDK per Rust**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/rustv1/examples/auto-scaling#code-examples). 

```
    pub async fn list_instances(&self) -> Result<Vec<String>, ScenarioError> {
        // The direct way to list instances is by using DescribeAutoScalingGroup's instances property. However, this returns a Vec<Instance>, as opposed to a Vec<AutoScalingInstanceDetails>.
        // Ok(self.get_group().await?.instances.unwrap_or_default().map(|i| i.instance_id.clone().unwrap_or_default()).filter(|id| !id.is_empty()).collect())

        // Alternatively, and for the sake of example, DescribeAutoScalingInstances returns a list that can be filtered by the client.
        self.autoscaling
            .describe_auto_scaling_instances()
            .into_paginator()
            .items()
            .send()
            .try_collect()
            .await
            .map(|items| {
                items
                    .into_iter()
                    .filter(|i| {
                        i.auto_scaling_group_name.as_deref()
                            == Some(self.auto_scaling_group_name.as_str())
                    })
                    .map(|i| i.instance_id.unwrap_or_default())
                    .filter(|id| !id.is_empty())
                    .collect::<Vec<String>>()
            })
            .map_err(|err| ScenarioError::new("Failed to get list of auto scaling instances", &err))
    }
```
+  Per i dettagli sulle API, consulta il *riferimento [DescribeAutoScalingInstances](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.describe_auto_scaling_instances)all'API AWS SDK for Rust*. 

------
#### [ SAP ABAP ]

**SDK per SAP ABAP**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/sap-abap/services/asc#code-examples). 

```
    " Example: it_instance_ids contains a list of instance IDs
    
    TRY.
        DATA(lo_output) = ao_asc->describeautoscalinginstances(
          it_instanceids = it_instance_ids ).

        ot_output = lo_output->get_autoscalinginstances( ).

        MESSAGE 'Auto Scaling instances information retrieved successfully' TYPE 'I'.

      CATCH /aws1/cx_ascresrccontionfault INTO DATA(lo_contention).
        RAISE EXCEPTION lo_contention.
      CATCH /aws1/cx_rt_generic INTO DATA(lo_generic_exception).
        RAISE EXCEPTION lo_generic_exception.
    ENDTRY.
```
+  Per i dettagli sulle API, [DescribeAutoScalingInstances](https://docs.aws.amazon.com/sdk-for-sap-abap/v1/api/latest/index.html)consulta *AWS SDK for SAP ABAP* API reference. 

------

# Utilizzare `DescribeAutoScalingNotificationTypes` con una CLI
<a name="auto-scaling_example_auto-scaling_DescribeAutoScalingNotificationTypes_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeAutoScalingNotificationTypes`.

------
#### [ CLI ]

**AWS CLI**  
**Come descrivere i tipi di notifica disponibili**  
Questo esempio descrive i tipi di notifica disponibili.  

```
aws autoscaling describe-auto-scaling-notification-types
```
Output:  

```
{
    "AutoScalingNotificationTypes": [
        "autoscaling:EC2_INSTANCE_LAUNCH",
        "autoscaling:EC2_INSTANCE_LAUNCH_ERROR",
        "autoscaling:EC2_INSTANCE_TERMINATE",
        "autoscaling:EC2_INSTANCE_TERMINATE_ERROR",
        "autoscaling:TEST_NOTIFICATION"
    ]
}
```
Per ulteriori informazioni, consulta l’argomento relativo alla [ricezione di notifiche Amazon SNS quando il gruppo Auto Scaling viene ridimensionato](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ASGettingNotifications.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [DescribeAutoScalingNotificationTypes AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-auto-scaling-notification-types.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio elenca i tipi di notifica supportati da Auto Scaling.**  

```
Get-ASAutoScalingNotificationType
```
**Output:**  

```
autoscaling:EC2_INSTANCE_LAUNCH
autoscaling:EC2_INSTANCE_LAUNCH_ERROR
autoscaling:EC2_INSTANCE_TERMINATE
autoscaling:EC2_INSTANCE_TERMINATE_ERROR
autoscaling:TEST_NOTIFICATION
```
+  Per i dettagli sull'API, vedere [DescribeAutoScalingNotificationTypes](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio elenca i tipi di notifica supportati da Auto Scaling.**  

```
Get-ASAutoScalingNotificationType
```
**Output:**  

```
autoscaling:EC2_INSTANCE_LAUNCH
autoscaling:EC2_INSTANCE_LAUNCH_ERROR
autoscaling:EC2_INSTANCE_TERMINATE
autoscaling:EC2_INSTANCE_TERMINATE_ERROR
autoscaling:TEST_NOTIFICATION
```
+  Per i dettagli sull'API, vedere [DescribeAutoScalingNotificationTypes](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DescribeLaunchConfigurations` con una CLI
<a name="auto-scaling_example_auto-scaling_DescribeLaunchConfigurations_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeLaunchConfigurations`.

------
#### [ CLI ]

**AWS CLI**  
**Esempio 1: come descrivere la configurazione di avvio specificata.**  
Questo esempio descrive la configurazione di avvio specificata.  

```
aws autoscaling describe-launch-configurations \
    --launch-configuration-names my-launch-config
```
Output:  

```
{
    "LaunchConfigurations": [
        {
            "LaunchConfigurationName": "my-launch-config",
            "LaunchConfigurationARN": "arn:aws:autoscaling:us-west-2:123456789012:launchConfiguration:98d3b196-4cf9-4e88-8ca1-8547c24ced8b:launchConfigurationName/my-launch-config",
            "ImageId": "ami-0528a5175983e7f28",
            "KeyName": "my-key-pair-uswest2",
            "SecurityGroups": [
                "sg-05eaec502fcdadc2e"
            ],
            "ClassicLinkVPCSecurityGroups": [],
            "UserData": "",
            "InstanceType": "t2.micro",
            "KernelId": "",
            "RamdiskId": "",
            "BlockDeviceMappings": [
                {
                    "DeviceName": "/dev/xvda",
                    "Ebs": {
                        "SnapshotId": "snap-06c1606ba5ca274b1",
                        "VolumeSize": 8,
                        "VolumeType": "gp2",
                        "DeleteOnTermination": true,
                        "Encrypted": false
                    }
                }
            ],
            "InstanceMonitoring": {
                "Enabled": true
            },
            "CreatedTime": "2020-10-28T02:39:22.321Z",
            "EbsOptimized": false,
            "AssociatePublicIpAddress": true,
            "MetadataOptions": {
                "HttpTokens": "required",
                "HttpPutResponseHopLimit": 1,
                "HttpEndpoint": "disabled"
            }
        }
    ]
}
```
**Esempio 2: come descrivere un numero specificato di configurazioni di avvio**  
Per restituire un numero specifico di configurazioni di avvio, utilizza l’opzione `--max-items`.  

```
aws autoscaling describe-launch-configurations \
    --max-items 1
```
Se l’output include un campo `NextToken`, significa che sono presenti più configurazioni di avvio. Per ottenere le configurazioni di avvio aggiuntive, utilizza il valore di questo campo con l’opzione `--starting-token` in una chiamata successiva come descritto di seguito.  

```
aws autoscaling describe-launch-configurations \
    --starting-token Z3M3LMPEXAMPLE
```
+  Per i dettagli sull'API, consulta [DescribeLaunchConfigurations AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-launch-configurations.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio elenca i nomi delle configurazioni di avvio.**  

```
Get-ASLaunchConfiguration | format-table -property LaunchConfigurationName
```
**Output:**  

```
LaunchConfigurationName
-----------------------
my-lc-1
my-lc-2
my-lc-3
my-lc-4
my-lc-5
```
**Esempio 2: questo esempio descrive la configurazione di avvio specificata.**  

```
Get-ASLaunchConfiguration -LaunchConfigurationName my-lc-1
```
**Output:**  

```
AssociatePublicIpAddress     : True
BlockDeviceMappings          : {/dev/xvda}
ClassicLinkVPCId             :
ClassicLinkVPCSecurityGroups : {}
CreatedTime                  : 12/12/2014 3:22:08 PM
EbsOptimized                 : False
IamInstanceProfile           :
ImageId                      : ami-043a5034
InstanceMonitoring           : Amazon.AutoScaling.Model.InstanceMonitoring
InstanceType                 : t2.micro
KernelId                     :
KeyName                      : 
LaunchConfigurationARN       : arn:aws:autoscaling:us-west-2:123456789012:launchConfiguration:7e5f31e4-693b-4604-9322-
                               e6f68d7fafad:launchConfigurationName/my-lc-1
LaunchConfigurationName      : my-lc-1
PlacementTenancy             :
RamdiskId                    :
SecurityGroups               : {sg-67ef0308}
SpotPrice                    :
UserData                     :
```
**Esempio 3: questo esempio descrive le due configurazioni di avvio specificate.**  

```
Get-ASLaunchConfiguration -LaunchConfigurationName @("my-lc-1", "my-lc-2")
```
**Esempio 4: questo esempio descrive tutte le configurazioni di avvio.**  

```
Get-ASLaunchConfiguration
```
+  Per i dettagli sull'API, vedere [DescribeLaunchConfigurations](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio elenca i nomi delle configurazioni di avvio.**  

```
Get-ASLaunchConfiguration | format-table -property LaunchConfigurationName
```
**Output:**  

```
LaunchConfigurationName
-----------------------
my-lc-1
my-lc-2
my-lc-3
my-lc-4
my-lc-5
```
**Esempio 2: questo esempio descrive la configurazione di avvio specificata.**  

```
Get-ASLaunchConfiguration -LaunchConfigurationName my-lc-1
```
**Output:**  

```
AssociatePublicIpAddress     : True
BlockDeviceMappings          : {/dev/xvda}
ClassicLinkVPCId             :
ClassicLinkVPCSecurityGroups : {}
CreatedTime                  : 12/12/2014 3:22:08 PM
EbsOptimized                 : False
IamInstanceProfile           :
ImageId                      : ami-043a5034
InstanceMonitoring           : Amazon.AutoScaling.Model.InstanceMonitoring
InstanceType                 : t2.micro
KernelId                     :
KeyName                      : 
LaunchConfigurationARN       : arn:aws:autoscaling:us-west-2:123456789012:launchConfiguration:7e5f31e4-693b-4604-9322-
                               e6f68d7fafad:launchConfigurationName/my-lc-1
LaunchConfigurationName      : my-lc-1
PlacementTenancy             :
RamdiskId                    :
SecurityGroups               : {sg-67ef0308}
SpotPrice                    :
UserData                     :
```
**Esempio 3: questo esempio descrive le due configurazioni di avvio specificate.**  

```
Get-ASLaunchConfiguration -LaunchConfigurationName @("my-lc-1", "my-lc-2")
```
**Esempio 4: questo esempio descrive tutte le configurazioni di avvio.**  

```
Get-ASLaunchConfiguration
```
+  Per i dettagli sull'API, vedere [DescribeLaunchConfigurations](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DescribeLifecycleHookTypes` con una CLI
<a name="auto-scaling_example_auto-scaling_DescribeLifecycleHookTypes_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeLifecycleHookTypes`.

------
#### [ CLI ]

**AWS CLI**  
**Come descrivere i tipi di hook del ciclo di vita disponibili.**  
Questo esempio descrive i tipi di hook del ciclo di vita disponibili.  

```
aws autoscaling describe-lifecycle-hook-types
```
Output:  

```
{
    "LifecycleHookTypes": [
        "autoscaling:EC2_INSTANCE_LAUNCHING",
        "autoscaling:EC2_INSTANCE_TERMINATING"
    ]
}
```
+  Per i dettagli sull'API, consulta [DescribeLifecycleHookTypes AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-lifecycle-hook-types.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio elenca i tipi di hook del ciclo di vita supportati da Auto Scaling.**  

```
Get-ASLifecycleHookType
```
**Output:**  

```
autoscaling:EC2_INSTANCE_LAUNCHING
auto-scaling:EC2_INSTANCE_TERMINATING
```
+  Per i dettagli sull'API, vedere [DescribeLifecycleHookTypes](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio elenca i tipi di hook del ciclo di vita supportati da Auto Scaling.**  

```
Get-ASLifecycleHookType
```
**Output:**  

```
autoscaling:EC2_INSTANCE_LAUNCHING
auto-scaling:EC2_INSTANCE_TERMINATING
```
+  Per i dettagli sull'API, vedere [DescribeLifecycleHookTypes](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DescribeLifecycleHooks` con una CLI
<a name="auto-scaling_example_auto-scaling_DescribeLifecycleHooks_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeLifecycleHooks`.

------
#### [ CLI ]

**AWS CLI**  
**Come descrivere gli hook del ciclo di vita**  
Questo esempio descrive gli hook del ciclo di vita del gruppo Auto Scaling specificato.  

```
aws autoscaling describe-lifecycle-hooks \
    --auto-scaling-group-name my-asg
```
Output:  

```
{
    "LifecycleHooks": [
        {
            "GlobalTimeout": 3000,
            "HeartbeatTimeout": 30,
            "AutoScalingGroupName": "my-asg",
            "LifecycleHookName": "my-launch-hook",
            "DefaultResult": "ABANDON",
            "LifecycleTransition": "autoscaling:EC2_INSTANCE_LAUNCHING"
        },
        {
            "GlobalTimeout": 6000,
            "HeartbeatTimeout": 60,
            "AutoScalingGroupName": "my-asg",
            "LifecycleHookName": "my-termination-hook",
            "DefaultResult": "CONTINUE",
            "LifecycleTransition": "autoscaling:EC2_INSTANCE_TERMINATING"
        }
    ]
}
```
+  Per i dettagli sull'API, consulta [DescribeLifecycleHooks AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-lifecycle-hooks.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio descrive l’hook del ciclo di vita specificato.**  

```
Get-ASLifecycleHook -AutoScalingGroupName my-asg -LifecycleHookName myLifecycleHook
```
**Output:**  

```
AutoScalingGroupName  : my-asg
DefaultResult         : ABANDON
GlobalTimeout         : 172800
HeartbeatTimeout      : 3600
LifecycleHookName     : myLifecycleHook
LifecycleTransition   : auto-scaling:EC2_INSTANCE_LAUNCHING
NotificationMetadata  :
NotificationTargetARN : arn:aws:sns:us-west-2:123456789012:my-topic
RoleARN               : arn:aws:iam::123456789012:role/my-iam-role
```
**Esempio 2: questo esempio descrive tutti gli hook del ciclo di vita del gruppo Auto Scaling specificato.**  

```
Get-ASLifecycleHook -AutoScalingGroupName my-asg
```
**Esempio 3: questo esempio descrive tutti gli hook del ciclo di vita di tutti i gruppi Auto Scaling.**  

```
Get-ASLifecycleHook
```
+  Per i dettagli sull'API, vedere [DescribeLifecycleHooks](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio descrive l’hook del ciclo di vita specificato.**  

```
Get-ASLifecycleHook -AutoScalingGroupName my-asg -LifecycleHookName myLifecycleHook
```
**Output:**  

```
AutoScalingGroupName  : my-asg
DefaultResult         : ABANDON
GlobalTimeout         : 172800
HeartbeatTimeout      : 3600
LifecycleHookName     : myLifecycleHook
LifecycleTransition   : auto-scaling:EC2_INSTANCE_LAUNCHING
NotificationMetadata  :
NotificationTargetARN : arn:aws:sns:us-west-2:123456789012:my-topic
RoleARN               : arn:aws:iam::123456789012:role/my-iam-role
```
**Esempio 2: questo esempio descrive tutti gli hook del ciclo di vita del gruppo Auto Scaling specificato.**  

```
Get-ASLifecycleHook -AutoScalingGroupName my-asg
```
**Esempio 3: questo esempio descrive tutti gli hook del ciclo di vita di tutti i gruppi Auto Scaling.**  

```
Get-ASLifecycleHook
```
+  Per i dettagli sull'API, vedere [DescribeLifecycleHooks](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DescribeLoadBalancers` con una CLI
<a name="auto-scaling_example_auto-scaling_DescribeLoadBalancers_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeLoadBalancers`.

------
#### [ CLI ]

**AWS CLI**  
**Come descrivere i Classic Load Balancer per un gruppo Auto Scaling**  
Questo esempio descrive i Classic Load Balancer per il gruppo Auto Scaling specificato.  

```
aws autoscaling describe-load-balancers \
    --auto-scaling-group-name my-asg
```
Output:  

```
{
    "LoadBalancers": [
        {
            "State": "Added",
            "LoadBalancerName": "my-load-balancer"
        }
    ]
}
```
+  Per i dettagli sull'API, consulta [DescribeLoadBalancers AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-load-balancers.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio descrive i bilanciatori del carico del gruppo Auto Scaling specificato.**  

```
Get-ASLoadBalancer -AutoScalingGroupName my-asg
```
**Output:**  

```
LoadBalancerName    State
----------------    -----
my-lb               Added
```
+  Per i dettagli sull'API, vedere [DescribeLoadBalancers](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio descrive i bilanciatori del carico del gruppo Auto Scaling specificato.**  

```
Get-ASLoadBalancer -AutoScalingGroupName my-asg
```
**Output:**  

```
LoadBalancerName    State
----------------    -----
my-lb               Added
```
+  Per i dettagli sull'API, vedere [DescribeLoadBalancers](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DescribeMetricCollectionTypes` con una CLI
<a name="auto-scaling_example_auto-scaling_DescribeMetricCollectionTypes_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeMetricCollectionTypes`.

------
#### [ CLI ]

**AWS CLI**  
**Come descrivere i tipi di raccolta delle metriche disponibili**  
Questo esempio descrive i tipi di raccolta delle metriche disponibili.  

```
aws autoscaling describe-metric-collection-types
```
Output:  

```
{
    "Metrics": [
        {
            "Metric": "GroupMinSize"
        },
        {
            "Metric": "GroupMaxSize"
        },
        {
            "Metric": "GroupDesiredCapacity"
        },
        {
            "Metric": "GroupInServiceInstances"
        },
        {
            "Metric": "GroupInServiceCapacity"
        },
        {
            "Metric": "GroupPendingInstances"
        },
        {
            "Metric": "GroupPendingCapacity"
        },
        {
            "Metric": "GroupTerminatingInstances"
        },
        {
            "Metric": "GroupTerminatingCapacity"
        },
        {
            "Metric": "GroupStandbyInstances"
        },
        {
            "Metric": "GroupStandbyCapacity"
        },
        {
            "Metric": "GroupTotalInstances"
        },
        {
            "Metric": "GroupTotalCapacity"
        }
    ],
    "Granularities": [
        {
            "Granularity": "1Minute"
        }
    ]
}
```
Per ulteriori informazioni, consulta [Metriche per gruppi Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-instance-monitoring.html#as-group-metrics) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [DescribeMetricCollectionTypes AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-metric-collection-types.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio elenca i tipi di raccolta delle metriche supportati da Auto Scaling.**  

```
(Get-ASMetricCollectionType).Metrics
```
**Output:**  

```
Metric
------
GroupMinSize
GroupMaxSize
GroupDesiredCapacity
GroupInServiceInstances
GroupPendingInstances
GroupTerminatingInstances
GroupStandbyInstances
GroupTotalInstances
```
**Esempio 2: questo esempio elenca le granularità corrispondenti.**  

```
(Get-ASMetricCollectionType).Granularities
```
**Output:**  

```
Granularity
-----------
1Minute
```
+  Per i dettagli sull'API, vedere [DescribeMetricCollectionTypes](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio elenca i tipi di raccolta delle metriche supportati da Auto Scaling.**  

```
(Get-ASMetricCollectionType).Metrics
```
**Output:**  

```
Metric
------
GroupMinSize
GroupMaxSize
GroupDesiredCapacity
GroupInServiceInstances
GroupPendingInstances
GroupTerminatingInstances
GroupStandbyInstances
GroupTotalInstances
```
**Esempio 2: questo esempio elenca le granularità corrispondenti.**  

```
(Get-ASMetricCollectionType).Granularities
```
**Output:**  

```
Granularity
-----------
1Minute
```
+  Per i dettagli sull'API, vedere [DescribeMetricCollectionTypes](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DescribeNotificationConfigurations` con una CLI
<a name="auto-scaling_example_auto-scaling_DescribeNotificationConfigurations_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeNotificationConfigurations`.

------
#### [ CLI ]

**AWS CLI**  
**Esempio 1: come descrivere le configurazioni di notifica di un gruppo specificato.**  
Questo esempio descrive le configurazioni di notifica del gruppo Auto Scaling specificato.  

```
aws autoscaling describe-notification-configurations \
    --auto-scaling-group-name my-asg
```
Output:  

```
{
    "NotificationConfigurations": [
        {
            "AutoScalingGroupName": "my-asg",
            "NotificationType": "autoscaling:TEST_NOTIFICATION",
            "TopicARN": "arn:aws:sns:us-west-2:123456789012:my-sns-topic-2"
        },
        {
            "AutoScalingGroupName": "my-asg",
            "NotificationType": "autoscaling:TEST_NOTIFICATION",
            "TopicARN": "arn:aws:sns:us-west-2:123456789012:my-sns-topic"
        }
    ]
}
```
Per ulteriori informazioni, consulta l’argomento relativo alla [ricezione di notifiche Amazon SNS quando il gruppo Auto Scaling viene ridimensionato](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ASGettingNotifications.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 1: come descrivere il numero specificato di configurazioni di notifica**  
Per restituire un numero specifico di configurazioni di notifica, utilizza il parametro `max-items`.  

```
aws autoscaling describe-notification-configurations \
    --auto-scaling-group-name my-auto-scaling-group \
    --max-items 1
```
Output:  

```
{
    "NotificationConfigurations": [
        {
            "AutoScalingGroupName": "my-asg",
            "NotificationType": "autoscaling:TEST_NOTIFICATION",
            "TopicARN": "arn:aws:sns:us-west-2:123456789012:my-sns-topic-2"
        },
        {
            "AutoScalingGroupName": "my-asg",
            "NotificationType": "autoscaling:TEST_NOTIFICATION",
            "TopicARN": "arn:aws:sns:us-west-2:123456789012:my-sns-topic"
        }
    ]
}
```
Se l’output include un campo `NextToken`, significa che sono presenti più configurazioni di notifica. Per ottenere le configurazioni di notifica aggiuntive, utilizza il valore di questo campo con il parametro `starting-token` in una chiamata successiva come descritto di seguito.  

```
aws autoscaling describe-notification-configurations \
    --auto-scaling-group-name my-asg \
    --starting-token Z3M3LMPEXAMPLE
```
Per ulteriori informazioni, consulta l’argomento relativo alla [ricezione di notifiche Amazon SNS quando il gruppo Auto Scaling viene ridimensionato](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ASGettingNotifications.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [DescribeNotificationConfigurations AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-notification-configurations.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio descrive le azioni di notifica associate al gruppo Auto Scaling specificato.**  

```
Get-ASNotificationConfiguration -AutoScalingGroupName my-asg | format-list
```
**Output:**  

```
AutoScalingGroupName : my-asg
NotificationType     : auto-scaling:EC2_INSTANCE_LAUNCH
TopicARN             : arn:aws:sns:us-west-2:123456789012:my-topic

AutoScalingGroupName : my-asg
NotificationType     : auto-scaling:EC2_INSTANCE_TERMINATE
TopicARN             : arn:aws:sns:us-west-2:123456789012:my-topic
```
**Esempio 2: questo esempio descrive le azioni di notifica associate a tutti i gruppi Auto Scaling.**  

```
Get-ASNotificationConfiguration
```
+  Per i dettagli sull'API, vedere [DescribeNotificationConfigurations](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio descrive le azioni di notifica associate al gruppo Auto Scaling specificato.**  

```
Get-ASNotificationConfiguration -AutoScalingGroupName my-asg | format-list
```
**Output:**  

```
AutoScalingGroupName : my-asg
NotificationType     : auto-scaling:EC2_INSTANCE_LAUNCH
TopicARN             : arn:aws:sns:us-west-2:123456789012:my-topic

AutoScalingGroupName : my-asg
NotificationType     : auto-scaling:EC2_INSTANCE_TERMINATE
TopicARN             : arn:aws:sns:us-west-2:123456789012:my-topic
```
**Esempio 2: questo esempio descrive le azioni di notifica associate a tutti i gruppi Auto Scaling.**  

```
Get-ASNotificationConfiguration
```
+  Per i dettagli sull'API, vedere [DescribeNotificationConfigurations](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DescribePolicies` con una CLI
<a name="auto-scaling_example_auto-scaling_DescribePolicies_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribePolicies`.

------
#### [ CLI ]

**AWS CLI**  
**Esempio 1: come descrivere le policy di dimensionamento di un gruppo specificato.**  
Questo esempio descrive le policy di dimensionamento del gruppo Auto Scaling specificato.  

```
aws autoscaling describe-policies \
    --auto-scaling-group-name my-asg
```
Output:  

```
{
    "ScalingPolicies": [
        {
            "AutoScalingGroupName": "my-asg",
            "PolicyName": "alb1000-target-tracking-scaling-policy",
            "PolicyARN": "arn:aws:autoscaling:us-west-2:123456789012:scalingPolicy:3065d9c8-9969-4bec-bb6a-3fbe5550fde6:autoScalingGroupName/my-asg:policyName/alb1000-target-tracking-scaling-policy",
            "PolicyType": "TargetTrackingScaling",
            "StepAdjustments": [],
            "Alarms": [
                {
                    "AlarmName": "TargetTracking-my-asg-AlarmHigh-924887a9-12d7-4e01-8686-6f844d13a196",
                    "AlarmARN": "arn:aws:cloudwatch:us-west-2:123456789012:alarm:TargetTracking-my-asg-AlarmHigh-924887a9-12d7-4e01-8686-6f844d13a196"
                },
                {
                    "AlarmName": "TargetTracking-my-asg-AlarmLow-f96f899d-b8e7-4d09-a010-c1aaa35da296",
                    "AlarmARN": "arn:aws:cloudwatch:us-west-2:123456789012:alarm:TargetTracking-my-asg-AlarmLow-f96f899d-b8e7-4d09-a010-c1aaa35da296"
                }
            ],
            "TargetTrackingConfiguration": {
                "PredefinedMetricSpecification": {
                    "PredefinedMetricType": "ALBRequestCountPerTarget",
                    "ResourceLabel": "app/my-alb/778d41231b141a0f/targetgroup/my-alb-target-group/943f017f100becff"
                },
                "TargetValue": 1000.0,
                "DisableScaleIn": false
            },
            "Enabled": true
        },
        {
            "AutoScalingGroupName": "my-asg",
            "PolicyName": "cpu40-target-tracking-scaling-policy",
            "PolicyARN": "arn:aws:autoscaling:us-west-2:123456789012:scalingPolicy:5fd26f71-39d4-4690-82a9-b8515c45cdde:autoScalingGroupName/my-asg:policyName/cpu40-target-tracking-scaling-policy",
            "PolicyType": "TargetTrackingScaling",
            "StepAdjustments": [],
            "Alarms": [
                {
                    "AlarmName": "TargetTracking-my-asg-AlarmHigh-139f9789-37b9-42ad-bea5-b5b147d7f473",
                    "AlarmARN": "arn:aws:cloudwatch:us-west-2:123456789012:alarm:TargetTracking-my-asg-AlarmHigh-139f9789-37b9-42ad-bea5-b5b147d7f473"
                },
                {
                    "AlarmName": "TargetTracking-my-asg-AlarmLow-bd681c67-fc18-4c56-8468-fb8e413009c9",
                    "AlarmARN": "arn:aws:cloudwatch:us-west-2:123456789012:alarm:TargetTracking-my-asg-AlarmLow-bd681c67-fc18-4c56-8468-fb8e413009c9"
                }
            ],
            "TargetTrackingConfiguration": {
                "PredefinedMetricSpecification": {
                    "PredefinedMetricType": "ASGAverageCPUUtilization"
                },
                "TargetValue": 40.0,
                "DisableScaleIn": false
            },
            "Enabled": true
        }
    ]
}
```
Per ulteriori informazioni, consulta [Dimensionamento dinamico](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-scale-based-on-demand.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 2: come descrivere le policy di dimensionamento di un nome specificato**  
Per restituire policy di dimensionamento specifiche, utilizza l’opzione `--policy-names`.  

```
aws autoscaling describe-policies \
    --auto-scaling-group-name my-asg \
    --policy-names cpu40-target-tracking-scaling-policy
```
Vedi l’esempio 1 per un output di esempio.  
Per ulteriori informazioni, consulta [Dimensionamento dinamico](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-scale-based-on-demand.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 3: come descrivere una serie di policy di dimensionamento**  
Per restituire un numero specifico di policy, utilizza l’opzione `--max-items`.  

```
aws autoscaling describe-policies \
    --auto-scaling-group-name my-asg \
    --max-items 1
```
Vedi l’esempio 1 per un output di esempio.  
Se l’output include un campo `NextToken`, utilizza il valore di questo campo con l’opzione `--starting-token` in una chiamata successiva per ottenere le policy aggiuntive.  

```
aws autoscaling describe-policies --auto-scaling-group-name my-asg --starting-token Z3M3LMPEXAMPLE
```
Per ulteriori informazioni, consulta [Dimensionamento dinamico](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-scale-based-on-demand.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [DescribePolicies AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-policies.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio descrive tutte le policy del gruppo Auto Scaling specificato.**  

```
Get-ASPolicy -AutoScalingGroupName my-asg
```
**Output:**  

```
AdjustmentType          : ChangeInCapacity
Alarms                  : {}
AutoScalingGroupName    : my-asg
Cooldown                : 0
EstimatedInstanceWarmup : 0
MetricAggregationType   :
MinAdjustmentMagnitude  : 0
MinAdjustmentStep       : 0
PolicyARN               : arn:aws:auto-scaling:us-west-2:123456789012:scalingPolicy:aa3836ab-5462-42c7-adab-e1d769fc24ef
                          :autoScalingGroupName/my-asg:policyName/myScaleInPolicy
PolicyName              : myScaleInPolicy
PolicyType              : SimpleScaling
ScalingAdjustment       : -1
StepAdjustments         : {}
```
**Esempio 2: questo esempio descrive tutte le policy specificate per il gruppo Auto Scaling specificato.**  

```
Get-ASPolicy -AutoScalingGroupName my-asg -PolicyName @("myScaleOutPolicy", "myScaleInPolicy")
```
**Esempio 3: questo esempio descrive tutte le policy per tutti i gruppi Auto Scaling.**  

```
Get-ASPolicy
```
+  Per i dettagli sull'API, vedere [DescribePolicies](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio descrive tutte le policy del gruppo Auto Scaling specificato.**  

```
Get-ASPolicy -AutoScalingGroupName my-asg
```
**Output:**  

```
AdjustmentType          : ChangeInCapacity
Alarms                  : {}
AutoScalingGroupName    : my-asg
Cooldown                : 0
EstimatedInstanceWarmup : 0
MetricAggregationType   :
MinAdjustmentMagnitude  : 0
MinAdjustmentStep       : 0
PolicyARN               : arn:aws:auto-scaling:us-west-2:123456789012:scalingPolicy:aa3836ab-5462-42c7-adab-e1d769fc24ef
                          :autoScalingGroupName/my-asg:policyName/myScaleInPolicy
PolicyName              : myScaleInPolicy
PolicyType              : SimpleScaling
ScalingAdjustment       : -1
StepAdjustments         : {}
```
**Esempio 2: questo esempio descrive tutte le policy specificate per il gruppo Auto Scaling specificato.**  

```
Get-ASPolicy -AutoScalingGroupName my-asg -PolicyName @("myScaleOutPolicy", "myScaleInPolicy")
```
**Esempio 3: questo esempio descrive tutte le policy per tutti i gruppi Auto Scaling.**  

```
Get-ASPolicy
```
+  Per i dettagli sull'API, vedere [DescribePolicies](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzo `DescribeScalingActivities` con un AWS SDK o una CLI
<a name="auto-scaling_example_auto-scaling_DescribeScalingActivities_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeScalingActivities`.

Gli esempi di operazioni sono estratti di codice da programmi più grandi e devono essere eseguiti nel contesto. È possibile visualizzare questa operazione nel contesto nel seguente esempio di codice: 
+  [Informazioni di base](auto-scaling_example_auto-scaling_Scenario_GroupsAndInstances_section.md) 

------
#### [ .NET ]

**SDK per .NET (v4)**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv4/AutoScaling#code-examples). 

```
    /// <summary>
    /// Retrieve a list of the Amazon EC2 Auto Scaling activities for an
    /// Amazon EC2 Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name of the Amazon EC2 Auto Scaling group.</param>
    /// <returns>A list of Amazon EC2 Auto Scaling activities.</returns>
    public async Task<List<Activity>> DescribeScalingActivitiesAsync(
        string groupName)
    {
        var activities = new List<Activity>();
        var scalingActivitiesRequest = new DescribeScalingActivitiesRequest
        {
            AutoScalingGroupName = groupName,
            MaxRecords = 10,
        };

        var response = await _amazonAutoScaling.DescribeScalingActivitiesAsync(scalingActivitiesRequest);
        if (response.Activities != null)
        {
            activities = response.Activities;
        }
        return activities;
    }
```
+  Per i dettagli sull'API, [DescribeScalingActivities](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/DescribeScalingActivities)consulta *AWS SDK per .NET API Reference*. 

------
#### [ C\$1\$1 ]

**SDK per C\$1\$1**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/autoscaling#code-examples). 

```
        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

    Aws::AutoScaling::AutoScalingClient autoScalingClient(clientConfig);

        Aws::AutoScaling::Model::DescribeScalingActivitiesRequest request;
        request.SetAutoScalingGroupName(groupName);

        Aws::Vector<Aws::AutoScaling::Model::Activity> allActivities;
        Aws::String nextToken; // Used for pagination;
        do {
            if (!nextToken.empty()) {
                request.SetNextToken(nextToken);
            }
            Aws::AutoScaling::Model::DescribeScalingActivitiesOutcome outcome =
                    autoScalingClient.DescribeScalingActivities(request);

            if (outcome.IsSuccess()) {
                const Aws::Vector<Aws::AutoScaling::Model::Activity> &activities =
                        outcome.GetResult().GetActivities();
                allActivities.insert(allActivities.end(), activities.begin(), activities.end());
                nextToken  = outcome.GetResult().GetNextToken();
            }
            else {
                std::cerr << "Error with AutoScaling::DescribeScalingActivities. "
                          << outcome.GetError().GetMessage()
                          << std::endl;

            }
        } while (!nextToken.empty());

        std::cout << "Found " << allActivities.size() << " activities."
                  << std::endl;
        std::cout << "Activities are ordered with the most recent first."
                  << std::endl;
        for (const Aws::AutoScaling::Model::Activity &activity: allActivities) {
            std::cout << activity.GetDescription() << std::endl;
            std::cout << activity.GetDetails() << std::endl;
        }
```
+  Per i dettagli sull'API, [DescribeScalingActivities](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/DescribeScalingActivities)consulta *AWS SDK per C\$1\$1 API Reference*. 

------
#### [ CLI ]

**AWS CLI**  
**Esempio 1: come descrivere le attività di dimensionamento per il gruppo specificato**  
Questo esempio descrive le attività di dimensionamento del gruppo Auto Scaling specificato.  

```
aws autoscaling describe-scaling-activities \
    --auto-scaling-group-name my-asg
```
Output:  

```
{
    "Activities": [
        {
            "ActivityId": "f9f2d65b-f1f2-43e7-b46d-d86756459699",
            "Description": "Launching a new EC2 instance: i-0d44425630326060f",
            "AutoScalingGroupName": "my-asg",
            "Cause": "At 2020-10-30T19:35:51Z a user request update of AutoScalingGroup constraints to min: 0, max: 16, desired: 16 changing the desired capacity from 0 to 16.  At 2020-10-30T19:36:07Z an instance was started in response to a difference between desired and actual capacity, increasing the capacity from 0 to 16.",
            "StartTime": "2020-10-30T19:36:09.766Z",
            "EndTime": "2020-10-30T19:36:41Z",
            "StatusCode": "Successful",
            "Progress": 100,
            "Details": "{\"Subnet ID\":\"subnet-5ea0c127\",\"Availability Zone\":\"us-west-2b\"}"
        }
    ]
}
```
Per ulteriori informazioni, consulta [Verificare un’attività di dimensionamento per un gruppo Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-verify-scaling-activity.html) nella *Guida dell’utente di Amazon EC2 Auto Scaling*.  
**Esempio 2: come descrivere le attività di dimensionamento per il gruppo eliminato**  
Per visualizzare le attività di dimensionamento dopo l’eliminazione di un gruppo Auto Scaling, aggiungi l’opzione `--include-deleted-groups`.  

```
aws autoscaling describe-scaling-activities \
    --auto-scaling-group-name my-asg \
    --include-deleted-groups
```
Output:  

```
{
    "Activities": [
        {
            "ActivityId": "e1f5de0e-f93e-1417-34ac-092a76fba220",
            "Description": "Launching a new EC2 instance.  Status Reason: Your Spot request price of 0.001 is lower than the minimum required Spot request fulfillment price of 0.0031. Launching EC2 instance failed.",
            "AutoScalingGroupName": "my-asg",
            "Cause": "At 2021-01-13T20:47:24Z a user request update of AutoScalingGroup constraints to min: 1, max: 5, desired: 3 changing the desired capacity from 0 to 3.  At 2021-01-13T20:47:27Z an instance was started in response to a difference between desired and actual capacity, increasing the capacity from 0 to 3.",
            "StartTime": "2021-01-13T20:47:30.094Z",
            "EndTime": "2021-01-13T20:47:30Z",
            "StatusCode": "Failed",
            "StatusMessage": "Your Spot request price of 0.001 is lower than the minimum required Spot request fulfillment price of 0.0031. Launching EC2 instance failed.",
            "Progress": 100,
            "Details": "{\"Subnet ID\":\"subnet-5ea0c127\",\"Availability Zone\":\"us-west-2b\"}",
            "AutoScalingGroupState": "Deleted",
            "AutoScalingGroupARN": "arn:aws:autoscaling:us-west-2:123456789012:autoScalingGroup:283179a2-f3ce-423d-93f6-66bb518232f7:autoScalingGroupName/my-asg"
        }
    ]
}
```
Per ulteriori informazioni, consulta [Risoluzione dei problemi di Amazon EC2 Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/CHAP_Troubleshooting.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 3: come descrivere il numero specificato di attività di dimensionamento**  
Per restituire un numero specifico di attività, utilizza l’opzione `--max-items`.  

```
aws autoscaling describe-scaling-activities \
    --max-items 1
```
Output:  

```
{
    "Activities": [
        {
            "ActivityId": "f9f2d65b-f1f2-43e7-b46d-d86756459699",
            "Description": "Launching a new EC2 instance: i-0d44425630326060f",
            "AutoScalingGroupName": "my-asg",
            "Cause": "At 2020-10-30T19:35:51Z a user request update of AutoScalingGroup constraints to min: 0, max: 16, desired: 16 changing the desired capacity from 0 to 16.  At 2020-10-30T19:36:07Z an instance was started in response to a difference between desired and actual capacity, increasing the capacity from 0 to 16.",
            "StartTime": "2020-10-30T19:36:09.766Z",
            "EndTime": "2020-10-30T19:36:41Z",
            "StatusCode": "Successful",
            "Progress": 100,
            "Details": "{\"Subnet ID\":\"subnet-5ea0c127\",\"Availability Zone\":\"us-west-2b\"}"
        }
    ]
}
```
Se l’output include un campo `NextToken`, significa che sono presenti più attività. Per ottenere le attività aggiuntive, utilizza il valore di questo campo con l’opzione `--starting-token` in una chiamata successiva come descritto di seguito.  

```
aws autoscaling describe-scaling-activities \
    --starting-token Z3M3LMPEXAMPLE
```
Per ulteriori informazioni, consulta [Verificare un’attività di dimensionamento per un gruppo Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-verify-scaling-activity.html) nella *Guida dell’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [DescribeScalingActivities AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-scaling-activities.html)*Command Reference*. 

------
#### [ Java ]

**SDK per Java 2.x**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/autoscale#code-examples). 

```
    public static void describeScalingActivities(AutoScalingClient autoScalingClient, String groupName) {
        try {
            DescribeScalingActivitiesRequest scalingActivitiesRequest = DescribeScalingActivitiesRequest.builder()
                    .autoScalingGroupName(groupName)
                    .maxRecords(10)
                    .build();

            DescribeScalingActivitiesResponse response = autoScalingClient
                    .describeScalingActivities(scalingActivitiesRequest);
            List<Activity> activities = response.activities();
            for (Activity activity : activities) {
                System.out.println("The activity Id is " + activity.activityId());
                System.out.println("The activity details are " + activity.details());
            }

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
```
+  Per i dettagli sull'API, [DescribeScalingActivities](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/DescribeScalingActivities)consulta *AWS SDK for Java 2.x API Reference*. 

------
#### [ Kotlin ]

**SDK per Kotlin**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/autoscale#code-examples). 

```
suspend fun describeAutoScalingGroups(groupName: String) {
    val groupsReques =
        DescribeAutoScalingGroupsRequest {
            autoScalingGroupNames = listOf(groupName)
            maxRecords = 10
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        val response = autoScalingClient.describeAutoScalingGroups(groupsReques)
        response.autoScalingGroups?.forEach { group ->
            println("The service to use for the health checks: ${group.healthCheckType}")
        }
    }
}
```
+  Per i dettagli sull'API, [DescribeScalingActivities](https://sdk.amazonaws.com/kotlin/api/latest/index.html)consulta *AWS SDK for Kotlin* API reference. 

------
#### [ PHP ]

**SDK per PHP**  
 C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code/auto-scaling#code-examples). 

```
    public function describeScalingActivities($autoScalingGroupName)
    {
        return $this->autoScalingClient->describeScalingActivities([
            'AutoScalingGroupName' => $autoScalingGroupName,
        ]);
    }
```
+  Per i dettagli sull'API, [DescribeScalingActivities](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/DescribeScalingActivities)consulta *AWS SDK per PHP API Reference*. 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio descrive le attività di dimensionamento nelle ultime sei settimane per il gruppo Auto Scaling specificato.**  

```
Get-ASScalingActivity -AutoScalingGroupName my-asg
```
**Output:**  

```
ActivityId           : 063308ae-aa22-4a9b-94f4-9fae4EXAMPLE
AutoScalingGroupName : my-asg
Cause                : At 2015-11-22T15:45:16Z a user request explicitly set group desired capacity changing the desired
                       capacity from 1 to 2.  At 2015-11-22T15:45:34Z an instance was started in response to a difference
                       between desired and actual capacity, increasing the capacity from 1 to 2.
Description          : Launching a new EC2 instance: i-26e715fc
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 11/22/2015 7:46:09 AM
Progress             : 100
StartTime            : 11/22/2015 7:45:35 AM
StatusCode           : Successful
StatusMessage        :

ActivityId           : ce719997-086d-4c73-a2f1-ab703EXAMPLE
AutoScalingGroupName : my-asg
Cause                : At 2015-11-20T22:57:53Z a user request created an AutoScalingGroup changing the desired capacity
                        from 0 to 1.  At 2015-11-20T22:57:58Z an instance was started in response to a difference betwe
                       en desired and actual capacity, increasing the capacity from 0 to 1.
Description          : Launching a new EC2 instance: i-93633f9b
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 11/20/2015 2:58:32 PM
Progress             : 100
StartTime            : 11/20/2015 2:57:59 PM
StatusCode           : Successful
StatusMessage        :
```
**Esempio 2: questo esempio descrive l’attività di dimensionamento specificata.**  

```
Get-ASScalingActivity -ActivityId "063308ae-aa22-4a9b-94f4-9fae4EXAMPLE"
```
**Esempio 3: questo esempio descrive le attività di dimensionamento nelle ultime sei settimane per tutti i gruppi Auto Scaling.**  

```
Get-ASScalingActivity
```
+  Per i dettagli sull'API, vedere [DescribeScalingActivities](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio descrive le attività di dimensionamento nelle ultime sei settimane per il gruppo Auto Scaling specificato.**  

```
Get-ASScalingActivity -AutoScalingGroupName my-asg
```
**Output:**  

```
ActivityId           : 063308ae-aa22-4a9b-94f4-9fae4EXAMPLE
AutoScalingGroupName : my-asg
Cause                : At 2015-11-22T15:45:16Z a user request explicitly set group desired capacity changing the desired
                       capacity from 1 to 2.  At 2015-11-22T15:45:34Z an instance was started in response to a difference
                       between desired and actual capacity, increasing the capacity from 1 to 2.
Description          : Launching a new EC2 instance: i-26e715fc
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 11/22/2015 7:46:09 AM
Progress             : 100
StartTime            : 11/22/2015 7:45:35 AM
StatusCode           : Successful
StatusMessage        :

ActivityId           : ce719997-086d-4c73-a2f1-ab703EXAMPLE
AutoScalingGroupName : my-asg
Cause                : At 2015-11-20T22:57:53Z a user request created an AutoScalingGroup changing the desired capacity
                        from 0 to 1.  At 2015-11-20T22:57:58Z an instance was started in response to a difference betwe
                       en desired and actual capacity, increasing the capacity from 0 to 1.
Description          : Launching a new EC2 instance: i-93633f9b
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 11/20/2015 2:58:32 PM
Progress             : 100
StartTime            : 11/20/2015 2:57:59 PM
StatusCode           : Successful
StatusMessage        :
```
**Esempio 2: questo esempio descrive l’attività di dimensionamento specificata.**  

```
Get-ASScalingActivity -ActivityId "063308ae-aa22-4a9b-94f4-9fae4EXAMPLE"
```
**Esempio 3: questo esempio descrive le attività di dimensionamento nelle ultime sei settimane per tutti i gruppi Auto Scaling.**  

```
Get-ASScalingActivity
```
+  Per i dettagli sull'API, vedere [DescribeScalingActivities](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------
#### [ Python ]

**SDK per Python (Boto3)**  
 C'è altro su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/auto-scaling#code-examples). 

```
class AutoScalingWrapper:
    """Encapsulates Amazon EC2 Auto Scaling actions."""

    def __init__(self, autoscaling_client):
        """
        :param autoscaling_client: A Boto3 Amazon EC2 Auto Scaling client.
        """
        self.autoscaling_client = autoscaling_client


    def describe_scaling_activities(self, group_name: str) -> List[Dict[str, Any]]:
        """
        Gets information about scaling activities for the group. Scaling activities
        are things like instances stopping or starting in response to user requests
        or capacity changes.

        :param group_name: The name of the group to look up.
        :return: A list of dictionaries representing the scaling activities for the
                 group, ordered with the most recent activity first.
        :raises ClientError: If there is an error describing the scaling activities.
        """
        try:
            paginator = self.autoscaling_client.get_paginator(
                "describe_scaling_activities"
            )
            response_iterator = paginator.paginate(AutoScalingGroupName=group_name)
            activities = []
            for response in response_iterator:
                activities.extend(response.get("Activities", []))

            logger.info(
                f"Successfully described scaling activities for group '{group_name}'."
            )

        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            logger.error(
                f"Couldn't describe scaling activities for group '{group_name}'. Error code: {error_code}, Message: {err.response['Error']['Message']}"
            )

            if error_code == "ResourceContentionFault":
                logger.error(
                    f"There is a conflict with another operation that is modifying the Auto Scaling group '{group_name}'. "
                    "Please try again later."
                )
            raise
        else:
            return activities
```
+  Per i dettagli sull'API, consulta [DescribeScalingActivities AWS](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/DescribeScalingActivities)*SDK for Python (Boto3) API Reference*. 

------
#### [ Rust ]

**SDK per Rust**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/rustv1/examples/auto-scaling#code-examples). 

```
    pub async fn describe_scenario(&self) -> AutoScalingScenarioDescription {
        let group = self
            .autoscaling
            .describe_auto_scaling_groups()
            .auto_scaling_group_names(self.auto_scaling_group_name.clone())
            .send()
            .await
            .map(|s| {
                s.auto_scaling_groups()
                    .iter()
                    .map(|s| {
                        format!(
                            "{}: {}",
                            s.auto_scaling_group_name().unwrap_or("Unknown"),
                            s.status().unwrap_or("Unknown")
                        )
                    })
                    .collect::<Vec<String>>()
            })
            .map_err(|e| {
                ScenarioError::new("Failed to describe auto scaling groups for scenario", &e)
            });

        let instances = self
            .list_instances()
            .await
            .map_err(|e| anyhow!("There was an error listing instances: {e}",));

        // 10. DescribeScalingActivities: list the scaling activities that have occurred for the group so far.
        //   Bonus: use CloudWatch API to get and show some metrics collected for the group.
        //   CW.ListMetrics with Namespace='AWS/AutoScaling' and Dimensions=[{'Name': 'AutoScalingGroupName', 'Value': }]
        //   CW.GetMetricStatistics with Statistics='Sum'. Start and End times must be in UTC!
        let activities = self
            .autoscaling
            .describe_scaling_activities()
            .auto_scaling_group_name(self.auto_scaling_group_name.clone())
            .into_paginator()
            .items()
            .send()
            .collect::<Result<Vec<_>, _>>()
            .await
            .map_err(|e| {
                anyhow!(
                    "There was an error retrieving scaling activities: {}",
                    DisplayErrorContext(&e)
                )
            });

        AutoScalingScenarioDescription {
            group,
            instances,
            activities,
        }
    }
```
+  Per i dettagli sulle API, consulta il *riferimento [DescribeScalingActivities](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.describe_scaling_activities)all'API AWS SDK for Rust*. 

------
#### [ SAP ABAP ]

**SDK per SAP ABAP**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/sap-abap/services/asc#code-examples). 

```
    " Example: iv_group_name = 'my-auto-scaling-group'
    
    TRY.
        DATA(lo_output) = ao_asc->describescalingactivities(
          iv_autoscalinggroupname = iv_group_name ).

        ot_output = lo_output->get_activities( ).

        MESSAGE 'Scaling activities retrieved successfully' TYPE 'I'.

      CATCH /aws1/cx_ascresrccontionfault INTO DATA(lo_contention).
        RAISE EXCEPTION lo_contention.
      CATCH /aws1/cx_rt_generic INTO DATA(lo_generic_exception).
        RAISE EXCEPTION lo_generic_exception.
    ENDTRY.
```
+  Per i dettagli sulle API, [DescribeScalingActivities](https://docs.aws.amazon.com/sdk-for-sap-abap/v1/api/latest/index.html)consulta *AWS SDK for SAP ABAP* API reference. 

------

# Utilizzare `DescribeScalingProcessTypes` con una CLI
<a name="auto-scaling_example_auto-scaling_DescribeScalingProcessTypes_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeScalingProcessTypes`.

------
#### [ CLI ]

**AWS CLI**  
**Come descrivere i tipi di processo disponibili**  
Questo esempio descrive i tipi di processo disponibili.  

```
aws autoscaling describe-scaling-process-types
```
Output:  

```
{
    "Processes": [
        {
            "ProcessName": "AZRebalance"
        },
        {
            "ProcessName": "AddToLoadBalancer"
        },
        {
            "ProcessName": "AlarmNotification"
        },
        {
            "ProcessName": "HealthCheck"
        },
        {
            "ProcessName": "InstanceRefresh"
        },
        {
            "ProcessName": "Launch"
        },
        {
            "ProcessName": "ReplaceUnhealthy"
        },
        {
            "ProcessName": "ScheduledActions"
        },
        {
            "ProcessName": "Terminate"
        }
    ]
}
```
Per ulteriori informazioni, consulta [Sospensione e ripresa dei processi di dimensionamento](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-suspend-resume-processes.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [DescribeScalingProcessTypes AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-scaling-process-types.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio elenca i tipi di processo supportati da Auto Scaling.**  

```
Get-ASScalingProcessType
```
**Output:**  

```
ProcessName
-----------
AZRebalance
AddToLoadBalancer
AlarmNotification
HealthCheck
Launch
ReplaceUnhealthy
ScheduledActions
Terminate
```
+  Per i dettagli sull'API, vedere [DescribeScalingProcessTypes](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio elenca i tipi di processo supportati da Auto Scaling.**  

```
Get-ASScalingProcessType
```
**Output:**  

```
ProcessName
-----------
AZRebalance
AddToLoadBalancer
AlarmNotification
HealthCheck
Launch
ReplaceUnhealthy
ScheduledActions
Terminate
```
+  Per i dettagli sull'API, vedere [DescribeScalingProcessTypes](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DescribeScheduledActions` con una CLI
<a name="auto-scaling_example_auto-scaling_DescribeScheduledActions_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeScheduledActions`.

------
#### [ CLI ]

**AWS CLI**  
**Esempio 1: come descrivere tutte le azioni pianificate.**  
Questo esempio descrive tutte le azioni pianificate.  

```
aws autoscaling describe-scheduled-actions
```
Output:  

```
{
    "ScheduledUpdateGroupActions": [
        {
            "AutoScalingGroupName": "my-asg",
            "ScheduledActionName": "my-recurring-action",
            "Recurrence": "30 0 1 1,6,12 *",
            "ScheduledActionARN": "arn:aws:autoscaling:us-west-2:123456789012:scheduledUpdateGroupAction:8e86b655-b2e6-4410-8f29-b4f094d6871c:autoScalingGroupName/my-asg:scheduledActionName/my-recurring-action",
            "StartTime": "2023-12-01T04:00:00Z",
            "Time": "2023-12-01T04:00:00Z",
            "MinSize": 1,
            "MaxSize": 6,
            "DesiredCapacity": 4,
            "TimeZone": "America/New_York"
        }
    ]
}
```
Per ulteriori informazioni, consulta [Dimensionamento programmato](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scheduled-scaling.html) nella *Guida per l’utente di Dimensionamento automatico Amazon EC2.*  
**Esempio 2: come descrivere le azioni pianificate per il gruppo specificato**  
Per descrivere le azioni pianificate per un gruppo Auto Scaling specifico, utilizza l’opzione `--auto-scaling-group-name`.  

```
aws autoscaling describe-scheduled-actions \
    --auto-scaling-group-name my-asg
```
Output:  

```
{
    "ScheduledUpdateGroupActions": [
        {
            "AutoScalingGroupName": "my-asg",
            "ScheduledActionName": "my-recurring-action",
            "Recurrence": "30 0 1 1,6,12 *",
            "ScheduledActionARN": "arn:aws:autoscaling:us-west-2:123456789012:scheduledUpdateGroupAction:8e86b655-b2e6-4410-8f29-b4f094d6871c:autoScalingGroupName/my-asg:scheduledActionName/my-recurring-action",
            "StartTime": "2023-12-01T04:00:00Z",
            "Time": "2023-12-01T04:00:00Z",
            "MinSize": 1,
            "MaxSize": 6,
            "DesiredCapacity": 4,
            "TimeZone": "America/New_York"
        }
    ]
}
```
Per ulteriori informazioni, consulta [Dimensionamento programmato](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scheduled-scaling.html) nella *Guida per l’utente di Dimensionamento automatico Amazon EC2.*  
**Esempio 3: come descrivere l’azione pianificata specificata**  
Per descrivere un’azione pianificata specifica, utilizza l’opzione `--scheduled-action-names`.  

```
aws autoscaling describe-scheduled-actions \
    --scheduled-action-names my-recurring-action
```
Output:  

```
{
    "ScheduledUpdateGroupActions": [
        {
            "AutoScalingGroupName": "my-asg",
            "ScheduledActionName": "my-recurring-action",
            "Recurrence": "30 0 1 1,6,12 *",
            "ScheduledActionARN": "arn:aws:autoscaling:us-west-2:123456789012:scheduledUpdateGroupAction:8e86b655-b2e6-4410-8f29-b4f094d6871c:autoScalingGroupName/my-asg:scheduledActionName/my-recurring-action",
            "StartTime": "2023-12-01T04:00:00Z",
            "Time": "2023-12-01T04:00:00Z",
            "MinSize": 1,
            "MaxSize": 6,
            "DesiredCapacity": 4,
            "TimeZone": "America/New_York"
        }
    ]
}
```
Per ulteriori informazioni, consulta [Dimensionamento programmato](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scheduled-scaling.html) nella *Guida per l’utente di Dimensionamento automatico Amazon EC2.*  
**Esempio 4: come descrivere le azioni pianificate con un’ora di inizio specificata**  
Per descrivere le azioni pianificate che iniziano a un’ora specifica, utilizza l’opzione `--start-time`.  

```
aws autoscaling describe-scheduled-actions \
    --start-time "2023-12-01T04:00:00Z"
```
Output:  

```
{
    "ScheduledUpdateGroupActions": [
        {
            "AutoScalingGroupName": "my-asg",
            "ScheduledActionName": "my-recurring-action",
            "Recurrence": "30 0 1 1,6,12 *",
            "ScheduledActionARN": "arn:aws:autoscaling:us-west-2:123456789012:scheduledUpdateGroupAction:8e86b655-b2e6-4410-8f29-b4f094d6871c:autoScalingGroupName/my-asg:scheduledActionName/my-recurring-action",
            "StartTime": "2023-12-01T04:00:00Z",
            "Time": "2023-12-01T04:00:00Z",
            "MinSize": 1,
            "MaxSize": 6,
            "DesiredCapacity": 4,
            "TimeZone": "America/New_York"
        }
    ]
}
```
Per ulteriori informazioni, consulta [Dimensionamento programmato](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scheduled-scaling.html) nella *Guida per l’utente di Dimensionamento automatico Amazon EC2.*  
**Esempio 5: come descrivere le azioni pianificate che terminano a un’ora specificata**  
Per descrivere le azioni pianificate che terminano a un’ora specifica, utilizza l’opzione `--end-time`.  

```
aws autoscaling describe-scheduled-actions \
    --end-time "2023-12-01T04:00:00Z"
```
Output:  

```
{
    "ScheduledUpdateGroupActions": [
        {
            "AutoScalingGroupName": "my-asg",
            "ScheduledActionName": "my-recurring-action",
            "Recurrence": "30 0 1 1,6,12 *",
            "ScheduledActionARN": "arn:aws:autoscaling:us-west-2:123456789012:scheduledUpdateGroupAction:8e86b655-b2e6-4410-8f29-b4f094d6871c:autoScalingGroupName/my-asg:scheduledActionName/my-recurring-action",
            "StartTime": "2023-12-01T04:00:00Z",
            "Time": "2023-12-01T04:00:00Z",
            "MinSize": 1,
            "MaxSize": 6,
            "DesiredCapacity": 4,
            "TimeZone": "America/New_York"
        }
    ]
}
```
Per ulteriori informazioni, consulta [Dimensionamento programmato](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scheduled-scaling.html) nella *Guida per l’utente di Dimensionamento automatico Amazon EC2.*  
**Esempio 6: come descrivere il numero specificato di azioni pianificate**  
Per restituire un numero specifico di azioni pianificate, utilizza l’opzione `--max-items`.  

```
aws autoscaling describe-scheduled-actions \
    --auto-scaling-group-name my-asg \
    --max-items 1
```
Output:  

```
{
    "ScheduledUpdateGroupActions": [
        {
            "AutoScalingGroupName": "my-asg",
            "ScheduledActionName": "my-recurring-action",
            "Recurrence": "30 0 1 1,6,12 *",
            "ScheduledActionARN": "arn:aws:autoscaling:us-west-2:123456789012:scheduledUpdateGroupAction:8e86b655-b2e6-4410-8f29-b4f094d6871c:autoScalingGroupName/my-asg:scheduledActionName/my-recurring-action",
            "StartTime": "2023-12-01T04:00:00Z",
            "Time": "2023-12-01T04:00:00Z",
            "MinSize": 1,
            "MaxSize": 6,
            "DesiredCapacity": 4,
            "TimeZone": "America/New_York"
        }
    ]
}
```
Se l’output include un campo `NextToken`, significa che sono presenti più azioni pianificate. Per ottenere le azioni pianificate aggiuntive, utilizza il valore di questo campo con l’opzione `--starting-token` in una chiamata successiva come descritto di seguito.  

```
aws autoscaling describe-scheduled-actions \
    --auto-scaling-group-name my-asg \
    --starting-token Z3M3LMPEXAMPLE
```
Per ulteriori informazioni, consulta [Dimensionamento programmato](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scheduled-scaling.html) nella *Guida per l’utente di Dimensionamento automatico Amazon EC2.*  
+  Per i dettagli sull'API, consulta [DescribeScheduledActions AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-scheduled-actions.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio descrive le azioni di dimensionamento pianificate del gruppo Auto Scaling specificato.**  

```
Get-ASScheduledAction -AutoScalingGroupName my-asg
```
**Output:**  

```
AutoScalingGroupName : my-asg
DesiredCapacity      : 10
EndTime              : 
MaxSize              : 
MinSize              : 
Recurrence           :
ScheduledActionARN   : arn:aws:autoscaling:us-west-2:123456789012:scheduledUpdateGroupAction:8a4c5f24-6ec6-4306-a2dd-f7
                       2c3af3a4d6:autoScalingGroupName/my-asg:scheduledActionName/myScheduledAction
ScheduledActionName  : myScheduledAction
StartTime            : 11/30/2015 8:00:00 AM
Time                 : 11/30/2015 8:00:00 AM
```
**Esempio 2: questo esempio descrive le azioni di dimensionamento pianificate specificate.**  

```
Get-ASScheduledAction -ScheduledActionName @("myScheduledScaleOut", "myScheduledScaleIn")
```
**Esempio 3: questo esempio descrive le azioni di dimensionamento pianificate che iniziano entro l’ora specificata.**  

```
Get-ASScheduledAction -StartTime "2015-12-01T08:00:00Z"
```
**Esempio 4: questo esempio descrive le azioni di dimensionamento pianificate che terminano entro l’ora specificata.**  

```
Get-ASScheduledAction -EndTime "2015-12-30T08:00:00Z"
```
**Esempio 5: questo esempio descrive le azioni di dimensionamento pianificate di tutti i gruppi Auto Scaling specificati.**  

```
Get-ASScheduledAction
```
+  Per i dettagli sull'API, vedere [DescribeScheduledActions](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio descrive le azioni di dimensionamento pianificate del gruppo Auto Scaling specificato.**  

```
Get-ASScheduledAction -AutoScalingGroupName my-asg
```
**Output:**  

```
AutoScalingGroupName : my-asg
DesiredCapacity      : 10
EndTime              : 
MaxSize              : 
MinSize              : 
Recurrence           :
ScheduledActionARN   : arn:aws:autoscaling:us-west-2:123456789012:scheduledUpdateGroupAction:8a4c5f24-6ec6-4306-a2dd-f7
                       2c3af3a4d6:autoScalingGroupName/my-asg:scheduledActionName/myScheduledAction
ScheduledActionName  : myScheduledAction
StartTime            : 11/30/2015 8:00:00 AM
Time                 : 11/30/2015 8:00:00 AM
```
**Esempio 2: questo esempio descrive le azioni di dimensionamento pianificate specificate.**  

```
Get-ASScheduledAction -ScheduledActionName @("myScheduledScaleOut", "myScheduledScaleIn")
```
**Esempio 3: questo esempio descrive le azioni di dimensionamento pianificate che iniziano entro l’ora specificata.**  

```
Get-ASScheduledAction -StartTime "2015-12-01T08:00:00Z"
```
**Esempio 4: questo esempio descrive le azioni di dimensionamento pianificate che terminano entro l’ora specificata.**  

```
Get-ASScheduledAction -EndTime "2015-12-30T08:00:00Z"
```
**Esempio 5: questo esempio descrive le azioni di dimensionamento pianificate di tutti i gruppi Auto Scaling specificati.**  

```
Get-ASScheduledAction
```
+  Per i dettagli sull'API, vedere [DescribeScheduledActions](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DescribeTags` con una CLI
<a name="auto-scaling_example_auto-scaling_DescribeTags_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeTags`.

------
#### [ CLI ]

**AWS CLI**  
**Come descrivere tutti i tag**  
Questo esempio descrive tutti i tag.  

```
aws autoscaling describe-tags
```
Output:  

```
{
    "Tags": [
        {
            "ResourceType": "auto-scaling-group",
            "ResourceId": "my-asg",
            "PropagateAtLaunch": true,
            "Value": "Research",
            "Key": "Dept"
        },
        {
            "ResourceType": "auto-scaling-group",
            "ResourceId": "my-asg",
            "PropagateAtLaunch": true,
            "Value": "WebServer",
            "Key": "Role"
        }
    ]
}
```
Per ulteriori informazioni, consulta [Tagging di gruppi e istanze Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-tagging.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 2: come descrivere i tag per un gruppo specificato**  
Per descrivere i tag di un gruppo Auto Scaling specifico, utilizza l’opzione `--filters`.  

```
aws autoscaling describe-tags --filters Name=auto-scaling-group,Values=my-asg
```
Per ulteriori informazioni, consulta [Tagging di gruppi e istanze Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-tagging.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 3: come descrivere il numero specificato di tag**  
Per restituire un numero specifico di tag, utilizza l’opzione `--max-items`.  

```
aws autoscaling describe-tags \
    --max-items 1
```
Se l’output include un campo `NextToken`, significa che sono presenti più tag. Per ottenere i tag aggiuntivi, utilizza il valore di questo campo con l’opzione `--starting-token` in una chiamata successiva come descritto di seguito.  

```
aws autoscaling describe-tags \
    --filters Name=auto-scaling-group,Values=my-asg \
    --starting-token Z3M3LMPEXAMPLE
```
Per ulteriori informazioni, consulta [Tagging di gruppi e istanze Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-tagging.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [DescribeTags AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-tags.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio descrive i tag con un valore di chiave “myTag” o “myTag2”. I valori possibili per il nome del filtro sono auto-scaling-group '', 'key', 'value' e 'propagate-at-launch'. La sintassi utilizzata da questo esempio richiede la PowerShell versione 3 o successiva.**  

```
Get-ASTag -Filter @( @{ Name="key"; Values=@("myTag", "myTag2") } )
```
**Output:**  

```
Key               : myTag2
PropagateAtLaunch : True
ResourceId        : my-asg
ResourceType      : auto-scaling-group
Value             : myTagValue2

Key               : myTag
PropagateAtLaunch : True
ResourceId        : my-asg
ResourceType      : auto-scaling-group
Value             : myTagValue
```
**Esempio 2: con la PowerShell versione 2, è necessario utilizzare New-Object per creare il filtro per il parametro Filter.**  

```
$keys = New-Object string[] 2
$keys[0] = "myTag"
$keys[1] = "myTag2"
$filter = New-Object Amazon.AutoScaling.Model.Filter
$filter.Name = "key"
$filter.Values = $keys
Get-ASTag -Filter @( $filter )
```
**Esempio 3: questo esempio descrive tutti i tag per tutti i gruppi Auto Scaling.**  

```
Get-ASTag
```
+  Per i dettagli sull'API, vedere [DescribeTags](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference* (V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio descrive i tag con un valore di chiave “myTag” o “myTag2”. I valori possibili per il nome del filtro sono auto-scaling-group '', 'key', 'value' e 'propagate-at-launch'. La sintassi utilizzata da questo esempio richiede la PowerShell versione 3 o successiva.**  

```
Get-ASTag -Filter @( @{ Name="key"; Values=@("myTag", "myTag2") } )
```
**Output:**  

```
Key               : myTag2
PropagateAtLaunch : True
ResourceId        : my-asg
ResourceType      : auto-scaling-group
Value             : myTagValue2

Key               : myTag
PropagateAtLaunch : True
ResourceId        : my-asg
ResourceType      : auto-scaling-group
Value             : myTagValue
```
**Esempio 2: con la PowerShell versione 2, è necessario utilizzare New-Object per creare il filtro per il parametro Filter.**  

```
$keys = New-Object string[] 2
$keys[0] = "myTag"
$keys[1] = "myTag2"
$filter = New-Object Amazon.AutoScaling.Model.Filter
$filter.Name = "key"
$filter.Values = $keys
Get-ASTag -Filter @( $filter )
```
**Esempio 3: questo esempio descrive tutti i tag per tutti i gruppi Auto Scaling.**  

```
Get-ASTag
```
+  Per i dettagli sull'API, vedere [DescribeTags](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference* (V5). 

------

# Utilizzare `DescribeTerminationPolicyTypes` con una CLI
<a name="auto-scaling_example_auto-scaling_DescribeTerminationPolicyTypes_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DescribeTerminationPolicyTypes`.

------
#### [ CLI ]

**AWS CLI**  
**Come descrivere i tipi di policy di terminazione disponibili**  
Questo esempio descrive i tipi di policy di terminazione disponibili.  

```
aws autoscaling describe-termination-policy-types
```
Output:  

```
{
    "TerminationPolicyTypes": [
        "AllocationStrategy",
        "ClosestToNextInstanceHour",
        "Default",
        "NewestInstance",
        "OldestInstance",
        "OldestLaunchConfiguration",
        "OldestLaunchTemplate"
    ]
}
```
Per ulteriori informazioni, consulta [Controllo delle istanze Auto Scaling che vengono terminate durante il dimensionamento](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-instance-termination.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [DescribeTerminationPolicyTypes AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/describe-termination-policy-types.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio elenca le policy di terminazione supportate da Auto Scaling.**  

```
Get-ASTerminationPolicyType
```
**Output:**  

```
ClosestToNextInstanceHour
Default
NewestInstance
OldestInstance
OldestLaunchConfiguration
```
+  Per i dettagli sull'API, vedere [DescribeTerminationPolicyTypes](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio elenca le policy di terminazione supportate da Auto Scaling.**  

```
Get-ASTerminationPolicyType
```
**Output:**  

```
ClosestToNextInstanceHour
Default
NewestInstance
OldestInstance
OldestLaunchConfiguration
```
+  Per i dettagli sull'API, vedere [DescribeTerminationPolicyTypes](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DetachInstances` con una CLI
<a name="auto-scaling_example_auto-scaling_DetachInstances_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DetachInstances`.

------
#### [ CLI ]

**AWS CLI**  
**Come scollegare un’istanza da un gruppo Auto Scaling**  
Questo esempio scollega l’istanza specificata dal gruppo Auto Scaling specificato.  

```
aws autoscaling detach-instances \
    --instance-ids i-030017cfa84b20135 \
    --auto-scaling-group-name my-asg \
    --should-decrement-desired-capacity
```
Output:  

```
{
    "Activities": [
        {
            "ActivityId": "5091cb52-547a-47ce-a236-c9ccbc2cb2c9",
            "AutoScalingGroupName": "my-asg",
            "Description": "Detaching EC2 instance: i-030017cfa84b20135",
            "Cause": "At 2020-10-31T17:35:04Z instance i-030017cfa84b20135 was detached in response to a user request, shrinking the capacity from 2 to 1.",
            "StartTime": "2020-04-12T15:02:16.179Z",
            "StatusCode": "InProgress",
            "Progress": 50,
            "Details": "{\"Subnet ID\":\"subnet-6194ea3b\",\"Availability Zone\":\"us-west-2c\"}"
        }
    ]
}
```
+  Per i dettagli sull'API, consulta [DetachInstances AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/detach-instances.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio scollega l’istanza specificata dal gruppo Auto Scaling specificato e diminuisce la capacità desiderata in modo che Auto Scaling non avvii un’istanza di sostituzione.**  

```
Dismount-ASInstance -InstanceId i-93633f9b -AutoScalingGroupName my-asg -ShouldDecrementDesiredCapacity $true
```
**Output:**  

```
ActivityId           : 06733445-ce94-4039-be1b-b9f1866e276e
AutoScalingGroupName : my-asg
Cause                : At 2015-11-20T22:34:59Z instance i-93633f9b was detached in response to a user request, shrinking
                       the capacity from 2 to 1.
Description          : Detaching EC2 instance: i-93633f9b
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 
Progress             : 50
StartTime            : 11/20/2015 2:34:59 PM
StatusCode           : InProgress
StatusMessage        :
```
**Esempio 2: questo esempio scollega l’istanza specificata dal gruppo Auto Scaling specificato senza diminuire la capacità desiderata. Auto Scaling avvia un’istanza di sostituzione.**  

```
Dismount-ASInstance -InstanceId i-7bf746a2 -AutoScalingGroupName my-asg -ShouldDecrementDesiredCapacity $false
```
**Output:**  

```
ActivityId           : f43a3cd4-d38c-4af7-9fe0-d76ec2307b6d
AutoScalingGroupName : my-asg
Cause                : At 2015-11-20T22:34:59Z instance i-7bf746a2 was detached in response to a user request.
Description          : Detaching EC2 instance: i-7bf746a2
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 
Progress             : 50
StartTime            : 11/20/2015 2:34:59 PM
StatusCode           : InProgress
StatusMessage        :
```
+  Per i dettagli sull'API, vedere [DetachInstances](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio scollega l’istanza specificata dal gruppo Auto Scaling specificato e diminuisce la capacità desiderata in modo che Auto Scaling non avvii un’istanza di sostituzione.**  

```
Dismount-ASInstance -InstanceId i-93633f9b -AutoScalingGroupName my-asg -ShouldDecrementDesiredCapacity $true
```
**Output:**  

```
ActivityId           : 06733445-ce94-4039-be1b-b9f1866e276e
AutoScalingGroupName : my-asg
Cause                : At 2015-11-20T22:34:59Z instance i-93633f9b was detached in response to a user request, shrinking
                       the capacity from 2 to 1.
Description          : Detaching EC2 instance: i-93633f9b
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 
Progress             : 50
StartTime            : 11/20/2015 2:34:59 PM
StatusCode           : InProgress
StatusMessage        :
```
**Esempio 2: questo esempio scollega l’istanza specificata dal gruppo Auto Scaling specificato senza diminuire la capacità desiderata. Auto Scaling avvia un’istanza di sostituzione.**  

```
Dismount-ASInstance -InstanceId i-7bf746a2 -AutoScalingGroupName my-asg -ShouldDecrementDesiredCapacity $false
```
**Output:**  

```
ActivityId           : f43a3cd4-d38c-4af7-9fe0-d76ec2307b6d
AutoScalingGroupName : my-asg
Cause                : At 2015-11-20T22:34:59Z instance i-7bf746a2 was detached in response to a user request.
Description          : Detaching EC2 instance: i-7bf746a2
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 
Progress             : 50
StartTime            : 11/20/2015 2:34:59 PM
StatusCode           : InProgress
StatusMessage        :
```
+  Per i dettagli sull'API, vedere [DetachInstances](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `DetachLoadBalancers` con una CLI
<a name="auto-scaling_example_auto-scaling_DetachLoadBalancers_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DetachLoadBalancers`.

------
#### [ CLI ]

**AWS CLI**  
**Come scollegare un Classic Load Balancer da un gruppo Auto Scaling**  
Questo esempio scollega il Classic Load Balancer specificato dal gruppo Auto Scaling specificato.  

```
aws autoscaling detach-load-balancers \
    --load-balancer-names my-load-balancer \
    --auto-scaling-group-name my-asg
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Come collegare un bilanciatore del carico al gruppo Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/attach-load-balancer-asg.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [DetachLoadBalancers AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/detach-load-balancers.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio scollega il bilanciatore del carico specificato dal gruppo Auto Scaling specificato.**  

```
Dismount-ASLoadBalancer -LoadBalancerName my-lb -AutoScalingGroupName my-asg
```
+  Per i dettagli sull'API, vedere [DetachLoadBalancers](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio scollega il bilanciatore del carico specificato dal gruppo Auto Scaling specificato.**  

```
Dismount-ASLoadBalancer -LoadBalancerName my-lb -AutoScalingGroupName my-asg
```
+  Per i dettagli sull'API, vedere [DetachLoadBalancers](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzo `DisableMetricsCollection` con un AWS SDK o una CLI
<a name="auto-scaling_example_auto-scaling_DisableMetricsCollection_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `DisableMetricsCollection`.

Gli esempi di operazioni sono estratti di codice da programmi più grandi e devono essere eseguiti nel contesto. È possibile visualizzare questa operazione nel contesto nel seguente esempio di codice: 
+  [Informazioni di base](auto-scaling_example_auto-scaling_Scenario_GroupsAndInstances_section.md) 

------
#### [ .NET ]

**SDK per .NET (v4)**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv4/AutoScaling#code-examples). 

```
    /// <summary>
    /// Disable the collection of metric data for an Amazon EC2 Auto Scaling
    /// group.
    /// </summary>
    /// <param name="groupName">The name of the Auto Scaling group.</param>
    /// <returns>A Boolean value that indicates the success or failure of
    /// the operation.</returns>
    public async Task<bool> DisableMetricsCollectionAsync(string groupName)
    {
        var request = new DisableMetricsCollectionRequest
        {
            AutoScalingGroupName = groupName,
        };

        var response = await _amazonAutoScaling.DisableMetricsCollectionAsync(request);
        return response.HttpStatusCode == System.Net.HttpStatusCode.OK;
    }
```
+  Per i dettagli sull'API, [DisableMetricsCollection](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/DisableMetricsCollection)consulta *AWS SDK per .NET API Reference*. 

------
#### [ C\$1\$1 ]

**SDK per C\$1\$1**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/autoscaling#code-examples). 

```
        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

    Aws::AutoScaling::AutoScalingClient autoScalingClient(clientConfig);

        Aws::AutoScaling::Model::DisableMetricsCollectionRequest request;
        request.SetAutoScalingGroupName(groupName);

        Aws::AutoScaling::Model::DisableMetricsCollectionOutcome outcome =
                autoScalingClient.DisableMetricsCollection(request);

        if (outcome.IsSuccess()) {
            std::cout << "Metrics collection has been disabled." << std::endl;
        }
        else {
            std::cerr << "Error with AutoScaling::DisableMetricsCollection. "
                      << outcome.GetError().GetMessage()
                      << std::endl;

        }
```
+  Per i dettagli sull'API, [DisableMetricsCollection](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/DisableMetricsCollection)consulta *AWS SDK per C\$1\$1 API Reference*. 

------
#### [ CLI ]

**AWS CLI**  
**Come disabilitare la raccolta delle metriche per un gruppo Auto Scaling**  
In questo esempio viene disabilitata la raccolta della metrica `GroupDesiredCapacity` per il gruppo Auto Scaling specificato.  

```
aws autoscaling disable-metrics-collection \
    --auto-scaling-group-name my-asg \
    --metrics GroupDesiredCapacity
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta i [ CloudWatch parametri di monitoraggio per i gruppi e le istanze di Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-instance-monitoring.html) nella Guida per *l'utente di Amazon EC2 Auto Scaling*.  
+  *Per i dettagli sull'API, consulta Command Reference. [DisableMetricsCollection](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/disable-metrics-collection.html)AWS CLI * 

------
#### [ Java ]

**SDK per Java 2.x**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/autoscale#code-examples). 

```
    public static void disableMetricsCollection(AutoScalingClient autoScalingClient, String groupName) {
        try {
            DisableMetricsCollectionRequest disableMetricsCollectionRequest = DisableMetricsCollectionRequest.builder()
                    .autoScalingGroupName(groupName)
                    .metrics("GroupMaxSize")
                    .build();

            autoScalingClient.disableMetricsCollection(disableMetricsCollectionRequest);
            System.out.println("The disable metrics collection operation was successful");

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
```
+  Per i dettagli sull'API, [DisableMetricsCollection](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/DisableMetricsCollection)consulta *AWS SDK for Java 2.x API Reference*. 

------
#### [ Kotlin ]

**SDK per Kotlin**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/autoscale#code-examples). 

```
suspend fun disableMetricsCollection(groupName: String) {
    val disableMetricsCollectionRequest =
        DisableMetricsCollectionRequest {
            autoScalingGroupName = groupName
            metrics = listOf("GroupMaxSize")
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        autoScalingClient.disableMetricsCollection(disableMetricsCollectionRequest)
        println("The disable metrics collection operation was successful")
    }
}
```
+  Per i dettagli sull'API, [DisableMetricsCollection](https://sdk.amazonaws.com/kotlin/api/latest/index.html)consulta *AWS SDK for Kotlin* API reference. 

------
#### [ PHP ]

**SDK per PHP**  
 C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code/auto-scaling#code-examples). 

```
    public function disableMetricsCollection($autoScalingGroupName)
    {
        return $this->autoScalingClient->disableMetricsCollection([
            'AutoScalingGroupName' => $autoScalingGroupName,
        ]);
    }
```
+  Per i dettagli sull'API, [DisableMetricsCollection](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/DisableMetricsCollection)consulta *AWS SDK per PHP API Reference*. 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio disabilita il monitoraggio dei parametri specificati per il gruppo Auto Scaling specificato.**  

```
Disable-ASMetricsCollection -AutoScalingGroupName my-asg -Metric @("GroupMinSize", "GroupMaxSize")
```
**Esempio 2: questo esempio disabilita il monitoraggio di tutte le metriche specificate per il gruppo Auto Scaling specificato.**  

```
Disable-ASMetricsCollection -AutoScalingGroupName my-asg
```
+  Per i dettagli sull'API, vedere [DisableMetricsCollection](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio disabilita il monitoraggio dei parametri specificati per il gruppo Auto Scaling specificato.**  

```
Disable-ASMetricsCollection -AutoScalingGroupName my-asg -Metric @("GroupMinSize", "GroupMaxSize")
```
**Esempio 2: questo esempio disabilita il monitoraggio di tutte le metriche specificate per il gruppo Auto Scaling specificato.**  

```
Disable-ASMetricsCollection -AutoScalingGroupName my-asg
```
+  Per i dettagli sull'API, vedere [DisableMetricsCollection](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------
#### [ Python ]

**SDK per Python (Boto3)**  
 C'è altro su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/auto-scaling#code-examples). 

```
class AutoScalingWrapper:
    """Encapsulates Amazon EC2 Auto Scaling actions."""

    def __init__(self, autoscaling_client):
        """
        :param autoscaling_client: A Boto3 Amazon EC2 Auto Scaling client.
        """
        self.autoscaling_client = autoscaling_client


    def disable_metrics(self, group_name: str) -> Dict[str, Any]:
        """
        Stops CloudWatch metric collection for the Auto Scaling group.

        :param group_name: The name of the group.
        :return: A dictionary with the response from disabling the metrics collection.
        :raises ClientError: If there is an error disabling metrics collection.
        """
        try:
            response = self.autoscaling_client.disable_metrics_collection(
                AutoScalingGroupName=group_name
            )
            logger.info(
                f"Successfully disabled metrics collection for group '{group_name}'."
            )
            return response
        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            logger.error(
                f"Couldn't disable metrics for group '{group_name}'. Error code: {error_code}, Message: {err.response['Error']['Message']}"
            )

            if error_code == "ResourceContentionFault":
                logger.error(
                    f"There is a conflict with another operation that is modifying the Auto Scaling group '{group_name}'. "
                    "Please try again later."
                )
            raise
```
+  Per i dettagli sull'API, consulta [DisableMetricsCollection AWS](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/DisableMetricsCollection)*SDK for Python (Boto3) API Reference*. 

------
#### [ Rust ]

**SDK per Rust**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/rustv1/examples/auto-scaling#code-examples). 

```
        // If this fails it's fine, just means there are extra cloudwatch metrics events for the scale-down.
        let _ = self
            .autoscaling
            .disable_metrics_collection()
            .auto_scaling_group_name(self.auto_scaling_group_name.clone())
            .send()
            .await;
```
+  Per i dettagli sulle API, consulta il *riferimento [DisableMetricsCollection](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.disable_metrics_collection)all'API AWS SDK for Rust*. 

------
#### [ SAP ABAP ]

**SDK per SAP ABAP**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/sap-abap/services/asc#code-examples). 

```
    " Example: iv_group_name = 'my-auto-scaling-group'
    
    TRY.
        ao_asc->disablemetricscollection(
          iv_autoscalinggroupname = iv_group_name ).

        MESSAGE 'Metrics collection disabled successfully' TYPE 'I'.

      CATCH /aws1/cx_ascresrccontionfault INTO DATA(lo_contention).
        RAISE EXCEPTION lo_contention.
      CATCH /aws1/cx_rt_generic INTO DATA(lo_generic_exception).
        RAISE EXCEPTION lo_generic_exception.
    ENDTRY.
```
+  Per i dettagli sulle API, [DisableMetricsCollection](https://docs.aws.amazon.com/sdk-for-sap-abap/v1/api/latest/index.html)consulta *AWS SDK for SAP ABAP* API reference. 

------

# Utilizzo `EnableMetricsCollection` con un AWS SDK o una CLI
<a name="auto-scaling_example_auto-scaling_EnableMetricsCollection_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `EnableMetricsCollection`.

Gli esempi di operazioni sono estratti di codice da programmi più grandi e devono essere eseguiti nel contesto. È possibile visualizzare questa operazione nel contesto nel seguente esempio di codice: 
+  [Informazioni di base](auto-scaling_example_auto-scaling_Scenario_GroupsAndInstances_section.md) 

------
#### [ .NET ]

**SDK per .NET (v4)**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv4/AutoScaling#code-examples). 

```
    /// <summary>
    /// Enable the collection of metric data for an Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name of the Auto Scaling group.</param>
    /// <returns>A Boolean value indicating the success of the action.</returns>
    public async Task<bool> EnableMetricsCollectionAsync(string groupName)
    {
        var listMetrics = new List<string>
            {
                "GroupMaxSize",
            };

        var collectionRequest = new EnableMetricsCollectionRequest
        {
            AutoScalingGroupName = groupName,
            Metrics = listMetrics,
            Granularity = "1Minute",
        };

        var response = await _amazonAutoScaling.EnableMetricsCollectionAsync(collectionRequest);
        return response.HttpStatusCode == System.Net.HttpStatusCode.OK;
    }
```
+  Per i dettagli sull'API, [EnableMetricsCollection](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/EnableMetricsCollection)consulta *AWS SDK per .NET API Reference*. 

------
#### [ C\$1\$1 ]

**SDK per C\$1\$1**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/autoscaling#code-examples). 

```
        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

    Aws::AutoScaling::AutoScalingClient autoScalingClient(clientConfig);

        Aws::AutoScaling::Model::EnableMetricsCollectionRequest request;
        request.SetAutoScalingGroupName(groupName);

        request.AddMetrics("GroupMinSize");
        request.AddMetrics("GroupMaxSize");
        request.AddMetrics("GroupDesiredCapacity");
        request.AddMetrics("GroupInServiceInstances");
        request.AddMetrics("GroupTotalInstances");
        request.SetGranularity("1Minute");

        Aws::AutoScaling::Model::EnableMetricsCollectionOutcome outcome =
                autoScalingClient.EnableMetricsCollection(request);
        if (outcome.IsSuccess()) {
            std::cout << "Auto Scaling metrics have been enabled."
                      << std::endl;
        }
        else {
            std::cerr << "Error with AutoScaling::EnableMetricsCollection. "
                      << outcome.GetError().GetMessage()
                      << std::endl;

        }
```
+  Per i dettagli sull'API, [EnableMetricsCollection](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/EnableMetricsCollection)consulta *AWS SDK per C\$1\$1 API Reference*. 

------
#### [ CLI ]

**AWS CLI**  
**Esempio 1: come abilitare la raccolta delle metriche di un gruppo Auto Scaling**  
Questo esempio abilita la raccolta dei dati per il gruppo Auto Scaling specificato.  

```
aws autoscaling enable-metrics-collection \
    --auto-scaling-group-name my-asg \
    --granularity "1Minute"
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta i [ CloudWatch parametri di monitoraggio per i gruppi e le istanze di Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-instance-monitoring.html) nella Guida per *l'utente di Amazon EC2 Auto Scaling*.  
**Esempio 2: come raccogliere i dati della metrica specificata per un gruppo Auto Scaling**  
Per raccogliere i dati per una metrica specifica, utilizza l’opzione `--metrics`.  

```
aws autoscaling enable-metrics-collection \
    --auto-scaling-group-name my-asg \
    --metrics GroupDesiredCapacity --granularity "1Minute"
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta i [ CloudWatch parametri di monitoraggio per i gruppi e le istanze di Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-instance-monitoring.html) nella Guida per *l'utente di Amazon EC2 Auto Scaling*.  
+  *Per i dettagli sull'API, consulta Command Reference. [EnableMetricsCollection](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/enable-metrics-collection.html)AWS CLI * 

------
#### [ Java ]

**SDK per Java 2.x**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/autoscale#code-examples). 

```
    public static void enableMetricsCollection(AutoScalingClient autoScalingClient, String groupName) {
        try {
            EnableMetricsCollectionRequest collectionRequest = EnableMetricsCollectionRequest.builder()
                    .autoScalingGroupName(groupName)
                    .metrics("GroupMaxSize")
                    .granularity("1Minute")
                    .build();

            autoScalingClient.enableMetricsCollection(collectionRequest);
            System.out.println("The enable metrics collection operation was successful");

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
```
+  Per i dettagli sull'API, [EnableMetricsCollection](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/EnableMetricsCollection)consulta *AWS SDK for Java 2.x API Reference*. 

------
#### [ Kotlin ]

**SDK per Kotlin**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/autoscale#code-examples). 

```
suspend fun enableMetricsCollection(groupName: String?) {
    val collectionRequest =
        EnableMetricsCollectionRequest {
            autoScalingGroupName = groupName
            metrics = listOf("GroupMaxSize")
            granularity = "1Minute"
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        autoScalingClient.enableMetricsCollection(collectionRequest)
        println("The enable metrics collection operation was successful")
    }
}
```
+  Per i dettagli sull'API, [EnableMetricsCollection](https://sdk.amazonaws.com/kotlin/api/latest/index.html)consulta *AWS SDK for Kotlin* API reference. 

------
#### [ PHP ]

**SDK per PHP**  
 C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code/auto-scaling#code-examples). 

```
    public function enableMetricsCollection($autoScalingGroupName, $granularity)
    {
        return $this->autoScalingClient->enableMetricsCollection([
            'AutoScalingGroupName' => $autoScalingGroupName,
            'Granularity' => $granularity,
        ]);
    }
```
+  Per i dettagli sull'API, [EnableMetricsCollection](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/EnableMetricsCollection)consulta *AWS SDK per PHP API Reference*. 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio abilita il monitoraggio delle metriche specificate per il gruppo Auto Scaling specificato.**  

```
Enable-ASMetricsCollection  -Metric @("GroupMinSize", "GroupMaxSize") -AutoScalingGroupName my-asg -Granularity 1Minute
```
**Esempio 2: questo esempio abilita il monitoraggio di tutte le metriche del gruppo Auto Scaling specificato.**  

```
Enable-ASMetricsCollection -AutoScalingGroupName my-asg -Granularity 1Minute
```
+  Per i dettagli sull'API, vedere [EnableMetricsCollection](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio abilita il monitoraggio delle metriche specificate per il gruppo Auto Scaling specificato.**  

```
Enable-ASMetricsCollection  -Metric @("GroupMinSize", "GroupMaxSize") -AutoScalingGroupName my-asg -Granularity 1Minute
```
**Esempio 2: questo esempio abilita il monitoraggio di tutte le metriche del gruppo Auto Scaling specificato.**  

```
Enable-ASMetricsCollection -AutoScalingGroupName my-asg -Granularity 1Minute
```
+  Per i dettagli sull'API, vedere [EnableMetricsCollection](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------
#### [ Python ]

**SDK per Python (Boto3)**  
 C'è altro su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/auto-scaling#code-examples). 

```
class AutoScalingWrapper:
    """Encapsulates Amazon EC2 Auto Scaling actions."""

    def __init__(self, autoscaling_client):
        """
        :param autoscaling_client: A Boto3 Amazon EC2 Auto Scaling client.
        """
        self.autoscaling_client = autoscaling_client


    def enable_metrics(self, group_name: str, metrics: List[str]) -> Dict[str, Any]:
        """
        Enables CloudWatch metric collection for Amazon EC2 Auto Scaling activities.

        :param group_name: The name of the group to enable.
        :param metrics: A list of metrics to collect.
        :return: A dictionary with the response from enabling the metrics collection.
        :raises ClientError: If there is an error enabling metrics collection.
        """
        try:
            response = self.autoscaling_client.enable_metrics_collection(
                AutoScalingGroupName=group_name, Metrics=metrics, Granularity="1Minute"
            )
            logger.info(
                f"Successfully enabled metrics for Auto Scaling group '{group_name}'."
            )

        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            logger.error(
                f"Couldn't enable metrics on '{group_name}'. Error code: {error_code}, Message: {err.response['Error']['Message']}"
            )

            if error_code == "ResourceContentionFault":
                logger.error(
                    f"There is a conflict with another operation that is modifying the Auto Scaling group '{group_name}'. "
                    "Please try again later."
                )
            elif error_code == "InvalidParameterCombination":
                logger.error(
                    f"The combination of parameters provided for enabling metrics on '{group_name}' is not valid. "
                    "Please check the parameters and try again."
                )
            raise
        else:
            return response
```
+  Per i dettagli sull'API, consulta [EnableMetricsCollection AWS](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/EnableMetricsCollection)*SDK for Python (Boto3) API Reference*. 

------
#### [ Rust ]

**SDK per Rust**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/rustv1/examples/auto-scaling#code-examples). 

```
        let enable_metrics_collection = autoscaling
            .enable_metrics_collection()
            .auto_scaling_group_name(auto_scaling_group_name.as_str())
            .granularity("1Minute")
            .set_metrics(Some(vec![
                String::from("GroupMinSize"),
                String::from("GroupMaxSize"),
                String::from("GroupDesiredCapacity"),
                String::from("GroupInServiceInstances"),
                String::from("GroupTotalInstances"),
            ]))
            .send()
            .await;
```
+  Per i dettagli sulle API, consulta il *riferimento [EnableMetricsCollection](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.enable_metrics_collection)all'API AWS SDK for Rust*. 

------
#### [ SAP ABAP ]

**SDK per SAP ABAP**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/sap-abap/services/asc#code-examples). 

```
    " Example: iv_group_name = 'my-auto-scaling-group'
    " Example: it_metrics contains list of metrics like 'GroupMinSize', 'GroupMaxSize', etc.
    
    TRY.
        ao_asc->enablemetricscollection(
          iv_autoscalinggroupname = iv_group_name
          it_metrics = it_metrics
          iv_granularity = '1Minute' ).

        MESSAGE 'Metrics collection enabled successfully' TYPE 'I'.

      CATCH /aws1/cx_ascresrccontionfault INTO DATA(lo_contention).
        RAISE EXCEPTION lo_contention.
      CATCH /aws1/cx_rt_generic INTO DATA(lo_generic_exception).
        RAISE EXCEPTION lo_generic_exception.
    ENDTRY.
```
+  Per i dettagli sulle API, [EnableMetricsCollection](https://docs.aws.amazon.com/sdk-for-sap-abap/v1/api/latest/index.html)consulta *AWS SDK for SAP ABAP* API reference. 

------

# Utilizzare `EnterStandby` con una CLI
<a name="auto-scaling_example_auto-scaling_EnterStandby_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `EnterStandby`.

------
#### [ CLI ]

**AWS CLI**  
**Come spostare le istanze in modalità standby**  
Questo esempio mette l’istanza specificata in modalità standby. Ciò è utile per aggiornare o risolvere i problemi di un’istanza attualmente in servizio.  

```
aws autoscaling enter-standby \
    --instance-ids i-061c63c5eb45f0416 \
    --auto-scaling-group-name my-asg \
    --should-decrement-desired-capacity
```
Output:  

```
{
    "Activities": [
        {
            "ActivityId": "ffa056b4-6ed3-41ba-ae7c-249dfae6eba1",
            "AutoScalingGroupName": "my-asg",
            "Description": "Moving EC2 instance to Standby: i-061c63c5eb45f0416",
            "Cause": "At 2020-10-31T20:31:00Z instance i-061c63c5eb45f0416 was moved to standby in response to a user request, shrinking the capacity from 1 to 0.",
            "StartTime": "2020-10-31T20:31:00.949Z",
            "StatusCode": "InProgress",
            "Progress": 50,
            "Details": "{\"Subnet ID\":\"subnet-6194ea3b\",\"Availability Zone\":\"us-west-2c\"}"
        }
    ]
}
```
Per ulteriori informazioni, consulta [Ciclo di vita dell’istanza Amazon EC2 Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/detach-instance-asg.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [EnterStandby AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/enter-standby.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio mette l’istanza specificata in modalità standby e diminuisce la capacità desiderata in modo che Auto Scaling non avvii un’istanza di sostituzione.**  

```
Enter-ASStandby -InstanceId i-93633f9b -AutoScalingGroupName my-asg -ShouldDecrementDesiredCapacity $true
```
**Output:**  

```
ActivityId           : e36a5a54-ced6-4df8-bd19-708e2a59a649
AutoScalingGroupName : my-asg
Cause                : At 2015-11-22T15:48:06Z instance i-95b8484f was moved to standby in response to a user request,
                       shrinking the capacity from 2 to 1.
Description          : Moving EC2 instance to Standby: i-95b8484f
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 
Progress             : 50
StartTime            : 11/22/2015 7:48:06 AM
StatusCode           : InProgress
StatusMessage        :
```
**Esempio 2: questo esempio mette l’istanza specificata in modalità standby senza diminuire la capacità desiderata. Auto Scaling avvia un’istanza di sostituzione.**  

```
Enter-ASStandby -InstanceId i-93633f9b -AutoScalingGroupName my-asg -ShouldDecrementDesiredCapacity $false
```
**Output:**  

```
ActivityId           : e36a5a54-ced6-4df8-bd19-708e2a59a649
AutoScalingGroupName : my-asg
Cause                : At 2015-11-22T15:48:06Z instance i-95b8484f was moved to standby in response to a user request.
Description          : Moving EC2 instance to Standby: i-95b8484f
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 
Progress             : 50
StartTime            : 11/22/2015 7:48:06 AM
StatusCode           : InProgress
StatusMessage        :
```
+  Per i dettagli sull'API, vedere [EnterStandby](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio mette l’istanza specificata in modalità standby e diminuisce la capacità desiderata in modo che Auto Scaling non avvii un’istanza di sostituzione.**  

```
Enter-ASStandby -InstanceId i-93633f9b -AutoScalingGroupName my-asg -ShouldDecrementDesiredCapacity $true
```
**Output:**  

```
ActivityId           : e36a5a54-ced6-4df8-bd19-708e2a59a649
AutoScalingGroupName : my-asg
Cause                : At 2015-11-22T15:48:06Z instance i-95b8484f was moved to standby in response to a user request,
                       shrinking the capacity from 2 to 1.
Description          : Moving EC2 instance to Standby: i-95b8484f
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 
Progress             : 50
StartTime            : 11/22/2015 7:48:06 AM
StatusCode           : InProgress
StatusMessage        :
```
**Esempio 2: questo esempio mette l’istanza specificata in modalità standby senza diminuire la capacità desiderata. Auto Scaling avvia un’istanza di sostituzione.**  

```
Enter-ASStandby -InstanceId i-93633f9b -AutoScalingGroupName my-asg -ShouldDecrementDesiredCapacity $false
```
**Output:**  

```
ActivityId           : e36a5a54-ced6-4df8-bd19-708e2a59a649
AutoScalingGroupName : my-asg
Cause                : At 2015-11-22T15:48:06Z instance i-95b8484f was moved to standby in response to a user request.
Description          : Moving EC2 instance to Standby: i-95b8484f
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 
Progress             : 50
StartTime            : 11/22/2015 7:48:06 AM
StatusCode           : InProgress
StatusMessage        :
```
+  Per i dettagli sull'API, vedere [EnterStandby](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `ExecutePolicy` con una CLI
<a name="auto-scaling_example_auto-scaling_ExecutePolicy_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `ExecutePolicy`.

------
#### [ CLI ]

**AWS CLI**  
**Come eseguire una policy di dimensionamento**  
In questo esempio viene descritta la policy di dimensionamento denominata `my-step-scale-out-policy` per il gruppo Auto Scaling specificato.  

```
aws autoscaling execute-policy \
    --auto-scaling-group-name my-asg \
    --policy-name  my-step-scale-out-policy \
    --metric-value 95 \
    --breach-threshold 80
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Policy di dimensionamento per fasi e di dimensionamento semplice](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-scaling-simple-step.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [ExecutePolicy AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/execute-policy.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio esegue la policy specificata per il gruppo Auto Scaling specificato.**  

```
Start-ASPolicy -AutoScalingGroupName my-asg -PolicyName "myScaleInPolicy"
```
**Esempio 2: questo esempio esegue la policy specificata per il gruppo Auto Scaling specificato dopo aver atteso il raggiungimento del tempo di raffreddamento.**  

```
Start-ASPolicy -AutoScalingGroupName my-asg -PolicyName "myScaleInPolicy" -HonorCooldown $true
```
+  Per i dettagli sull'API, vedere [ExecutePolicy](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio esegue la policy specificata per il gruppo Auto Scaling specificato.**  

```
Start-ASPolicy -AutoScalingGroupName my-asg -PolicyName "myScaleInPolicy"
```
**Esempio 2: questo esempio esegue la policy specificata per il gruppo Auto Scaling specificato dopo aver atteso il raggiungimento del tempo di raffreddamento.**  

```
Start-ASPolicy -AutoScalingGroupName my-asg -PolicyName "myScaleInPolicy" -HonorCooldown $true
```
+  Per i dettagli sull'API, vedere [ExecutePolicy](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `ExitStandby` con una CLI
<a name="auto-scaling_example_auto-scaling_ExitStandby_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `ExitStandby`.

------
#### [ CLI ]

**AWS CLI**  
**Come impostare l’uscita delle istanze dalla modalità standby**  
Questo esempio imposta l’uscita dell’istanza specificata dalla modalità standby.  

```
aws autoscaling exit-standby \
    --instance-ids i-061c63c5eb45f0416 \
    --auto-scaling-group-name my-asg
```
Output:  

```
{
    "Activities": [
        {
            "ActivityId": "142928e1-a2dc-453a-9b24-b85ad6735928",
            "AutoScalingGroupName": "my-asg",
            "Description": "Moving EC2 instance out of Standby: i-061c63c5eb45f0416",
            "Cause": "At 2020-10-31T20:32:50Z instance i-061c63c5eb45f0416 was moved out of standby in response to a user request, increasing the capacity from 0 to 1.",
            "StartTime": "2020-10-31T20:32:50.222Z",
            "StatusCode": "PreInService",
            "Progress": 30,
            "Details": "{\"Subnet ID\":\"subnet-6194ea3b\",\"Availability Zone\":\"us-west-2c\"}"
        }
    ]
}
```
Per ulteriori informazioni, consulta [Rimozione temporanea di istanze dal gruppo Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-enter-exit-standby.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [ExitStandby AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/exit-standby.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio imposta l’uscita dell’istanza specificata dalla modalità standby.**  

```
Exit-ASStandby -InstanceId i-93633f9b -AutoScalingGroupName my-asg
```
**Output:**  

```
ActivityId           : 1833d3e8-e32f-454e-b731-0670ad4c6934
AutoScalingGroupName : my-asg
Cause                : At 2015-11-22T15:51:21Z instance i-95b8484f was moved out of standby in response to a user 
                       request, increasing the capacity from 1 to 2.
Description          : Moving EC2 instance out of Standby: i-95b8484f
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 
Progress             : 30
StartTime            : 11/22/2015 7:51:21 AM
StatusCode           : PreInService
StatusMessage        :
```
+  Per i dettagli sull'API, vedere [ExitStandby](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio imposta l’uscita dell’istanza specificata dalla modalità standby.**  

```
Exit-ASStandby -InstanceId i-93633f9b -AutoScalingGroupName my-asg
```
**Output:**  

```
ActivityId           : 1833d3e8-e32f-454e-b731-0670ad4c6934
AutoScalingGroupName : my-asg
Cause                : At 2015-11-22T15:51:21Z instance i-95b8484f was moved out of standby in response to a user 
                       request, increasing the capacity from 1 to 2.
Description          : Moving EC2 instance out of Standby: i-95b8484f
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 
Progress             : 30
StartTime            : 11/22/2015 7:51:21 AM
StatusCode           : PreInService
StatusMessage        :
```
+  Per i dettagli sull'API, vedere [ExitStandby](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `PutLifecycleHook` con una CLI
<a name="auto-scaling_example_auto-scaling_PutLifecycleHook_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `PutLifecycleHook`.

------
#### [ CLI ]

**AWS CLI**  
**Esempio 1: come creare un hook del ciclo di vita.**  
Questo esempio crea un hook del ciclo di vita che verrà invocato su tutte le nuove istanze avviate, con un timeout di 4800 secondi. Ciò è utile per mantenere le istanze in uno stato di attesa fino al termine degli script dei dati utente o per richiamare una funzione Lambda utilizzando AWS . EventBridge  

```
aws autoscaling put-lifecycle-hook \
    --auto-scaling-group-name my-asg \
    --lifecycle-hook-name my-launch-hook \
    --lifecycle-transition autoscaling:EC2_INSTANCE_LAUNCHING \
    --heartbeat-timeout 4800
```
Questo comando non produce alcun output. Se esiste già un hook del ciclo di vita con lo stesso nome, verrà sovrascritto dal nuovo hook del ciclo di vita.  
Per ulteriori informazioni, consulta [Hook del ciclo di vita di Amazon EC2 Auto Scaling ](https://docs.aws.amazon.com/autoscaling/ec2/userguide/lifecycle-hooks.html)nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 2: come inviare un messaggio e-mail tramite Amazon SNS per comunicare le transizioni di stato dell’istanza**  
Questo esempio crea un hook del ciclo di vita con l’argomento Amazon SNS e il ruolo IAM da utilizzare per ricevere una notifica all’avvio dell’istanza.  

```
aws autoscaling put-lifecycle-hook \
    --auto-scaling-group-name my-asg \
    --lifecycle-hook-name my-launch-hook \
    --lifecycle-transition autoscaling:EC2_INSTANCE_LAUNCHING \
    --notification-target-arn arn:aws:sns:us-west-2:123456789012:my-sns-topic \
    --role-arn arn:aws:iam::123456789012:role/my-auto-scaling-role
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Hook del ciclo di vita di Dimensionamento automatico Amazon EC2 ](https://docs.aws.amazon.com/autoscaling/ec2/userguide/lifecycle-hooks.html)nella *Guida per l’utente di Dimensionamento automatico Amazon EC2.*  
**Esempio 3: come pubblicare un messaggio in una coda Amazon SQS**  
Questo esempio crea un hook del ciclo di vita che pubblica un messaggio con metadati nella coda Amazon SQS specificata.  

```
aws autoscaling put-lifecycle-hook \
    --auto-scaling-group-name my-asg \
    --lifecycle-hook-name my-launch-hook \
    --lifecycle-transition autoscaling:EC2_INSTANCE_LAUNCHING \
    --notification-target-arn arn:aws:sqs:us-west-2:123456789012:my-sqs-queue \
    --role-arn arn:aws:iam::123456789012:role/my-notification-role \
    --notification-metadata "SQS message metadata"
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Hook del ciclo di vita di Dimensionamento automatico Amazon EC2 ](https://docs.aws.amazon.com/autoscaling/ec2/userguide/lifecycle-hooks.html)nella *Guida per l’utente di Dimensionamento automatico Amazon EC2.*  
+  *Per i dettagli sull'API, consulta [PutLifecycleHook](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/put-lifecycle-hook.html)Command Reference.AWS CLI * 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio aggiunge l’hook del ciclo di vita specificato al gruppo Auto Scaling specificato.**  

```
Write-ASLifecycleHook -AutoScalingGroupName my-asg -LifecycleHookName "myLifecycleHook" -LifecycleTransition "autoscaling:EC2_INSTANCE_LAUNCHING" -NotificationTargetARN "arn:aws:sns:us-west-2:123456789012:my-sns-topic" -RoleARN "arn:aws:iam::123456789012:role/my-iam-role"
```
+  Per i dettagli sull'API, vedere [PutLifecycleHook](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio aggiunge l’hook del ciclo di vita specificato al gruppo Auto Scaling specificato.**  

```
Write-ASLifecycleHook -AutoScalingGroupName my-asg -LifecycleHookName "myLifecycleHook" -LifecycleTransition "autoscaling:EC2_INSTANCE_LAUNCHING" -NotificationTargetARN "arn:aws:sns:us-west-2:123456789012:my-sns-topic" -RoleARN "arn:aws:iam::123456789012:role/my-iam-role"
```
+  Per i dettagli sull'API, vedere [PutLifecycleHook](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `PutNotificationConfiguration` con una CLI
<a name="auto-scaling_example_auto-scaling_PutNotificationConfiguration_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `PutNotificationConfiguration`.

------
#### [ CLI ]

**AWS CLI**  
**Come aggiungere una notifica**  
Questo esempio aggiunge la notifica specificata al gruppo Auto Scaling specificato.  

```
aws autoscaling put-notification-configuration \
    --auto-scaling-group-name my-asg \
    --topic-arn arn:aws:sns:us-west-2:123456789012:my-sns-topic \
    --notification-type autoscaling:TEST_NOTIFICATION
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta l’argomento relativo alla [ricezione di notifiche Amazon SNS quando il gruppo Auto Scaling viene ridimensionato](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ASGettingNotifications.html#as-configure-asg-for-sns) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [PutNotificationConfiguration AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/put-notification-configuration.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio configura il gruppo Auto Scaling specificato per inviare una notifica all’argomento SNS specificato quando avvia istanze EC2.**  

```
Write-ASNotificationConfiguration -AutoScalingGroupName my-asg -NotificationType "autoscaling:EC2_INSTANCE_LAUNCH" -TopicARN "arn:aws:sns:us-west-2:123456789012:my-topic"
```
**Esempio 2: questo esempio configura il gruppo Auto Scaling specificato per inviare una notifica all’argomento SNS specificato quando avvia o termina istanze EC2.**  

```
Write-ASNotificationConfiguration -AutoScalingGroupName my-asg -NotificationType @("autoscaling:EC2_INSTANCE_LAUNCH", "autoscaling:EC2_INSTANCE_TERMINATE") -TopicARN "arn:aws:sns:us-west-2:123456789012:my-topic"
```
+  Per i dettagli sull'API, vedere [PutNotificationConfiguration](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio configura il gruppo Auto Scaling specificato per inviare una notifica all’argomento SNS specificato quando avvia istanze EC2.**  

```
Write-ASNotificationConfiguration -AutoScalingGroupName my-asg -NotificationType "autoscaling:EC2_INSTANCE_LAUNCH" -TopicARN "arn:aws:sns:us-west-2:123456789012:my-topic"
```
**Esempio 2: questo esempio configura il gruppo Auto Scaling specificato per inviare una notifica all’argomento SNS specificato quando avvia o termina istanze EC2.**  

```
Write-ASNotificationConfiguration -AutoScalingGroupName my-asg -NotificationType @("autoscaling:EC2_INSTANCE_LAUNCH", "autoscaling:EC2_INSTANCE_TERMINATE") -TopicARN "arn:aws:sns:us-west-2:123456789012:my-topic"
```
+  Per i dettagli sull'API, vedere [PutNotificationConfiguration](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `PutScalingPolicy` con una CLI
<a name="auto-scaling_example_auto-scaling_PutScalingPolicy_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `PutScalingPolicy`.

------
#### [ CLI ]

**AWS CLI**  
**Come aggiungere una policy di dimensionamento con monitoraggio delle destinazioni a un gruppo Auto Scaling**  
L’esempio `put-scaling-policy` seguente applica una policy di dimensionamento con monitoraggio delle destinazioni al gruppo Auto Scaling specificato. L'output contiene i nomi ARNs e i nomi dei due CloudWatch allarmi creati per tuo conto. Se esiste già una policy di dimensionamento con lo stesso nome, tale policy verrà sovrascritta dalla nuova policy.  

```
aws autoscaling put-scaling-policy --auto-scaling-group-name my-asg \
  --policy-name alb1000-target-tracking-scaling-policy \
  --policy-type TargetTrackingScaling \
  --target-tracking-configuration file://config.json
```
Contenuto di `config.json`:  

```
{
     "TargetValue": 1000.0,
     "PredefinedMetricSpecification": {
          "PredefinedMetricType": "ALBRequestCountPerTarget",
          "ResourceLabel": "app/my-alb/778d41231b141a0f/targetgroup/my-alb-target-group/943f017f100becff"
     }
}
```
Output:  

```
{
     "PolicyARN": "arn:aws:autoscaling:region:account-id:scalingPolicy:228f02c2-c665-4bfd-aaac-8b04080bea3c:autoScalingGroupName/my-asg:policyName/alb1000-target-tracking-scaling-policy",
     "Alarms": [
         {
             "AlarmARN": "arn:aws:cloudwatch:region:account-id:alarm:TargetTracking-my-asg-AlarmHigh-fc0e4183-23ac-497e-9992-691c9980c38e",
             "AlarmName": "TargetTracking-my-asg-AlarmHigh-fc0e4183-23ac-497e-9992-691c9980c38e"
         },
         {
             "AlarmARN": "arn:aws:cloudwatch:region:account-id:alarm:TargetTracking-my-asg-AlarmLow-61a39305-ed0c-47af-bd9e-471a352ee1a2",
             "AlarmName": "TargetTracking-my-asg-AlarmLow-61a39305-ed0c-47af-bd9e-471a352ee1a2"
         }
     ]
 }
```
Per altri esempi, consulta [Example scaling policies for the AWS Command Line Interface (AWS CLI](https://docs.aws.amazon.com/autoscaling/ec2/userguide/examples-scaling-policies.html)) nella *Amazon EC2 Auto Scaling* User Guide.  
+  *Per i dettagli sull'API, consulta [PutScalingPolicy](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/put-scaling-policy.html)Command Reference.AWS CLI * 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio aggiunge la policy specificata al gruppo Auto Scaling specificato. Il tipo di regolazione specificato determina come interpretare il ScalingAdjustment parametro. Con 'ChangeInCapacity', un valore positivo aumenta la capacità del numero specificato di istanze e un valore negativo diminuisce la capacità del numero di istanze specificato.**  

```
Write-ASScalingPolicy -AutoScalingGroupName my-asg -AdjustmentType "ChangeInCapacity" -PolicyName "myScaleInPolicy" -ScalingAdjustment -1
```
**Output:**  

```
arn:aws:autoscaling:us-west-2:123456789012:scalingPolicy:aa3836ab-5462-42c7-adab-e1d769fc24ef:autoScalingGroupName/my-asg
:policyName/myScaleInPolicy
```
+  Per i dettagli sull'API, vedere [PutScalingPolicy](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference* (V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio aggiunge la policy specificata al gruppo Auto Scaling specificato. Il tipo di regolazione specificato determina come interpretare il ScalingAdjustment parametro. Con 'ChangeInCapacity', un valore positivo aumenta la capacità del numero specificato di istanze e un valore negativo diminuisce la capacità del numero di istanze specificato.**  

```
Write-ASScalingPolicy -AutoScalingGroupName my-asg -AdjustmentType "ChangeInCapacity" -PolicyName "myScaleInPolicy" -ScalingAdjustment -1
```
**Output:**  

```
arn:aws:autoscaling:us-west-2:123456789012:scalingPolicy:aa3836ab-5462-42c7-adab-e1d769fc24ef:autoScalingGroupName/my-asg
:policyName/myScaleInPolicy
```
+  Per i dettagli sull'API, vedere [PutScalingPolicy](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference* (V5). 

------

# Utilizzare `PutScheduledUpdateGroupAction` con una CLI
<a name="auto-scaling_example_auto-scaling_PutScheduledUpdateGroupAction_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `PutScheduledUpdateGroupAction`.

------
#### [ CLI ]

**AWS CLI**  
**Esempio 1: come aggiungere un’azione pianificata a un gruppo Auto Scaling.**  
Questo esempio aggiunge l’azione pianificata specificata al gruppo Auto Scaling specificato.  

```
aws autoscaling put-scheduled-update-group-action \
    --auto-scaling-group-name my-asg \
    --scheduled-action-name my-scheduled-action \
    --start-time "2023-05-12T08:00:00Z" \
    --min-size 2 \
    --max-size 6 \
    --desired-capacity 4
```
Questo comando non produce alcun output. Se esiste già un’azione pianificata con lo stesso nome, tale azione verrà sovrascritta dalla nuova azione pianificata.  
Per ulteriori informazioni, consulta [Dimensionamento pianificato](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scheduled-scaling.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 2: come specificare una pianificazione ricorrente**  
Questo esempio crea un’azione di dimensionamento pianificata in base a una pianificazione ricorrente la cui esecuzione è programmata alle 00:30 del primo gennaio, giugno e dicembre di ogni anno.  

```
aws autoscaling put-scheduled-update-group-action \
    --auto-scaling-group-name my-asg \
    --scheduled-action-name my-recurring-action \
    --recurrence "30 0 1 1,6,12 *" \
    --min-size 2 \
    --max-size 6 \
    --desired-capacity 4
```
Questo comando non produce alcun output. Se esiste già un’azione pianificata con lo stesso nome, tale azione verrà sovrascritta dalla nuova azione pianificata.  
Per ulteriori informazioni, consulta [Dimensionamento pianificato](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scheduled-scaling.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [PutScheduledUpdateGroupAction AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/put-scheduled-update-group-action.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio crea o aggiorna un’azione pianificata una tantum per modificare la capacità desiderata all’ora di inizio specificata.**  

```
Write-ASScheduledUpdateGroupAction -AutoScalingGroupName my-asg -ScheduledActionName "myScheduledAction" -StartTime "2015-12-01T00:00:00Z" -DesiredCapacity 10
```
+  Per i dettagli sull'API, vedere [PutScheduledUpdateGroupAction](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio crea o aggiorna un’azione pianificata una tantum per modificare la capacità desiderata all’ora di inizio specificata.**  

```
Write-ASScheduledUpdateGroupAction -AutoScalingGroupName my-asg -ScheduledActionName "myScheduledAction" -StartTime "2015-12-01T00:00:00Z" -DesiredCapacity 10
```
+  Per i dettagli sull'API, vedere [PutScheduledUpdateGroupAction](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `RecordLifecycleActionHeartbeat` con una CLI
<a name="auto-scaling_example_auto-scaling_RecordLifecycleActionHeartbeat_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `RecordLifecycleActionHeartbeat`.

------
#### [ CLI ]

**AWS CLI**  
**Come registrare l’heartbeat di un’azione del ciclo di vita**  
Questo esempio registra l’heartbeat di un’azione del ciclo di vita per mantenere l’istanza in sospeso.  

```
aws autoscaling record-lifecycle-action-heartbeat \
    --lifecycle-hook-name my-launch-hook \
    --auto-scaling-group-name my-asg \
    --lifecycle-action-token bcd2f1b8-9a78-44d3-8a7a-4dd07d7cf635
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Hook del ciclo di vita di Dimensionamento automatico Amazon EC2 ](https://docs.aws.amazon.com/autoscaling/ec2/userguide/lifecycle-hooks.html)nella *Guida per l’utente di Dimensionamento automatico Amazon EC2.*  
+  Per i dettagli sull'API, consulta [RecordLifecycleActionHeartbeat AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/record-lifecycle-action-heartbeat.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio registra un heartbeat per l’azione del ciclo di vita specificata. In questo modo l’istanza rimane in sospeso fino al completamento dell’azione personalizzata.**  

```
Write-ASLifecycleActionHeartbeat -AutoScalingGroupName my-asg -LifecycleHookName myLifecycleHook -LifecycleActionToken bcd2f1b8-9a78-44d3-8a7a-4dd07d7cf635
```
+  Per i dettagli sull'API, vedere [RecordLifecycleActionHeartbeat](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio registra un heartbeat per l’azione del ciclo di vita specificata. In questo modo l’istanza rimane in sospeso fino al completamento dell’azione personalizzata.**  

```
Write-ASLifecycleActionHeartbeat -AutoScalingGroupName my-asg -LifecycleHookName myLifecycleHook -LifecycleActionToken bcd2f1b8-9a78-44d3-8a7a-4dd07d7cf635
```
+  Per i dettagli sull'API, vedere [RecordLifecycleActionHeartbeat](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `ResumeProcesses` con una CLI
<a name="auto-scaling_example_auto-scaling_ResumeProcesses_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `ResumeProcesses`.

------
#### [ CLI ]

**AWS CLI**  
**Come riprendere i processi in sospeso**  
Questo esempio riprende il processo di dimensionamento automatico specificato per il gruppo Auto Scaling specificato.  

```
aws autoscaling resume-processes \
    --auto-scaling-group-name my-asg \
    --scaling-processes AlarmNotification
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Sospensione e ripresa dei processi di dimensionamento](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-suspend-resume-processes.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [ResumeProcesses AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/resume-processes.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio riprende il processo di dimensionamento automatico specificato per il gruppo Auto Scaling specificato.**  

```
Resume-ASProcess -AutoScalingGroupName my-asg -ScalingProcess "AlarmNotification"
```
**Esempio 2: questo esempio riprende i processi di dimensionamento automatico specificati per il gruppo Auto Scaling specificato.**  

```
Resume-ASProcess -AutoScalingGroupName my-asg
```
+  Per i dettagli sull'API, vedere [ResumeProcesses](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio riprende il processo di dimensionamento automatico specificato per il gruppo Auto Scaling specificato.**  

```
Resume-ASProcess -AutoScalingGroupName my-asg -ScalingProcess "AlarmNotification"
```
**Esempio 2: questo esempio riprende i processi di dimensionamento automatico specificati per il gruppo Auto Scaling specificato.**  

```
Resume-ASProcess -AutoScalingGroupName my-asg
```
+  Per i dettagli sull'API, vedere [ResumeProcesses](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzo `SetDesiredCapacity` con un AWS SDK o una CLI
<a name="auto-scaling_example_auto-scaling_SetDesiredCapacity_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `SetDesiredCapacity`.

Gli esempi di operazioni sono estratti di codice da programmi più grandi e devono essere eseguiti nel contesto. È possibile visualizzare questa operazione nel contesto nel seguente esempio di codice: 
+  [Informazioni di base](auto-scaling_example_auto-scaling_Scenario_GroupsAndInstances_section.md) 

------
#### [ .NET ]

**SDK per .NET (v4)**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv4/AutoScaling#code-examples). 

```
    /// <summary>
    /// Set the desired capacity of an Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name of the Auto Scaling group.</param>
    /// <param name="desiredCapacity">The desired capacity for the Auto
    /// Scaling group.</param>
    /// <returns>A Boolean value indicating the success of the action.</returns>
    public async Task<bool> SetDesiredCapacityAsync(
        string groupName,
        int desiredCapacity)
    {
        var capacityRequest = new SetDesiredCapacityRequest
        {
            AutoScalingGroupName = groupName,
            DesiredCapacity = desiredCapacity,
        };

        var response = await _amazonAutoScaling.SetDesiredCapacityAsync(capacityRequest);
        Console.WriteLine($"You have set the DesiredCapacity to {desiredCapacity}.");

        return response.HttpStatusCode == System.Net.HttpStatusCode.OK;
    }
```
+  Per i dettagli sull'API, [SetDesiredCapacity](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/SetDesiredCapacity)consulta *AWS SDK per .NET API Reference*. 

------
#### [ C\$1\$1 ]

**SDK per C\$1\$1**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/autoscaling#code-examples). 

```
        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

    Aws::AutoScaling::AutoScalingClient autoScalingClient(clientConfig);

        Aws::AutoScaling::Model::SetDesiredCapacityRequest request;
        request.SetAutoScalingGroupName(groupName);
        request.SetDesiredCapacity(2);

        Aws::AutoScaling::Model::SetDesiredCapacityOutcome outcome =
                autoScalingClient.SetDesiredCapacity(request);

        if (!outcome.IsSuccess()) {
            std::cerr << "Error with AutoScaling::SetDesiredCapacityRequest. "
                      << outcome.GetError().GetMessage()
                      << std::endl;

        }
```
+  Per i dettagli sull'API, [SetDesiredCapacity](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/SetDesiredCapacity)consulta *AWS SDK per C\$1\$1 API Reference*. 

------
#### [ CLI ]

**AWS CLI**  
**Come impostare la capacità desiderata per un gruppo Auto Scaling**  
Questo esempio imposta la capacità desiderata per il gruppo Auto Scaling specificato.  

```
aws autoscaling set-desired-capacity \
    --auto-scaling-group-name my-asg \
    --desired-capacity 2 \
    --honor-cooldown
```
In caso di esito positivo, il comando torna al prompt.  
+  Per i dettagli sull'API, consulta [SetDesiredCapacity AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/set-desired-capacity.html)*Command Reference*. 

------
#### [ Java ]

**SDK per Java 2.x**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/autoscale#code-examples). 

```
    public static void setDesiredCapacity(AutoScalingClient autoScalingClient, String groupName) {
        try {
            SetDesiredCapacityRequest capacityRequest = SetDesiredCapacityRequest.builder()
                    .autoScalingGroupName(groupName)
                    .desiredCapacity(2)
                    .build();

            autoScalingClient.setDesiredCapacity(capacityRequest);
            System.out.println("You have set the DesiredCapacity to 2");

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
```
+  Per i dettagli sull'API, [SetDesiredCapacity](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/SetDesiredCapacity)consulta *AWS SDK for Java 2.x API Reference*. 

------
#### [ Kotlin ]

**SDK per Kotlin**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/autoscale#code-examples). 

```
suspend fun setDesiredCapacity(groupName: String) {
    val capacityRequest =
        SetDesiredCapacityRequest {
            autoScalingGroupName = groupName
            desiredCapacity = 2
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        autoScalingClient.setDesiredCapacity(capacityRequest)
        println("You set the DesiredCapacity to 2")
    }
}
```
+  Per i dettagli sull'API, [SetDesiredCapacity](https://sdk.amazonaws.com/kotlin/api/latest/index.html)consulta *AWS SDK for Kotlin* API reference. 

------
#### [ PHP ]

**SDK per PHP**  
 C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code/auto-scaling#code-examples). 

```
    public function setDesiredCapacity($autoScalingGroupName, $desiredCapacity)
    {
        return $this->autoScalingClient->setDesiredCapacity([
            'AutoScalingGroupName' => $autoScalingGroupName,
            'DesiredCapacity' => $desiredCapacity,
        ]);
    }
```
+  Per i dettagli sull'API, [SetDesiredCapacity](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/SetDesiredCapacity)consulta *AWS SDK per PHP API Reference*. 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio imposta le dimensioni del gruppo Auto Scaling specificato.**  

```
Set-ASDesiredCapacity -AutoScalingGroupName my-asg -DesiredCapacity 2
```
**Esempio 2: questo esempio imposta la dimensione del gruppo Auto Scaling specificato e attende il raggiungimento del tempo di raffreddamento prima di passare alla nuova dimensione.**  

```
Set-ASDesiredCapacity -AutoScalingGroupName my-asg -DesiredCapacity 2 -HonorCooldown $true
```
+  Per i dettagli sull'API, vedere [SetDesiredCapacity](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio imposta le dimensioni del gruppo Auto Scaling specificato.**  

```
Set-ASDesiredCapacity -AutoScalingGroupName my-asg -DesiredCapacity 2
```
**Esempio 2: questo esempio imposta la dimensione del gruppo Auto Scaling specificato e attende il raggiungimento del tempo di raffreddamento prima di passare alla nuova dimensione.**  

```
Set-ASDesiredCapacity -AutoScalingGroupName my-asg -DesiredCapacity 2 -HonorCooldown $true
```
+  Per i dettagli sull'API, vedere [SetDesiredCapacity](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------
#### [ Python ]

**SDK per Python (Boto3)**  
 C'è altro su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/auto-scaling#code-examples). 

```
class AutoScalingWrapper:
    """Encapsulates Amazon EC2 Auto Scaling actions."""

    def __init__(self, autoscaling_client):
        """
        :param autoscaling_client: A Boto3 Amazon EC2 Auto Scaling client.
        """
        self.autoscaling_client = autoscaling_client


    def set_desired_capacity(self, group_name: str, capacity: int) -> None:
        """
        Sets the desired capacity of the group. Amazon EC2 Auto Scaling tries to keep the
        number of running instances equal to the desired capacity.

        :param group_name: The name of the group to update.
        :param capacity: The desired number of running instances.
        :return: None
        :raises ClientError: If there is an error setting the desired capacity.
        """
        try:
            self.autoscaling_client.set_desired_capacity(
                AutoScalingGroupName=group_name,
                DesiredCapacity=capacity,
                HonorCooldown=False,
            )
            logger.info(
                f"Successfully set desired capacity of {capacity} for Auto Scaling group '{group_name}'."
            )

        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            logger.error(
                f"Failed to set desired capacity for Auto Scaling group '{group_name}'."
            )
            if error_code == "ScalingActivityInProgress":
                logger.error(
                    f"A scaling activity is currently in progress for the Auto Scaling group '{group_name}'. "
                    "Please wait for the activity to complete before attempting to set the desired capacity."
                )
            logger.error(f"Full error:\n\t{err}")
            raise
```
+  Per i dettagli sull'API, consulta [SetDesiredCapacity AWS](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/SetDesiredCapacity)*SDK for Python (Boto3) API Reference*. 

------
#### [ Rust ]

**SDK per Rust**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/rustv1/examples/auto-scaling#code-examples). 

```
    pub async fn scale_desired_capacity(&self, capacity: i32) -> Result<(), ScenarioError> {
        // 7. SetDesiredCapacity: set desired capacity to 2.
        //   Wait for a second instance to launch.
        let update_group = self
            .autoscaling
            .set_desired_capacity()
            .auto_scaling_group_name(self.auto_scaling_group_name.clone())
            .desired_capacity(capacity)
            .send()
            .await;
        if let Err(err) = update_group {
            return Err(ScenarioError::new(
                format!("Failed to update group to desired capacity ({capacity}))").as_str(),
                &err,
            ));
        }
        Ok(())
    }
```
+  Per i dettagli sulle API, consulta il *riferimento [SetDesiredCapacity](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.set_desired_capacity)all'API AWS SDK for Rust*. 

------
#### [ SAP ABAP ]

**SDK per SAP ABAP**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/sap-abap/services/asc#code-examples). 

```
    " Example: iv_group_name = 'my-auto-scaling-group'
    " Example: iv_capacity = 2
    
    TRY.
        ao_asc->setdesiredcapacity(
          iv_autoscalinggroupname = iv_group_name
          iv_desiredcapacity = iv_capacity
          iv_honorcooldown = abap_false ).

        MESSAGE 'Desired capacity set successfully' TYPE 'I'.

      CATCH /aws1/cx_ascscaactivityinprg00 INTO DATA(lo_activity_in_progress).
        RAISE EXCEPTION lo_activity_in_progress.
      CATCH /aws1/cx_rt_generic INTO DATA(lo_generic_exception).
        RAISE EXCEPTION lo_generic_exception.
    ENDTRY.
```
+  Per i dettagli sulle API, [SetDesiredCapacity](https://docs.aws.amazon.com/sdk-for-sap-abap/v1/api/latest/index.html)consulta *AWS SDK for SAP ABAP* API reference. 

------

# Utilizzare `SetInstanceHealth` con una CLI
<a name="auto-scaling_example_auto-scaling_SetInstanceHealth_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `SetInstanceHealth`.

------
#### [ CLI ]

**AWS CLI**  
**Come impostare lo stato dell’integrità di un’istanza**  
In questo esempio, lo stato di integrità dell’istanza specificata viene impostato su `Unhealthy`.  

```
aws autoscaling set-instance-health \
    --instance-id i-061c63c5eb45f0416 \
    --health-status Unhealthy
```
Questo comando non produce alcun output.  
+  Per i dettagli sull'API, consulta [SetInstanceHealth AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/set-instance-health.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio imposta lo stato dell’istanza specificata su “Unhealthy” (Non integro), eliminandola dal servizio. Auto Scaling termina e sostituisce l’istanza.**  

```
Set-ASInstanceHealth -HealthStatus Unhealthy -InstanceId i-93633f9b
```
**Esempio 2: questo esempio imposta lo stato dell’istanza specificata su “Unhealthy” (Non integro), mantenendola nel servizio. L’eventuale periodo di tolleranza definito per il controllo dell’integrità per il gruppo Auto Scaling non viene rispettato.**  

```
Set-ASInstanceHealth -HealthStatus Healthy -InstanceId i-93633f9b -ShouldRespectGracePeriod $false
```
+  Per i dettagli sull'API, vedere [SetInstanceHealth](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio imposta lo stato dell’istanza specificata su “Unhealthy” (Non integro), eliminandola dal servizio. Auto Scaling termina e sostituisce l’istanza.**  

```
Set-ASInstanceHealth -HealthStatus Unhealthy -InstanceId i-93633f9b
```
**Esempio 2: questo esempio imposta lo stato dell’istanza specificata su “Unhealthy” (Non integro), mantenendola nel servizio. L’eventuale periodo di tolleranza definito per il controllo dell’integrità per il gruppo Auto Scaling non viene rispettato.**  

```
Set-ASInstanceHealth -HealthStatus Healthy -InstanceId i-93633f9b -ShouldRespectGracePeriod $false
```
+  Per i dettagli sull'API, vedere [SetInstanceHealth](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `SetInstanceProtection` con una CLI
<a name="auto-scaling_example_auto-scaling_SetInstanceProtection_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `SetInstanceProtection`.

------
#### [ CLI ]

**AWS CLI**  
**Esempio 1: come abilitare l’impostazione di protezione delle istanze per un’istanza.**  
Questo esempio abilita la protezione dell’istanza specificata.  

```
aws autoscaling set-instance-protection \
    --instance-ids i-061c63c5eb45f0416 \
    --auto-scaling-group-name my-asg --protected-from-scale-in
```
Questo comando non produce alcun output.  
**Esempio 2: come disabilitare l’impostazione di protezione delle istanze per un’istanza**  
Questo esempio disabilita la protezione dell’istanza specificata.  

```
aws autoscaling set-instance-protection \
    --instance-ids i-061c63c5eb45f0416 \
    --auto-scaling-group-name my-asg \
    --no-protected-from-scale-in
```
Questo comando non produce alcun output.  
+  Per i dettagli sull'API, consulta [SetInstanceProtection AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/set-instance-protection.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio abilita la protezione dell’istanza specificata.**  

```
Set-ASInstanceProtection -AutoScalingGroupName my-asg -InstanceId i-12345678 -ProtectedFromScaleIn $true
```
**Esempio 2: questo esempio disabilita la protezione dell’istanza specificata.**  

```
Set-ASInstanceProtection -AutoScalingGroupName my-asg -InstanceId i-12345678 -ProtectedFromScaleIn $false
```
+  Per i dettagli sull'API, vedere [SetInstanceProtection](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio abilita la protezione dell’istanza specificata.**  

```
Set-ASInstanceProtection -AutoScalingGroupName my-asg -InstanceId i-12345678 -ProtectedFromScaleIn $true
```
**Esempio 2: questo esempio disabilita la protezione dell’istanza specificata.**  

```
Set-ASInstanceProtection -AutoScalingGroupName my-asg -InstanceId i-12345678 -ProtectedFromScaleIn $false
```
+  Per i dettagli sull'API, vedere [SetInstanceProtection](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzare `SuspendProcesses` con una CLI
<a name="auto-scaling_example_auto-scaling_SuspendProcesses_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `SuspendProcesses`.

------
#### [ CLI ]

**AWS CLI**  
**Come sospendere i processi di dimensionamento automatico**  
Questo esempio sospende il processo di dimensionamento specificato per il gruppo Auto Scaling specificato.  

```
aws autoscaling suspend-processes \
    --auto-scaling-group-name my-asg \
    --scaling-processes AlarmNotification
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Sospensione e ripresa dei processi di dimensionamento](https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-suspend-resume-processes.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
+  Per i dettagli sull'API, consulta [SuspendProcesses AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/suspend-processes.html)*Command Reference.* 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio sospende il processo di dimensionamento automatico specificato per il gruppo Auto Scaling specificato.**  

```
Suspend-ASProcess -AutoScalingGroupName my-asg -ScalingProcess "AlarmNotification"
```
**Esempio 2: questo esempio riprende tutti i processi di dimensionamento automatico specificati per il gruppo Auto Scaling specificato.**  

```
Suspend-ASProcess -AutoScalingGroupName my-asg
```
+  Per i dettagli sull'API, vedere [SuspendProcesses](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio sospende il processo di dimensionamento automatico specificato per il gruppo Auto Scaling specificato.**  

```
Suspend-ASProcess -AutoScalingGroupName my-asg -ScalingProcess "AlarmNotification"
```
**Esempio 2: questo esempio riprende tutti i processi di dimensionamento automatico specificati per il gruppo Auto Scaling specificato.**  

```
Suspend-ASProcess -AutoScalingGroupName my-asg
```
+  Per i dettagli sull'API, vedere [SuspendProcesses](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------

# Utilizzo `TerminateInstanceInAutoScalingGroup` con un AWS SDK o una CLI
<a name="auto-scaling_example_auto-scaling_TerminateInstanceInAutoScalingGroup_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `TerminateInstanceInAutoScalingGroup`.

Gli esempi di operazioni sono estratti di codice da programmi più grandi e devono essere eseguiti nel contesto. È possibile visualizzare questa operazione nel contesto nei seguenti esempi di codice: 
+  [Informazioni di base](auto-scaling_example_auto-scaling_Scenario_GroupsAndInstances_section.md) 
+  [Creazione e gestione di un servizio resiliente](auto-scaling_example_cross_ResilientService_section.md) 

------
#### [ .NET ]

**SDK per .NET (v4)**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv4/AutoScaling#code-examples). 

```
    /// <summary>
    /// Terminate all instances in the Auto Scaling group in preparation for
    /// deleting the group.
    /// </summary>
    /// <param name="instanceId">The instance Id of the instance to terminate.</param>
    /// <returns>A Boolean value that indicates the success or failure of
    /// the operation.</returns>
    public async Task<bool> TerminateInstanceInAutoScalingGroupAsync(
        string instanceId)
    {
        var request = new TerminateInstanceInAutoScalingGroupRequest
        {
            InstanceId = instanceId,
            ShouldDecrementDesiredCapacity = false,
        };

        var response = await _amazonAutoScaling.TerminateInstanceInAutoScalingGroupAsync(request);

        if (response.HttpStatusCode == System.Net.HttpStatusCode.OK)
        {
            Console.WriteLine($"You have terminated the instance: {instanceId}");
            return true;
        }

        Console.WriteLine($"Could not terminate {instanceId}");
        return false;
    }
```
+  Per i dettagli sull'API, [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/TerminateInstanceInAutoScalingGroup)consulta *AWS SDK per .NET API Reference*. 

------
#### [ C\$1\$1 ]

**SDK per C\$1\$1**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/autoscaling#code-examples). 

```
        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

    Aws::AutoScaling::AutoScalingClient autoScalingClient(clientConfig);

        Aws::AutoScaling::Model::TerminateInstanceInAutoScalingGroupRequest request;
        request.SetInstanceId(instanceIDs[instanceNumber - 1]);
        request.SetShouldDecrementDesiredCapacity(false);

        Aws::AutoScaling::Model::TerminateInstanceInAutoScalingGroupOutcome outcome =
                autoScalingClient.TerminateInstanceInAutoScalingGroup(request);

        if (outcome.IsSuccess()) {
            std::cout << "Waiting for EC2 instance with ID '"
                      << instanceIDs[instanceNumber - 1] << "' to terminate..."
                      << std::endl;
        }
        else {
            std::cerr << "Error with AutoScaling::TerminateInstanceInAutoScalingGroup. "
                      << outcome.GetError().GetMessage()
                      << std::endl;

        }
```
+  Per i dettagli sull'API, [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/TerminateInstanceInAutoScalingGroup)consulta *AWS SDK per C\$1\$1 API Reference*. 

------
#### [ CLI ]

**AWS CLI**  
**Come terminare un’istanza in un gruppo Auto Scaling**  
Questo esempio termina l’istanza specificata nel gruppo Auto Scaling specificato senza aggiornare la dimensione del gruppo. In questo caso, Amazon EC2 Auto Scaling avvia un’istanza di sostituzione dopo aver terminato l’istanza specificata.  

```
aws autoscaling terminate-instance-in-auto-scaling-group \
    --instance-id i-061c63c5eb45f0416 \
    --no-should-decrement-desired-capacity
```
Output:  

```
{
    "Activities": [
        {
            "ActivityId": "8c35d601-793c-400c-fcd0-f64a27530df7",
            "AutoScalingGroupName": "my-asg",
            "Description": "Terminating EC2 instance: i-061c63c5eb45f0416",
            "Cause": "",
            "StartTime": "2020-10-31T20:34:25.680Z",
            "StatusCode": "InProgress",
            "Progress": 0,
            "Details": "{\"Subnet ID\":\"subnet-6194ea3b\",\"Availability Zone\":\"us-west-2c\"}"
        }
    ]
}
```
+  Per i dettagli sull'API, consulta [TerminateInstanceInAutoScalingGroup AWS CLI](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/terminate-instance-in-auto-scaling-group.html)*Command Reference*. 

------
#### [ Java ]

**SDK per Java 2.x**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/autoscale#code-examples). 

```
    public static void terminateInstanceInAutoScalingGroup(AutoScalingClient autoScalingClient, String instanceId) {
        try {
            TerminateInstanceInAutoScalingGroupRequest request = TerminateInstanceInAutoScalingGroupRequest.builder()
                    .instanceId(instanceId)
                    .shouldDecrementDesiredCapacity(false)
                    .build();

            autoScalingClient.terminateInstanceInAutoScalingGroup(request);
            System.out.println("You have terminated instance " + instanceId);

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
```
+  Per i dettagli sull'API, [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/TerminateInstanceInAutoScalingGroup)consulta *AWS SDK for Java 2.x API Reference*. 

------
#### [ Kotlin ]

**SDK per Kotlin**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/autoscale#code-examples). 

```
suspend fun terminateInstanceInAutoScalingGroup(instanceIdVal: String) {
    val request =
        TerminateInstanceInAutoScalingGroupRequest {
            instanceId = instanceIdVal
            shouldDecrementDesiredCapacity = false
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        autoScalingClient.terminateInstanceInAutoScalingGroup(request)
        println("You have terminated instance $instanceIdVal")
    }
}
```
+  Per i dettagli sull'API, [TerminateInstanceInAutoScalingGroup](https://sdk.amazonaws.com/kotlin/api/latest/index.html)consulta *AWS SDK for Kotlin* API reference. 

------
#### [ PHP ]

**SDK per PHP**  
 C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code/auto-scaling#code-examples). 

```
    public function terminateInstanceInAutoScalingGroup(
        $instanceId,
        $shouldDecrementDesiredCapacity = true,
        $attempts = 0
    ) {
        try {
            return $this->autoScalingClient->terminateInstanceInAutoScalingGroup([
                'InstanceId' => $instanceId,
                'ShouldDecrementDesiredCapacity' => $shouldDecrementDesiredCapacity,
            ]);
        } catch (AutoScalingException $exception) {
            if ($exception->getAwsErrorCode() == "ScalingActivityInProgress" && $attempts < 5) {
                error_log("Cannot terminate an instance while it is still pending. Waiting then trying again.");
                sleep(5 * (1 + $attempts));
                return $this->terminateInstanceInAutoScalingGroup(
                    $instanceId,
                    $shouldDecrementDesiredCapacity,
                    ++$attempts
                );
            } else {
                throw $exception;
            }
        }
    }
```
+  Per i dettagli sull'API, [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/TerminateInstanceInAutoScalingGroup)consulta *AWS SDK per PHP API Reference*. 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio termina l’istanza specificata e diminuisce la capacità desiderata del relativo gruppo Auto Scaling in modo che Auto Scaling non avvii un’istanza di sostituzione.**  

```
Stop-ASInstanceInAutoScalingGroup -InstanceId i-93633f9b -ShouldDecrementDesiredCapacity $true
```
**Output:**  

```
ActivityId           : 2e40d9bd-1902-444c-abf3-6ea0002efdc5
AutoScalingGroupName :
Cause                : At 2015-11-22T16:09:03Z instance i-93633f9b was taken out of service in response to a user 
                       request, shrinking the capacity from 2 to 1.
Description          : Terminating EC2 instance: i-93633f9b
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 
Progress             : 0
StartTime            : 11/22/2015 8:09:03 AM
StatusCode           : InProgress
StatusMessage        :
```
**Esempio 2: questo esempio termina l’istanza specificata senza diminuire la capacità desiderata del relativo gruppo Auto Scaling. Auto Scaling avvia un’istanza di sostituzione.**  

```
Stop-ASInstanceInAutoScalingGroup -InstanceId i-93633f9b -ShouldDecrementDesiredCapacity $false
```
**Output:**  

```
ActivityId           : 2e40d9bd-1902-444c-abf3-6ea0002efdc5
AutoScalingGroupName :
Cause                : At 2015-11-22T16:09:03Z instance i-93633f9b was taken out of service in response to a user 
                       request.
Description          : Terminating EC2 instance: i-93633f9b
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 
Progress             : 0
StartTime            : 11/22/2015 8:09:03 AM
StatusCode           : InProgress
StatusMessage        :
```
+  Per i dettagli sull'API, vedere [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio termina l’istanza specificata e diminuisce la capacità desiderata del relativo gruppo Auto Scaling in modo che Auto Scaling non avvii un’istanza di sostituzione.**  

```
Stop-ASInstanceInAutoScalingGroup -InstanceId i-93633f9b -ShouldDecrementDesiredCapacity $true
```
**Output:**  

```
ActivityId           : 2e40d9bd-1902-444c-abf3-6ea0002efdc5
AutoScalingGroupName :
Cause                : At 2015-11-22T16:09:03Z instance i-93633f9b was taken out of service in response to a user 
                       request, shrinking the capacity from 2 to 1.
Description          : Terminating EC2 instance: i-93633f9b
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 
Progress             : 0
StartTime            : 11/22/2015 8:09:03 AM
StatusCode           : InProgress
StatusMessage        :
```
**Esempio 2: questo esempio termina l’istanza specificata senza diminuire la capacità desiderata del relativo gruppo Auto Scaling. Auto Scaling avvia un’istanza di sostituzione.**  

```
Stop-ASInstanceInAutoScalingGroup -InstanceId i-93633f9b -ShouldDecrementDesiredCapacity $false
```
**Output:**  

```
ActivityId           : 2e40d9bd-1902-444c-abf3-6ea0002efdc5
AutoScalingGroupName :
Cause                : At 2015-11-22T16:09:03Z instance i-93633f9b was taken out of service in response to a user 
                       request.
Description          : Terminating EC2 instance: i-93633f9b
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 
Progress             : 0
StartTime            : 11/22/2015 8:09:03 AM
StatusCode           : InProgress
StatusMessage        :
```
+  Per i dettagli sull'API, vedere [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------
#### [ Python ]

**SDK per Python (Boto3)**  
 C'è altro su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/auto-scaling#code-examples). 

```
class AutoScalingWrapper:
    """Encapsulates Amazon EC2 Auto Scaling actions."""

    def __init__(self, autoscaling_client):
        """
        :param autoscaling_client: A Boto3 Amazon EC2 Auto Scaling client.
        """
        self.autoscaling_client = autoscaling_client


    def terminate_instance(
        self, instance_id: str, decrease_capacity: bool
    ) -> Dict[str, Any]:
        """
        Stops an instance.

        :param instance_id: The ID of the instance to stop.
        :param decrease_capacity: Specifies whether to decrease the desired capacity
                                  of the group. When passing True for this parameter,
                                  you can stop an instance without having a replacement
                                  instance start when the desired capacity threshold is
                                  crossed.
        :return: A dictionary containing details of the scaling activity that occurs
                 in response to this action.
        :raises ClientError: If there is an error terminating the instance.
        """
        try:
            response = self.autoscaling_client.terminate_instance_in_auto_scaling_group(
                InstanceId=instance_id, ShouldDecrementDesiredCapacity=decrease_capacity
            )
            logger.info(f"Successfully terminated instance {instance_id}.")
            return response["Activity"]

        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            logger.error(f"Failed to terminate instance {instance_id}.")
            if error_code == "ScalingActivityInProgress":
                logger.error(
                    "A scaling activity is currently in progress for the Auto Scaling group "
                    f"associated with instance '{instance_id}'. "
                    "Please wait for the activity to complete before attempting to terminate the instance."
                )
            elif error_code == "ResourceInUse":
                logger.error(
                    f"The instance '{instance_id}' or an associated resource is currently in use "
                    "and cannot be terminated. "
                    "Ensure the instance is not involved in any ongoing processes and try again."
                )
            logger.error(f"Full error:\n\t{err}")
            raise
```
+  Per i dettagli sull'API, consulta [TerminateInstanceInAutoScalingGroup AWS](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/TerminateInstanceInAutoScalingGroup)*SDK for Python (Boto3) API Reference*. 

------
#### [ Rust ]

**SDK per Rust**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/rustv1/examples/auto-scaling#code-examples). 

```
    pub async fn terminate_some_instance(&self) -> Result<(), ScenarioError> {
        // Retrieve a list of instances in the auto scaling group.
        let auto_scaling_group = self.get_group().await?;
        let instances = auto_scaling_group.instances();
        // Or use other logic to find an instance to terminate.
        let instance = instances.first();
        if let Some(instance) = instance {
            let instance_id = if let Some(instance_id) = instance.instance_id() {
                instance_id
            } else {
                return Err(ScenarioError::with("Missing instance id"));
            };
            let termination = self
                .ec2
                .terminate_instances()
                .instance_ids(instance_id)
                .send()
                .await;
            if let Err(err) = termination {
                Err(ScenarioError::new(
                    "There was a problem terminating an instance",
                    &err,
                ))
            } else {
                Ok(())
            }
        } else {
            Err(ScenarioError::with("There was no instance to terminate"))
        }
    }

    async fn get_group(&self) -> Result<AutoScalingGroup, ScenarioError> {
        let describe_auto_scaling_groups = self
            .autoscaling
            .describe_auto_scaling_groups()
            .auto_scaling_group_names(self.auto_scaling_group_name.clone())
            .send()
            .await;

        if let Err(err) = describe_auto_scaling_groups {
            return Err(ScenarioError::new(
                format!(
                    "Failed to get status of autoscaling group {}",
                    self.auto_scaling_group_name.clone()
                )
                .as_str(),
                &err,
            ));
        }

        let describe_auto_scaling_groups_output = describe_auto_scaling_groups.unwrap();
        let auto_scaling_groups = describe_auto_scaling_groups_output.auto_scaling_groups();
        let auto_scaling_group = auto_scaling_groups.first();

        if auto_scaling_group.is_none() {
            return Err(ScenarioError::with(format!(
                "Could not find autoscaling group {}",
                self.auto_scaling_group_name.clone()
            )));
        }

        Ok(auto_scaling_group.unwrap().clone())
    }
```
+  Per i dettagli sulle API, consulta il *riferimento [TerminateInstanceInAutoScalingGroup](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.terminate_instance_in_auto_scaling_group)all'API AWS SDK for Rust*. 

------
#### [ SAP ABAP ]

**SDK per SAP ABAP**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/sap-abap/services/asc#code-examples). 

```
    " Example: iv_instance_id = 'i-1234567890abcdef0'
    " Example: iv_decrease_capacity = abap_true
    
    TRY.
        DATA(lo_output) = ao_asc->terminateinstinautoscgroup(
          iv_instanceid = iv_instance_id
          iv_shoulddecrementdesiredcap = iv_decrease_capacity ).

        oo_output = lo_output->get_activity( ).

        MESSAGE 'Instance terminated successfully' TYPE 'I'.

      CATCH /aws1/cx_ascscaactivityinprg00 INTO DATA(lo_activity_in_progress).
        RAISE EXCEPTION lo_activity_in_progress.
      CATCH /aws1/cx_ascresrccontionfault INTO DATA(lo_contention).
        RAISE EXCEPTION lo_contention.
      CATCH /aws1/cx_rt_generic INTO DATA(lo_generic_exception).
        RAISE EXCEPTION lo_generic_exception.
    ENDTRY.
```
+  Per i dettagli sulle API, [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/sdk-for-sap-abap/v1/api/latest/index.html)consulta *AWS SDK for SAP ABAP* API reference. 

------

# Utilizzo `UpdateAutoScalingGroup` con un AWS SDK o una CLI
<a name="auto-scaling_example_auto-scaling_UpdateAutoScalingGroup_section"></a>

Gli esempi di codice seguenti mostrano come utilizzare `UpdateAutoScalingGroup`.

Gli esempi di operazioni sono estratti di codice da programmi più grandi e devono essere eseguiti nel contesto. È possibile visualizzare questa operazione nel contesto nei seguenti esempi di codice: 
+  [Informazioni di base](auto-scaling_example_auto-scaling_Scenario_GroupsAndInstances_section.md) 
+  [Creazione e gestione di un servizio resiliente](auto-scaling_example_cross_ResilientService_section.md) 

------
#### [ .NET ]

**SDK per .NET (v4)**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv4/AutoScaling#code-examples). 

```
    /// <summary>
    /// Update the capacity of an Auto Scaling group.
    /// </summary>
    /// <param name="groupName">The name of the Auto Scaling group.</param>
    /// <param name="launchTemplateName">The name of the EC2 launch template.</param>
    /// <param name="maxSize">The maximum number of instances that can be
    /// created for the Auto Scaling group.</param>
    /// <returns>A Boolean value indicating the success of the action.</returns>
    public async Task<bool> UpdateAutoScalingGroupAsync(
        string groupName,
        string launchTemplateName,
        int maxSize)
    {
        var templateSpecification = new LaunchTemplateSpecification
        {
            LaunchTemplateName = launchTemplateName,
        };

        var groupRequest = new UpdateAutoScalingGroupRequest
        {
            MaxSize = maxSize,
            AutoScalingGroupName = groupName,
            LaunchTemplate = templateSpecification,
        };

        var response = await _amazonAutoScaling.UpdateAutoScalingGroupAsync(groupRequest);
        if (response.HttpStatusCode == System.Net.HttpStatusCode.OK)
        {
            Console.WriteLine($"You successfully updated the Auto Scaling group {groupName}.");
            return true;
        }
        else
        {
            return false;
        }
    }
```
+  Per i dettagli sull'API, [UpdateAutoScalingGroup](https://docs.aws.amazon.com/goto/DotNetSDKV4/autoscaling-2011-01-01/UpdateAutoScalingGroup)consulta *AWS SDK per .NET API Reference*. 

------
#### [ C\$1\$1 ]

**SDK per C\$1\$1**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/autoscaling#code-examples). 

```
        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

    Aws::AutoScaling::AutoScalingClient autoScalingClient(clientConfig);

        Aws::AutoScaling::Model::UpdateAutoScalingGroupRequest request;
        request.SetAutoScalingGroupName(groupName);
        request.SetMaxSize(3);

        Aws::AutoScaling::Model::UpdateAutoScalingGroupOutcome outcome =
                autoScalingClient.UpdateAutoScalingGroup(request);

        if (!outcome.IsSuccess()) {
            std::cerr << "Error with AutoScaling::UpdateAutoScalingGroup. "
                      << outcome.GetError().GetMessage()
                      << std::endl;

        }
```
+  Per i dettagli sull'API, [UpdateAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/UpdateAutoScalingGroup)consulta *AWS SDK per C\$1\$1 API Reference*. 

------
#### [ CLI ]

**AWS CLI**  
**Esempio 1: come aggiornare i limiti di dimensione di un gruppo Auto Scaling**  
Questo esempio aggiorna il gruppo Auto Scaling specificato in base a una dimensione minima di 2 e una dimensione massima di 10.  

```
aws autoscaling update-auto-scaling-group \
    --auto-scaling-group-name my-asg \
    --min-size 2 \
    --max-size 10
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Impostazione dei limiti di capacità per il gruppo Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/asg-capacity-limits.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 2: come aggiungere i controlli dell’integrità di Elastic Load Balancing e specificare le zone di disponibilità e le sottoreti da utilizzare**  
Questo esempio aggiorna il gruppo Auto Scaling specificato per aggiungere i controlli dell’integrità di Elastic Load Balancing. Questo comando aggiorna anche il valore di `--vpc-zone-identifier` con un elenco di sottoreti IDs in più zone di disponibilità.  

```
aws autoscaling update-auto-scaling-group \
    --auto-scaling-group-name my-asg \
    --health-check-type ELB \
    --health-check-grace-period 600 \
    --vpc-zone-identifier "subnet-5ea0c127,subnet-6194ea3b,subnet-c934b782"
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Elastic Load Balancing e Amazon EC2 Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-load-balancer.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 3: come aggiornare il gruppo di posizionamento e la policy di terminazione**  
Questo esempio aggiorna il gruppo di posizionamento e la policy di terminazione da utilizzare.  

```
aws autoscaling update-auto-scaling-group \
    --auto-scaling-group-name my-asg \
    --placement-group my-placement-group \
    --termination-policies "OldestInstance"
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Gruppi Auto Scaling](https://docs.aws.amazon.com/autoscaling/ec2/userguide/AutoScalingGroup.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 4: come utilizzare la versione più recente del modello di avvio**  
Questo esempio aggiorna il gruppo Auto Scaling specificato per utilizzare la versione più recente del modello di avvio specificato.  

```
aws autoscaling update-auto-scaling-group \
    --auto-scaling-group-name my-asg \
    --launch-template LaunchTemplateId=lt-1234567890abcde12,Version='$Latest'
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Modelli di avvio](https://docs.aws.amazon.com/autoscaling/ec2/userguide/LaunchTemplates.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 5: come utilizzare una versione specifica del modello di avvio**  
Questo esempio aggiorna il gruppo Auto Scaling specificato per utilizzare una versione specifica di un modello di avvio anziché la versione più recente o predefinita.  

```
aws autoscaling update-auto-scaling-group \
    --auto-scaling-group-name my-asg \
    --launch-template LaunchTemplateName=my-template-for-auto-scaling,Version='2'
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Modelli di avvio](https://docs.aws.amazon.com/autoscaling/ec2/userguide/LaunchTemplates.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling*.  
**Esempio 6: come definire una policy di istanze miste e abilitare il ribilanciamento della capacità**  
Questo esempio aggiorna il gruppo Auto Scaling specificato per utilizzare una policy di istanze miste e consentire il ribilanciamento della capacità. Questa struttura consente di specificare gruppi con capacità spot e on demand e utilizzare modelli di avvio diversi per architetture diverse.  

```
aws autoscaling update-auto-scaling-group \
    --cli-input-json file://~/config.json
```
Contenuto di `config.json`:  

```
{
    "AutoScalingGroupName": "my-asg",
    "CapacityRebalance": true,
    "MixedInstancesPolicy": {
        "LaunchTemplate": {
            "LaunchTemplateSpecification": {
                "LaunchTemplateName": "my-launch-template-for-x86",
                "Version": "$Latest"
            },
            "Overrides": [
                {
                    "InstanceType": "c6g.large",
                    "LaunchTemplateSpecification": {
                        "LaunchTemplateName": "my-launch-template-for-arm",
                        "Version": "$Latest"
                    }
                },
                {
                    "InstanceType": "c5.large"
                },
                {
                    "InstanceType": "c5a.large"
                }
            ]
        },
        "InstancesDistribution": {
            "OnDemandPercentageAboveBaseCapacity": 50,
            "SpotAllocationStrategy": "capacity-optimized"
        }
    }
}
```
Questo comando non produce alcun output.  
Per ulteriori informazioni, consulta [Gruppi Auto Scaling con più tipi di istanze e opzioni di acquisto](https://docs.aws.amazon.com/autoscaling/ec2/userguide/asg-purchase-options.html) nella *Guida per l’utente di Amazon EC2 Auto Scaling.*  
+  Per i dettagli sull'API, vedere [UpdateAutoScalingGroup](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/autoscaling/update-auto-scaling-group.html)in *AWS CLI Command Reference.* 

------
#### [ Java ]

**SDK per Java 2.x**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/autoscale#code-examples). 

```
    public static void updateAutoScalingGroup(AutoScalingClient autoScalingClient, String groupName,
            String launchTemplateName) {
        try {
            AutoScalingWaiter waiter = autoScalingClient.waiter();
            LaunchTemplateSpecification templateSpecification = LaunchTemplateSpecification.builder()
                    .launchTemplateName(launchTemplateName)
                    .build();

            UpdateAutoScalingGroupRequest groupRequest = UpdateAutoScalingGroupRequest.builder()
                    .maxSize(3)
                    .autoScalingGroupName(groupName)
                    .launchTemplate(templateSpecification)
                    .build();

            autoScalingClient.updateAutoScalingGroup(groupRequest);
            DescribeAutoScalingGroupsRequest groupsRequest = DescribeAutoScalingGroupsRequest.builder()
                    .autoScalingGroupNames(groupName)
                    .build();

            WaiterResponse<DescribeAutoScalingGroupsResponse> waiterResponse = waiter
                    .waitUntilGroupInService(groupsRequest);
            waiterResponse.matched().response().ifPresent(System.out::println);
            System.out.println("You successfully updated the auto scaling group  " + groupName);

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
```
+  Per i dettagli sull'API, [UpdateAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/UpdateAutoScalingGroup)consulta *AWS SDK for Java 2.x API Reference*. 

------
#### [ Kotlin ]

**SDK per Kotlin**  
 C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/autoscale#code-examples). 

```
suspend fun updateAutoScalingGroup(
    groupName: String,
    launchTemplateNameVal: String,
    serviceLinkedRoleARNVal: String,
) {
    val templateSpecification =
        LaunchTemplateSpecification {
            launchTemplateName = launchTemplateNameVal
        }

    val groupRequest =
        UpdateAutoScalingGroupRequest {
            maxSize = 3
            serviceLinkedRoleArn = serviceLinkedRoleARNVal
            autoScalingGroupName = groupName
            launchTemplate = templateSpecification
        }

    val groupsRequestWaiter =
        DescribeAutoScalingGroupsRequest {
            autoScalingGroupNames = listOf(groupName)
        }

    AutoScalingClient { region = "us-east-1" }.use { autoScalingClient ->
        autoScalingClient.updateAutoScalingGroup(groupRequest)
        autoScalingClient.waitUntilGroupExists(groupsRequestWaiter)
        println("You successfully updated the Auto Scaling group  $groupName")
    }
}
```
+  Per i dettagli sull'API, [UpdateAutoScalingGroup](https://sdk.amazonaws.com/kotlin/api/latest/index.html)consulta *AWS SDK for Kotlin* API reference. 

------
#### [ PHP ]

**SDK per PHP**  
 C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code/auto-scaling#code-examples). 

```
    public function updateAutoScalingGroup($autoScalingGroupName, $args)
    {
        if (array_key_exists('MaxSize', $args)) {
            $maxSize = ['MaxSize' => $args['MaxSize']];
        } else {
            $maxSize = [];
        }
        if (array_key_exists('MinSize', $args)) {
            $minSize = ['MinSize' => $args['MinSize']];
        } else {
            $minSize = [];
        }
        $parameters = ['AutoScalingGroupName' => $autoScalingGroupName];
        $parameters = array_merge($parameters, $minSize, $maxSize);
        return $this->autoScalingClient->updateAutoScalingGroup($parameters);
    }
```
+  Per i dettagli sull'API, [UpdateAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForPHPV3/autoscaling-2011-01-01/UpdateAutoScalingGroup)consulta *AWS SDK per PHP API Reference*. 

------
#### [ PowerShell ]

**Strumenti per PowerShell V4**  
**Esempio 1: questo esempio imposta le dimensioni minima e massima del gruppo Auto Scaling specificato.**  

```
Update-ASAutoScalingGroup -AutoScalingGroupName my-asg -MaxSize 5 -MinSize 1
```
**Esempio 2: questo esempio aggiorna il tempo di raffreddamento predefinito del gruppo Auto Scaling specificato.**  

```
Update-ASAutoScalingGroup -AutoScalingGroupName my-asg -DefaultCooldown 10
```
**Esempio 3: questo esempio aggiorna le zone di disponibilità del gruppo Auto Scaling specificato.**  

```
Update-ASAutoScalingGroup -AutoScalingGroupName my-asg -AvailabilityZone @("us-west-2a", "us-west-2b")
```
**Esempio 4: questo esempio aggiorna il gruppo Auto Scaling specificato in modo da utilizzare i controlli dell’integrità di Elastic Load Balancing.**  

```
Update-ASAutoScalingGroup -AutoScalingGroupName my-asg -HealthCheckType ELB -HealthCheckGracePeriod 60
```
+  Per i dettagli sull'API, vedere [UpdateAutoScalingGroup](https://docs.aws.amazon.com/powershell/v4/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V4). 

**Strumenti per V5 PowerShell **  
**Esempio 1: questo esempio imposta le dimensioni minima e massima del gruppo Auto Scaling specificato.**  

```
Update-ASAutoScalingGroup -AutoScalingGroupName my-asg -MaxSize 5 -MinSize 1
```
**Esempio 2: questo esempio aggiorna il tempo di raffreddamento predefinito del gruppo Auto Scaling specificato.**  

```
Update-ASAutoScalingGroup -AutoScalingGroupName my-asg -DefaultCooldown 10
```
**Esempio 3: questo esempio aggiorna le zone di disponibilità del gruppo Auto Scaling specificato.**  

```
Update-ASAutoScalingGroup -AutoScalingGroupName my-asg -AvailabilityZone @("us-west-2a", "us-west-2b")
```
**Esempio 4: questo esempio aggiorna il gruppo Auto Scaling specificato in modo da utilizzare i controlli dell’integrità di Elastic Load Balancing.**  

```
Update-ASAutoScalingGroup -AutoScalingGroupName my-asg -HealthCheckType ELB -HealthCheckGracePeriod 60
```
+  Per i dettagli sull'API, vedere [UpdateAutoScalingGroup](https://docs.aws.amazon.com/powershell/v5/reference)in *AWS Strumenti per PowerShell Cmdlet Reference (*V5). 

------
#### [ Python ]

**SDK per Python (Boto3)**  
 C'è altro su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/auto-scaling#code-examples). 

```
class AutoScalingWrapper:
    """Encapsulates Amazon EC2 Auto Scaling actions."""

    def __init__(self, autoscaling_client):
        """
        :param autoscaling_client: A Boto3 Amazon EC2 Auto Scaling client.
        """
        self.autoscaling_client = autoscaling_client


    def update_group(self, group_name: str, **kwargs: Any) -> None:
        """
        Updates an Auto Scaling group.

        :param group_name: The name of the group to update.
        :param kwargs: Keyword arguments to pass through to the service.
        :return: None
        :raises ClientError: If there is an error updating the Auto Scaling group.
        """
        try:
            self.autoscaling_client.update_auto_scaling_group(
                AutoScalingGroupName=group_name, **kwargs
            )
            logger.info(f"Successfully updated Auto Scaling group {group_name}.")

        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            logger.error(f"Failed to update Auto Scaling group {group_name}.")
            if error_code == "ResourceInUse":
                logger.error(
                    "The Auto Scaling group '%s' is currently in use and cannot be modified. Please try again later.",
                    group_name,
                )
            elif error_code == "ScalingActivityInProgress":
                logger.error(
                    f"A scaling activity is currently in progress for the Auto Scaling group '{group_name}'."
                    "Please wait for the activity to complete before attempting to update the group."
                )
            logger.error(f"Full error:\n\t{err}")
            raise
```
+  Per i dettagli sull'API, consulta [UpdateAutoScalingGroup AWS](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/UpdateAutoScalingGroup)*SDK for Python (Boto3) API Reference*. 

------
#### [ Rust ]

**SDK per Rust**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/rustv1/examples/auto-scaling#code-examples). 

```
async fn update_group(client: &Client, name: &str, size: i32) -> Result<(), Error> {
    client
        .update_auto_scaling_group()
        .auto_scaling_group_name(name)
        .max_size(size)
        .send()
        .await?;

    println!("Updated AutoScaling group");

    Ok(())
}
```
+  Per i dettagli sulle API, consulta il *riferimento [UpdateAutoScalingGroup](https://docs.rs/aws-sdk-autoscaling/latest/aws_sdk_autoscaling/client/struct.Client.html#method.update_auto_scaling_group)all'API AWS SDK for Rust*. 

------
#### [ SAP ABAP ]

**SDK per SAP ABAP**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/sap-abap/services/asc#code-examples). 

```
    " Example: iv_group_name = 'my-auto-scaling-group'
    " Example: iv_max_size = 5
    
    TRY.
        ao_asc->updateautoscalinggroup(
          iv_autoscalinggroupname = iv_group_name
          iv_maxsize = iv_max_size
          iv_minsize = iv_min_size ).

        MESSAGE 'Auto Scaling group updated successfully' TYPE 'I'.

      CATCH /aws1/cx_ascresrccontionfault INTO DATA(lo_contention).
        RAISE EXCEPTION lo_contention.
      CATCH /aws1/cx_ascscaactivityinprg00 INTO DATA(lo_activity_in_progress).
        RAISE EXCEPTION lo_activity_in_progress.
      CATCH /aws1/cx_rt_generic INTO DATA(lo_generic_exception).
        RAISE EXCEPTION lo_generic_exception.
    ENDTRY.
```
+  Per i dettagli sulle API, [UpdateAutoScalingGroup](https://docs.aws.amazon.com/sdk-for-sap-abap/v1/api/latest/index.html)consulta *AWS SDK for SAP ABAP* API reference. 

------

# Scenari per l'utilizzo dell'Auto Scaling AWS SDKs
<a name="auto-scaling_code_examples_scenarios"></a>

I seguenti esempi di codice mostrano come implementare scenari comuni in Auto Scaling con. AWS SDKs Questi scenari illustrano come eseguire attività specifiche chiamando più funzioni all’interno di Auto Scaling o in combinazione con altri Servizi AWS. Ogni scenario include un collegamento al codice sorgente completo, dove è possibile trovare le istruzioni su come configurare ed eseguire il codice. 

Gli scenari sono relativi a un livello intermedio di esperienza per aiutarti a comprendere le azioni di servizio nel contesto.

**Topics**
+ [Creazione e gestione di un servizio resiliente](auto-scaling_example_cross_ResilientService_section.md)

# Crea e gestisci un servizio resiliente utilizzando un SDK AWS
<a name="auto-scaling_example_cross_ResilientService_section"></a>

I seguenti esempi di codice mostrano come creare un servizio web con bilanciamento del carico che restituisca consigli su libri, film e canzoni. L’esempio mostra come il servizio risponde ai guasti e spiega come ristrutturarlo per una maggiore resilienza in caso di guasti.
+ Utilizza un gruppo Amazon EC2 Auto Scaling per creare istanze Amazon Elastic Compute Cloud (Amazon EC2) basate su un modello di avvio e per mantenere il numero di istanze entro un intervallo specificato.
+ Gestisci e distribuisci le richieste HTTP con Elastic Load Balancing.
+ Monitora lo stato delle istanze in un gruppo Auto Scaling e inoltra le richieste soltanto alle istanze integre.
+ Esegui un server Web Python su ogni istanza EC2 per gestire le richieste HTTP. Il server Web risponde con consigli e controlli dell’integrità.
+ Simula un servizio di raccomandazione con una tabella Amazon DynamoDB.
+ Controlla la risposta del server web alle richieste e ai controlli di integrità aggiornando AWS Systems Manager i parametri.

------
#### [ .NET ]

**SDK per .NET**  
 C'è di più su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv3/cross-service/ResilientService#code-examples). 
Esegui lo scenario interattivo al prompt dei comandi.  

```
    static async Task Main(string[] args)
    {
        _configuration = new ConfigurationBuilder()
            .SetBasePath(Directory.GetCurrentDirectory())
            .AddJsonFile("settings.json") // Load settings from .json file.
            .AddJsonFile("settings.local.json",
                true) // Optionally, load local settings.
            .Build();


        // Set up dependency injection for the AWS services.
        using var host = Host.CreateDefaultBuilder(args)
            .ConfigureLogging(logging =>
                logging.AddFilter("System", LogLevel.Debug)
                    .AddFilter<DebugLoggerProvider>("Microsoft", LogLevel.Information)
                    .AddFilter<ConsoleLoggerProvider>("Microsoft", LogLevel.Trace))
            .ConfigureServices((_, services) =>
                services.AddAWSService<IAmazonIdentityManagementService>()
                    .AddAWSService<IAmazonDynamoDB>()
                    .AddAWSService<IAmazonElasticLoadBalancingV2>()
                    .AddAWSService<IAmazonSimpleSystemsManagement>()
                    .AddAWSService<IAmazonAutoScaling>()
                    .AddAWSService<IAmazonEC2>()
                    .AddTransient<AutoScalerWrapper>()
                    .AddTransient<ElasticLoadBalancerWrapper>()
                    .AddTransient<SmParameterWrapper>()
                    .AddTransient<Recommendations>()
                    .AddSingleton<IConfiguration>(_configuration)
            )
            .Build();

        ServicesSetup(host);
        ResourcesSetup();

        try
        {
            Console.WriteLine(new string('-', 80));
            Console.WriteLine("Welcome to the Resilient Architecture Example Scenario.");
            Console.WriteLine(new string('-', 80));
            await Deploy(true);

            Console.WriteLine("Now let's begin the scenario.");
            Console.WriteLine(new string('-', 80));
            await Demo(true);

            Console.WriteLine(new string('-', 80));
            Console.WriteLine("Finally, let's clean up our resources.");
            Console.WriteLine(new string('-', 80));

            await DestroyResources(true);

            Console.WriteLine(new string('-', 80));
            Console.WriteLine("Resilient Architecture Example Scenario is complete.");
            Console.WriteLine(new string('-', 80));
        }
        catch (Exception ex)
        {
            Console.WriteLine(new string('-', 80));
            Console.WriteLine($"There was a problem running the scenario: {ex.Message}");
            await DestroyResources(true);
            Console.WriteLine(new string('-', 80));
        }
    }

    /// <summary>
    /// Setup any common resources, also used for integration testing.
    /// </summary>
    public static void ResourcesSetup()
    {
        _httpClient = new HttpClient();
    }

    /// <summary>
    /// Populate the services for use within the console application.
    /// </summary>
    /// <param name="host">The services host.</param>
    private static void ServicesSetup(IHost host)
    {
        _elasticLoadBalancerWrapper = host.Services.GetRequiredService<ElasticLoadBalancerWrapper>();
        _iamClient = host.Services.GetRequiredService<IAmazonIdentityManagementService>();
        _recommendations = host.Services.GetRequiredService<Recommendations>();
        _autoScalerWrapper = host.Services.GetRequiredService<AutoScalerWrapper>();
        _smParameterWrapper = host.Services.GetRequiredService<SmParameterWrapper>();
    }

    /// <summary>
    /// Deploy necessary resources for the scenario.
    /// </summary>
    /// <param name="interactive">True to run as interactive.</param>
    /// <returns>True if successful.</returns>
    public static async Task<bool> Deploy(bool interactive)
    {
        var protocol = "HTTP";
        var port = 80;
        var sshPort = 22;

        Console.WriteLine(
            "\nFor this demo, we'll use the AWS SDK for .NET to create several AWS resources\n" +
            "to set up a load-balanced web service endpoint and explore some ways to make it resilient\n" +
            "against various kinds of failures.\n\n" +
            "Some of the resources create by this demo are:\n");

        Console.WriteLine(
            "\t* A DynamoDB table that the web service depends on to provide book, movie, and song recommendations.");
        Console.WriteLine(
            "\t* An EC2 launch template that defines EC2 instances that each contain a Python web server.");
        Console.WriteLine(
            "\t* An EC2 Auto Scaling group that manages EC2 instances across several Availability Zones.");
        Console.WriteLine(
            "\t* An Elastic Load Balancing (ELB) load balancer that targets the Auto Scaling group to distribute requests.");
        Console.WriteLine(new string('-', 80));
        Console.WriteLine("Press Enter when you're ready to start deploying resources.");
        if (interactive)
            Console.ReadLine();

        // Create and populate the DynamoDB table.
        var databaseTableName = _configuration["databaseName"];
        var recommendationsPath = Path.Join(_configuration["resourcePath"],
            "recommendations_objects.json");
        Console.WriteLine($"Creating and populating a DynamoDB table named {databaseTableName}.");
        await _recommendations.CreateDatabaseWithName(databaseTableName);
        await _recommendations.PopulateDatabase(databaseTableName, recommendationsPath);
        Console.WriteLine(new string('-', 80));

        // Create the EC2 Launch Template.

        Console.WriteLine(
            $"Creating an EC2 launch template that runs 'server_startup_script.sh' when an instance starts.\n"
            + "\nThis script starts a Python web server defined in the `server.py` script. The web server\n"
            + "listens to HTTP requests on port 80 and responds to requests to '/' and to '/healthcheck'.\n"
            + "For demo purposes, this server is run as the root user. In production, the best practice is to\n"
            + "run a web server, such as Apache, with least-privileged credentials.");
        Console.WriteLine(
            "\nThe template also defines an IAM policy that each instance uses to assume a role that grants\n"
            + "permissions to access the DynamoDB recommendation table and Systems Manager parameters\n"
            + "that control the flow of the demo.");

        var startupScriptPath = Path.Join(_configuration["resourcePath"],
            "server_startup_script.sh");
        var instancePolicyPath = Path.Join(_configuration["resourcePath"],
            "instance_policy.json");
        await _autoScalerWrapper.CreateTemplate(startupScriptPath, instancePolicyPath);
        Console.WriteLine(new string('-', 80));

        Console.WriteLine(
            "Creating an EC2 Auto Scaling group that maintains three EC2 instances, each in a different\n"
            + "Availability Zone.\n");
        var zones = await _autoScalerWrapper.DescribeAvailabilityZones();
        await _autoScalerWrapper.CreateGroupOfSize(3, _autoScalerWrapper.GroupName, zones);
        Console.WriteLine(new string('-', 80));

        Console.WriteLine(
            "At this point, you have EC2 instances created. Once each instance starts, it listens for\n"
            + "HTTP requests. You can see these instances in the console or continue with the demo.\n");

        Console.WriteLine(new string('-', 80));
        Console.WriteLine("Press Enter when you're ready to continue.");
        if (interactive)
            Console.ReadLine();

        Console.WriteLine("Creating variables that control the flow of the demo.");
        await _smParameterWrapper.Reset();

        Console.WriteLine(
            "\nCreating an Elastic Load Balancing target group and load balancer. The target group\n"
            + "defines how the load balancer connects to instances. The load balancer provides a\n"
            + "single endpoint where clients connect and dispatches requests to instances in the group.");

        var defaultVpc = await _autoScalerWrapper.GetDefaultVpc();
        var subnets = await _autoScalerWrapper.GetAllVpcSubnetsForZones(defaultVpc.VpcId, zones);
        var subnetIds = subnets.Select(s => s.SubnetId).ToList();
        var targetGroup = await _elasticLoadBalancerWrapper.CreateTargetGroupOnVpc(_elasticLoadBalancerWrapper.TargetGroupName, protocol, port, defaultVpc.VpcId);

        await _elasticLoadBalancerWrapper.CreateLoadBalancerAndListener(_elasticLoadBalancerWrapper.LoadBalancerName, subnetIds, targetGroup);
        await _autoScalerWrapper.AttachLoadBalancerToGroup(_autoScalerWrapper.GroupName, targetGroup.TargetGroupArn);
        Console.WriteLine("\nVerifying access to the load balancer endpoint...");
        var endPoint = await _elasticLoadBalancerWrapper.GetEndpointForLoadBalancerByName(_elasticLoadBalancerWrapper.LoadBalancerName);
        var loadBalancerAccess = await _elasticLoadBalancerWrapper.VerifyLoadBalancerEndpoint(endPoint);

        if (!loadBalancerAccess)
        {
            Console.WriteLine("\nCouldn't connect to the load balancer, verifying that the port is open...");

            var ipString = await _httpClient.GetStringAsync("https://checkip.amazonaws.com");
            ipString = ipString.Trim();

            var defaultSecurityGroup = await _autoScalerWrapper.GetDefaultSecurityGroupForVpc(defaultVpc);
            var portIsOpen = _autoScalerWrapper.VerifyInboundPortForGroup(defaultSecurityGroup, port, ipString);
            var sshPortIsOpen = _autoScalerWrapper.VerifyInboundPortForGroup(defaultSecurityGroup, sshPort, ipString);

            if (!portIsOpen)
            {
                Console.WriteLine(
                    "\nFor this example to work, the default security group for your default VPC must\n"
                    + "allows access from this computer. You can either add it automatically from this\n"
                    + "example or add it yourself using the AWS Management Console.\n");

                if (!interactive || GetYesNoResponse(
                        "Do you want to add a rule to the security group to allow inbound traffic from your computer's IP address?"))
                {
                    await _autoScalerWrapper.OpenInboundPort(defaultSecurityGroup.GroupId, port, ipString);
                }
            }

            if (!sshPortIsOpen)
            {
                if (!interactive || GetYesNoResponse(
                        "Do you want to add a rule to the security group to allow inbound SSH traffic for debugging from your computer's IP address?"))
                {
                    await _autoScalerWrapper.OpenInboundPort(defaultSecurityGroup.GroupId, sshPort, ipString);
                }
            }
            loadBalancerAccess = await _elasticLoadBalancerWrapper.VerifyLoadBalancerEndpoint(endPoint);
        }

        if (loadBalancerAccess)
        {
            Console.WriteLine("Your load balancer is ready. You can access it by browsing to:");
            Console.WriteLine($"\thttp://{endPoint}\n");
        }
        else
        {
            Console.WriteLine(
                "\nCouldn't get a successful response from the load balancer endpoint. Troubleshoot by\n"
                + "manually verifying that your VPC and security group are configured correctly and that\n"
                + "you can successfully make a GET request to the load balancer endpoint:\n");
            Console.WriteLine($"\thttp://{endPoint}\n");
        }
        Console.WriteLine(new string('-', 80));
        Console.WriteLine("Press Enter when you're ready to continue with the demo.");
        if (interactive)
            Console.ReadLine();
        return true;
    }

    /// <summary>
    /// Demonstrate the steps of the scenario.
    /// </summary>
    /// <param name="interactive">True to run as an interactive scenario.</param>
    /// <returns>Async task.</returns>
    public static async Task<bool> Demo(bool interactive)
    {
        var ssmOnlyPolicy = Path.Join(_configuration["resourcePath"],
            "ssm_only_policy.json");

        Console.WriteLine(new string('-', 80));
        Console.WriteLine("Resetting parameters to starting values for demo.");
        await _smParameterWrapper.Reset();

        Console.WriteLine("\nThis part of the demonstration shows how to toggle different parts of the system\n" +
                          "to create situations where the web service fails, and shows how using a resilient\n" +
                          "architecture can keep the web service running in spite of these failures.");
        Console.WriteLine(new string('-', 88));
        Console.WriteLine("At the start, the load balancer endpoint returns recommendations and reports that all targets are healthy.");
        if (interactive)
            await DemoActionChoices();

        Console.WriteLine($"The web service running on the EC2 instances gets recommendations by querying a DynamoDB table.\n" +
                          $"The table name is contained in a Systems Manager parameter named '{_smParameterWrapper.TableParameter}'.\n" +
                          $"To simulate a failure of the recommendation service, let's set this parameter to name a non-existent table.\n");
        await _smParameterWrapper.PutParameterByName(_smParameterWrapper.TableParameter, "this-is-not-a-table");
        Console.WriteLine("\nNow, sending a GET request to the load balancer endpoint returns a failure code. But, the service reports as\n" +
                          "healthy to the load balancer because shallow health checks don't check for failure of the recommendation service.");
        if (interactive)
            await DemoActionChoices();

        Console.WriteLine("Instead of failing when the recommendation service fails, the web service can return a static response.");
        Console.WriteLine("While this is not a perfect solution, it presents the customer with a somewhat better experience than failure.");

        await _smParameterWrapper.PutParameterByName(_smParameterWrapper.FailureResponseParameter, "static");

        Console.WriteLine("\nNow, sending a GET request to the load balancer endpoint returns a static response.");
        Console.WriteLine("The service still reports as healthy because health checks are still shallow.");
        if (interactive)
            await DemoActionChoices();

        Console.WriteLine("Let's reinstate the recommendation service.\n");
        await _smParameterWrapper.PutParameterByName(_smParameterWrapper.TableParameter, _smParameterWrapper.TableName);
        Console.WriteLine(
            "\nLet's also substitute bad credentials for one of the instances in the target group so that it can't\n" +
            "access the DynamoDB recommendation table.\n"
        );
        await _autoScalerWrapper.CreateInstanceProfileWithName(
            _autoScalerWrapper.BadCredsPolicyName,
            _autoScalerWrapper.BadCredsRoleName,
            _autoScalerWrapper.BadCredsProfileName,
            ssmOnlyPolicy,
            new List<string> { "AmazonSSMManagedInstanceCore" }
        );
        var instances = await _autoScalerWrapper.GetInstancesByGroupName(_autoScalerWrapper.GroupName);
        var badInstanceId = instances.First();
        var instanceProfile = await _autoScalerWrapper.GetInstanceProfile(badInstanceId);
        Console.WriteLine(
            $"Replacing the profile for instance {badInstanceId} with a profile that contains\n" +
            "bad credentials...\n"
        );
        await _autoScalerWrapper.ReplaceInstanceProfile(
            badInstanceId,
            _autoScalerWrapper.BadCredsProfileName,
            instanceProfile.AssociationId
        );
        Console.WriteLine(
            "Now, sending a GET request to the load balancer endpoint returns either a recommendation or a static response,\n" +
            "depending on which instance is selected by the load balancer.\n"
        );
        if (interactive)
            await DemoActionChoices();

        Console.WriteLine("\nLet's implement a deep health check. For this demo, a deep health check tests whether");
        Console.WriteLine("the web service can access the DynamoDB table that it depends on for recommendations. Note that");
        Console.WriteLine("the deep health check is only for ELB routing and not for Auto Scaling instance health.");
        Console.WriteLine("This kind of deep health check is not recommended for Auto Scaling instance health, because it");
        Console.WriteLine("risks accidental termination of all instances in the Auto Scaling group when a dependent service fails.");

        Console.WriteLine("\nBy implementing deep health checks, the load balancer can detect when one of the instances is failing");
        Console.WriteLine("and take that instance out of rotation.");

        await _smParameterWrapper.PutParameterByName(_smParameterWrapper.HealthCheckParameter, "deep");

        Console.WriteLine($"\nNow, checking target health indicates that the instance with bad credentials ({badInstanceId})");
        Console.WriteLine("is unhealthy. Note that it might take a minute or two for the load balancer to detect the unhealthy");
        Console.WriteLine("instance. Sending a GET request to the load balancer endpoint always returns a recommendation, because");
        Console.WriteLine("the load balancer takes unhealthy instances out of its rotation.");

        if (interactive)
            await DemoActionChoices();

        Console.WriteLine("\nBecause the instances in this demo are controlled by an auto scaler, the simplest way to fix an unhealthy");
        Console.WriteLine("instance is to terminate it and let the auto scaler start a new instance to replace it.");

        await _autoScalerWrapper.TryTerminateInstanceById(badInstanceId);

        Console.WriteLine($"\nEven while the instance is terminating and the new instance is starting, sending a GET");
        Console.WriteLine("request to the web service continues to get a successful recommendation response because");
        Console.WriteLine("starts and reports as healthy, it is included in the load balancing rotation.");
        Console.WriteLine("Note that terminating and replacing an instance typically takes several minutes, during which time you");
        Console.WriteLine("can see the changing health check status until the new instance is running and healthy.");

        if (interactive)
            await DemoActionChoices();

        Console.WriteLine("\nIf the recommendation service fails now, deep health checks mean all instances report as unhealthy.");

        await _smParameterWrapper.PutParameterByName(_smParameterWrapper.TableParameter, "this-is-not-a-table");

        Console.WriteLine($"\nWhen all instances are unhealthy, the load balancer continues to route requests even to");
        Console.WriteLine("unhealthy instances, allowing them to fail open and return a static response rather than fail");
        Console.WriteLine("closed and report failure to the customer.");

        if (interactive)
            await DemoActionChoices();
        await _smParameterWrapper.Reset();

        Console.WriteLine(new string('-', 80));
        return true;
    }

    /// <summary>
    /// Clean up the resources from the scenario.
    /// </summary>
    /// <param name="interactive">True to ask the user for cleanup.</param>
    /// <returns>Async task.</returns>
    public static async Task<bool> DestroyResources(bool interactive)
    {
        Console.WriteLine(new string('-', 80));
        Console.WriteLine(
            "To keep things tidy and to avoid unwanted charges on your account, we can clean up all AWS resources\n" +
            "that were created for this demo."
        );

        if (!interactive || GetYesNoResponse("Do you want to clean up all demo resources? (y/n) "))
        {
            await _elasticLoadBalancerWrapper.DeleteLoadBalancerByName(_elasticLoadBalancerWrapper.LoadBalancerName);
            await _elasticLoadBalancerWrapper.DeleteTargetGroupByName(_elasticLoadBalancerWrapper.TargetGroupName);
            await _autoScalerWrapper.TerminateAndDeleteAutoScalingGroupWithName(_autoScalerWrapper.GroupName);
            await _autoScalerWrapper.DeleteKeyPairByName(_autoScalerWrapper.KeyPairName);
            await _autoScalerWrapper.DeleteTemplateByName(_autoScalerWrapper.LaunchTemplateName);
            await _autoScalerWrapper.DeleteInstanceProfile(
                _autoScalerWrapper.BadCredsProfileName,
                _autoScalerWrapper.BadCredsRoleName
            );
            await _recommendations.DestroyDatabaseByName(_recommendations.TableName);
        }
        else
        {
            Console.WriteLine(
                "Ok, we'll leave the resources intact.\n" +
                "Don't forget to delete them when you're done with them or you might incur unexpected charges."
            );
        }

        Console.WriteLine(new string('-', 80));
        return true;
    }
```
Crea una classe che racchiuda le operazioni di dimensionamento automatico e Amazon EC2.  

```
/// <summary>
/// Encapsulates Amazon EC2 Auto Scaling and EC2 management methods.
/// </summary>
public class AutoScalerWrapper
{
    private readonly IAmazonAutoScaling _amazonAutoScaling;
    private readonly IAmazonEC2 _amazonEc2;
    private readonly IAmazonSimpleSystemsManagement _amazonSsm;
    private readonly IAmazonIdentityManagementService _amazonIam;
    private readonly ILogger<AutoScalerWrapper> _logger;

    private readonly string _instanceType = "";
    private readonly string _amiParam = "";
    private readonly string _launchTemplateName = "";
    private readonly string _groupName = "";
    private readonly string _instancePolicyName = "";
    private readonly string _instanceRoleName = "";
    private readonly string _instanceProfileName = "";
    private readonly string _badCredsProfileName = "";
    private readonly string _badCredsRoleName = "";
    private readonly string _badCredsPolicyName = "";
    private readonly string _keyPairName = "";

    public string GroupName => _groupName;
    public string KeyPairName => _keyPairName;
    public string LaunchTemplateName => _launchTemplateName;
    public string InstancePolicyName => _instancePolicyName;
    public string BadCredsProfileName => _badCredsProfileName;
    public string BadCredsRoleName => _badCredsRoleName;
    public string BadCredsPolicyName => _badCredsPolicyName;

    /// <summary>
    /// Constructor for the AutoScalerWrapper.
    /// </summary>
    /// <param name="amazonAutoScaling">The injected AutoScaling client.</param>
    /// <param name="amazonEc2">The injected EC2 client.</param>
    /// <param name="amazonIam">The injected IAM client.</param>
    /// <param name="amazonSsm">The injected SSM client.</param>
    public AutoScalerWrapper(
        IAmazonAutoScaling amazonAutoScaling,
        IAmazonEC2 amazonEc2,
        IAmazonSimpleSystemsManagement amazonSsm,
        IAmazonIdentityManagementService amazonIam,
        IConfiguration configuration,
        ILogger<AutoScalerWrapper> logger)
    {
        _amazonAutoScaling = amazonAutoScaling;
        _amazonEc2 = amazonEc2;
        _amazonSsm = amazonSsm;
        _amazonIam = amazonIam;
        _logger = logger;

        var prefix = configuration["resourcePrefix"];
        _instanceType = configuration["instanceType"];
        _amiParam = configuration["amiParam"];

        _launchTemplateName = prefix + "-template";
        _groupName = prefix + "-group";
        _instancePolicyName = prefix + "-pol";
        _instanceRoleName = prefix + "-role";
        _instanceProfileName = prefix + "-prof";
        _badCredsPolicyName = prefix + "-bc-pol";
        _badCredsRoleName = prefix + "-bc-role";
        _badCredsProfileName = prefix + "-bc-prof";
        _keyPairName = prefix + "-key-pair";
    }

    /// <summary>
    /// Create a policy, role, and profile that is associated with instances with a specified name.
    /// An instance's associated profile defines a role that is assumed by the
    /// instance.The role has attached policies that specify the AWS permissions granted to
    /// clients that run on the instance.
    /// </summary>
    /// <param name="policyName">Name to use for the policy.</param>
    /// <param name="roleName">Name to use for the role.</param>
    /// <param name="profileName">Name to use for the profile.</param>
    /// <param name="ssmOnlyPolicyFile">Path to a policy file for SSM.</param>
    /// <param name="awsManagedPolicies">AWS Managed policies to be attached to the role.</param>
    /// <returns>The Arn of the profile.</returns>
    public async Task<string> CreateInstanceProfileWithName(
        string policyName,
        string roleName,
        string profileName,
        string ssmOnlyPolicyFile,
        List<string>? awsManagedPolicies = null)
    {

        var assumeRoleDoc = "{" +
                                   "\"Version\": \"2012-10-17\"," +
                                   "\"Statement\": [{" +
                                        "\"Effect\": \"Allow\"," +
                                        "\"Principal\": {" +
                                        "\"Service\": [" +
                                            "\"ec2.amazonaws.com\"" +
                                        "]" +
                                        "}," +
                                   "\"Action\": \"sts:AssumeRole\"" +
                                   "}]" +
                               "}";

        var policyDocument = await File.ReadAllTextAsync(ssmOnlyPolicyFile);

        var policyArn = "";

        try
        {
            var createPolicyResult = await _amazonIam.CreatePolicyAsync(
                new CreatePolicyRequest
                {
                    PolicyName = policyName,
                    PolicyDocument = policyDocument
                });
            policyArn = createPolicyResult.Policy.Arn;
        }
        catch (EntityAlreadyExistsException)
        {
            // The policy already exists, so we look it up to get the Arn.
            var policiesPaginator = _amazonIam.Paginators.ListPolicies(
                new ListPoliciesRequest()
                {
                    Scope = PolicyScopeType.Local
                });
            // Get the entire list using the paginator.
            await foreach (var policy in policiesPaginator.Policies)
            {
                if (policy.PolicyName.Equals(policyName))
                {
                    policyArn = policy.Arn;
                }
            }

            if (policyArn == null)
            {
                throw new InvalidOperationException("Policy not found");
            }
        }

        try
        {
            await _amazonIam.CreateRoleAsync(new CreateRoleRequest()
            {
                RoleName = roleName,
                AssumeRolePolicyDocument = assumeRoleDoc,
            });
            await _amazonIam.AttachRolePolicyAsync(new AttachRolePolicyRequest()
            {
                RoleName = roleName,
                PolicyArn = policyArn
            });
            if (awsManagedPolicies != null)
            {
                foreach (var awsPolicy in awsManagedPolicies)
                {
                    await _amazonIam.AttachRolePolicyAsync(new AttachRolePolicyRequest()
                    {
                        PolicyArn = $"arn:aws:iam::aws:policy/{awsPolicy}",
                        RoleName = roleName
                    });
                }
            }
        }
        catch (EntityAlreadyExistsException)
        {
            Console.WriteLine("Role already exists.");
        }

        string profileArn = "";
        try
        {
            var profileCreateResponse = await _amazonIam.CreateInstanceProfileAsync(
                new CreateInstanceProfileRequest()
                {
                    InstanceProfileName = profileName
                });
            // Allow time for the profile to be ready.
            profileArn = profileCreateResponse.InstanceProfile.Arn;
            Thread.Sleep(10000);
            await _amazonIam.AddRoleToInstanceProfileAsync(
                new AddRoleToInstanceProfileRequest()
                {
                    InstanceProfileName = profileName,
                    RoleName = roleName
                });

        }
        catch (EntityAlreadyExistsException)
        {
            Console.WriteLine("Policy already exists.");
            var profileGetResponse = await _amazonIam.GetInstanceProfileAsync(
                new GetInstanceProfileRequest()
                {
                    InstanceProfileName = profileName
                });
            profileArn = profileGetResponse.InstanceProfile.Arn;
        }
        return profileArn;
    }

    /// <summary>
    /// Create a new key pair and save the file.
    /// </summary>
    /// <param name="newKeyPairName">The name of the new key pair.</param>
    /// <returns>Async task.</returns>
    public async Task CreateKeyPair(string newKeyPairName)
    {
        try
        {
            var keyResponse = await _amazonEc2.CreateKeyPairAsync(
                new CreateKeyPairRequest() { KeyName = newKeyPairName });
            await File.WriteAllTextAsync($"{newKeyPairName}.pem",
                keyResponse.KeyPair.KeyMaterial);
            Console.WriteLine($"Created key pair {newKeyPairName}.");
        }
        catch (AlreadyExistsException)
        {
            Console.WriteLine("Key pair already exists.");
        }
    }

    /// <summary>
    /// Delete the key pair and file by name.
    /// </summary>
    /// <param name="deleteKeyPairName">The key pair to delete.</param>
    /// <returns>Async task.</returns>
    public async Task DeleteKeyPairByName(string deleteKeyPairName)
    {
        try
        {
            await _amazonEc2.DeleteKeyPairAsync(
                new DeleteKeyPairRequest() { KeyName = deleteKeyPairName });
            File.Delete($"{deleteKeyPairName}.pem");
        }
        catch (FileNotFoundException)
        {
            Console.WriteLine($"Key pair {deleteKeyPairName} not found.");
        }
    }

    /// <summary>
    /// Creates an Amazon EC2 launch template to use with Amazon EC2 Auto Scaling.
    /// The launch template specifies a Bash script in its user data field that runs after
    /// the instance is started. This script installs the Python packages and starts a Python
    /// web server on the instance.
    /// </summary>
    /// <param name="startupScriptPath">The path to a Bash script file that is run.</param>
    /// <param name="instancePolicyPath">The path to a permissions policy to create and attach to the profile.</param>
    /// <returns>The template object.</returns>
    public async Task<Amazon.EC2.Model.LaunchTemplate> CreateTemplate(string startupScriptPath, string instancePolicyPath)
    {
        try
        {
            await CreateKeyPair(_keyPairName);
            await CreateInstanceProfileWithName(_instancePolicyName, _instanceRoleName,
                _instanceProfileName, instancePolicyPath);

            var startServerText = await File.ReadAllTextAsync(startupScriptPath);
            var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(startServerText);

            var amiLatest = await _amazonSsm.GetParameterAsync(
                new GetParameterRequest() { Name = _amiParam });
            var amiId = amiLatest.Parameter.Value;
            var launchTemplateResponse = await _amazonEc2.CreateLaunchTemplateAsync(
                new CreateLaunchTemplateRequest()
                {
                    LaunchTemplateName = _launchTemplateName,
                    LaunchTemplateData = new RequestLaunchTemplateData()
                    {
                        InstanceType = _instanceType,
                        ImageId = amiId,
                        IamInstanceProfile =
                            new
                                LaunchTemplateIamInstanceProfileSpecificationRequest()
                            {
                                Name = _instanceProfileName
                            },
                        KeyName = _keyPairName,
                        UserData = System.Convert.ToBase64String(plainTextBytes)
                    }
                });
            return launchTemplateResponse.LaunchTemplate;
        }
        catch (AmazonEC2Exception ec2Exception)
        {
            if (ec2Exception.ErrorCode == "InvalidLaunchTemplateName.AlreadyExistsException")
            {
                _logger.LogError($"Could not create the template, the name {_launchTemplateName} already exists. " +
                                 $"Please try again with a unique name.");
            }

            throw;
        }
        catch (Exception ex)
        {
            _logger.LogError($"An error occurred while creating the template.: {ex.Message}");
            throw;
        }
    }

    /// <summary>
    /// Get a list of Availability Zones in the AWS Region of the Amazon EC2 Client.
    /// </summary>
    /// <returns>A list of availability zones.</returns>
    public async Task<List<string>> DescribeAvailabilityZones()
    {
        try
        {
            var zoneResponse = await _amazonEc2.DescribeAvailabilityZonesAsync(
                new DescribeAvailabilityZonesRequest());
            return zoneResponse.AvailabilityZones.Select(z => z.ZoneName).ToList();
        }
        catch (AmazonEC2Exception ec2Exception)
        {
            _logger.LogError($"An Amazon EC2 error occurred while listing availability zones.: {ec2Exception.Message}");
            throw;
        }
        catch (Exception ex)
        {
            _logger.LogError($"An error occurred while listing availability zones.: {ex.Message}");
            throw;
        }
    }

    /// <summary>
    /// Create an EC2 Auto Scaling group of a specified size and name.
    /// </summary>
    /// <param name="groupSize">The size for the group.</param>
    /// <param name="groupName">The name for the group.</param>
    /// <param name="availabilityZones">The availability zones for the group.</param>
    /// <returns>Async task.</returns>
    public async Task CreateGroupOfSize(int groupSize, string groupName, List<string> availabilityZones)
    {
        try
        {
            await _amazonAutoScaling.CreateAutoScalingGroupAsync(
                new CreateAutoScalingGroupRequest()
                {
                    AutoScalingGroupName = groupName,
                    AvailabilityZones = availabilityZones,
                    LaunchTemplate =
                        new Amazon.AutoScaling.Model.LaunchTemplateSpecification()
                        {
                            LaunchTemplateName = _launchTemplateName,
                            Version = "$Default"
                        },
                    MaxSize = groupSize,
                    MinSize = groupSize
                });
            Console.WriteLine($"Created EC2 Auto Scaling group {groupName} with size {groupSize}.");
        }
        catch (EntityAlreadyExistsException)
        {
            Console.WriteLine($"EC2 Auto Scaling group {groupName} already exists.");
        }
    }

    /// <summary>
    /// Get the default VPC for the account.
    /// </summary>
    /// <returns>The default VPC object.</returns>
    public async Task<Vpc> GetDefaultVpc()
    {
        try
        {
            var vpcResponse = await _amazonEc2.DescribeVpcsAsync(
                new DescribeVpcsRequest()
                {
                    Filters = new List<Amazon.EC2.Model.Filter>()
                    {
                        new("is-default", new List<string>() { "true" })
                    }
                });
            return vpcResponse.Vpcs[0];
        }
        catch (AmazonEC2Exception ec2Exception)
        {
            if (ec2Exception.ErrorCode == "UnauthorizedOperation")
            {
                _logger.LogError(ec2Exception, $"You do not have the necessary permissions to describe VPCs.");
            }

            throw;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, $"An error occurred while describing the vpcs.: {ex.Message}");
            throw;
        }
    }

    /// <summary>
    /// Get all the subnets for a Vpc in a set of availability zones.
    /// </summary>
    /// <param name="vpcId">The Id of the Vpc.</param>
    /// <param name="availabilityZones">The list of availability zones.</param>
    /// <returns>The collection of subnet objects.</returns>
    public async Task<List<Subnet>> GetAllVpcSubnetsForZones(string vpcId, List<string> availabilityZones)
    {
        try
        {
            var subnets = new List<Subnet>();
            var subnetPaginator = _amazonEc2.Paginators.DescribeSubnets(
                new DescribeSubnetsRequest()
                {
                    Filters = new List<Amazon.EC2.Model.Filter>()
                    {
                        new("vpc-id", new List<string>() { vpcId }),
                        new("availability-zone", availabilityZones),
                        new("default-for-az", new List<string>() { "true" })
                    }
                });

            // Get the entire list using the paginator.
            await foreach (var subnet in subnetPaginator.Subnets)
            {
                subnets.Add(subnet);
            }

            return subnets;
        }
        catch (AmazonEC2Exception ec2Exception)
        {
            if (ec2Exception.ErrorCode == "InvalidVpcID.NotFound")
            {
                _logger.LogError(ec2Exception, $"The specified VPC ID {vpcId} does not exist.");
            }

            throw;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, $"An error occurred while describing the subnets.: {ex.Message}");
            throw;
        }
    }

    /// <summary>
    /// Delete a launch template by name.
    /// </summary>
    /// <param name="templateName">The name of the template to delete.</param>
    /// <returns>Async task.</returns>
    public async Task DeleteTemplateByName(string templateName)
    {
        try
        {
            await _amazonEc2.DeleteLaunchTemplateAsync(
                new DeleteLaunchTemplateRequest()
                {
                    LaunchTemplateName = templateName
                });
        }
        catch (AmazonEC2Exception ec2Exception)
        {
            if (ec2Exception.ErrorCode == "InvalidLaunchTemplateName.NotFoundException")
            {
                _logger.LogError(
                    $"Could not delete the template, the name {_launchTemplateName} was not found.");
            }

            throw;
        }
        catch (Exception ex)
        {
            _logger.LogError($"An error occurred while deleting the template.: {ex.Message}");
            throw;
        }
    }

    /// <summary>
    /// Detaches a role from an instance profile, detaches policies from the role,
    /// and deletes all the resources.
    /// </summary>
    /// <param name="profileName">The name of the profile to delete.</param>
    /// <param name="roleName">The name of the role to delete.</param>
    /// <returns>Async task.</returns>
    public async Task DeleteInstanceProfile(string profileName, string roleName)
    {
        try
        {
            await _amazonIam.RemoveRoleFromInstanceProfileAsync(
                new RemoveRoleFromInstanceProfileRequest()
                {
                    InstanceProfileName = profileName,
                    RoleName = roleName
                });
            await _amazonIam.DeleteInstanceProfileAsync(
                new DeleteInstanceProfileRequest() { InstanceProfileName = profileName });
            var attachedPolicies = await _amazonIam.ListAttachedRolePoliciesAsync(
                new ListAttachedRolePoliciesRequest() { RoleName = roleName });
            foreach (var policy in attachedPolicies.AttachedPolicies)
            {
                await _amazonIam.DetachRolePolicyAsync(
                    new DetachRolePolicyRequest()
                    {
                        RoleName = roleName,
                        PolicyArn = policy.PolicyArn
                    });
                // Delete the custom policies only.
                if (!policy.PolicyArn.StartsWith("arn:aws:iam::aws"))
                {
                    await _amazonIam.DeletePolicyAsync(
                        new Amazon.IdentityManagement.Model.DeletePolicyRequest()
                        {
                            PolicyArn = policy.PolicyArn
                        });
                }
            }

            await _amazonIam.DeleteRoleAsync(
                new DeleteRoleRequest() { RoleName = roleName });
        }
        catch (NoSuchEntityException)
        {
            Console.WriteLine($"Instance profile {profileName} does not exist.");
        }
    }

    /// <summary>
    /// Gets data about the instances in an EC2 Auto Scaling group by its group name.
    /// </summary>
    /// <param name="group">The name of the auto scaling group.</param>
    /// <returns>A collection of instance Ids.</returns>
    public async Task<IEnumerable<string>> GetInstancesByGroupName(string group)
    {
        var instanceResponse = await _amazonAutoScaling.DescribeAutoScalingGroupsAsync(
            new DescribeAutoScalingGroupsRequest()
            {
                AutoScalingGroupNames = new List<string>() { group }
            });
        var instanceIds = instanceResponse.AutoScalingGroups.SelectMany(
            g => g.Instances.Select(i => i.InstanceId));
        return instanceIds;
    }

    /// <summary>
    /// Get the instance profile association data for an instance.
    /// </summary>
    /// <param name="instanceId">The Id of the instance.</param>
    /// <returns>Instance profile associations data.</returns>
    public async Task<IamInstanceProfileAssociation> GetInstanceProfile(string instanceId)
    {
        try
        {
            var response = await _amazonEc2.DescribeIamInstanceProfileAssociationsAsync(
                new DescribeIamInstanceProfileAssociationsRequest()
                {
                    Filters = new List<Amazon.EC2.Model.Filter>()
                    {
                        new("instance-id", new List<string>() { instanceId })
                    },
                });
            return response.IamInstanceProfileAssociations[0];
        }
        catch (AmazonEC2Exception ec2Exception)
        {
            if (ec2Exception.ErrorCode == "InvalidInstanceID.NotFound")
            {
                _logger.LogError(ec2Exception, $"Instance {instanceId} not found");
            }

            throw;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, $"An error occurred while creating the template.: {ex.Message}");
            throw;
        }
    }

    /// <summary>
    /// Replace the profile associated with a running instance. After the profile is replaced, the instance
    /// is rebooted to ensure that it uses the new profile. When the instance is ready, Systems Manager is
    /// used to restart the Python web server.
    /// </summary>
    /// <param name="instanceId">The Id of the instance to update.</param>
    /// <param name="credsProfileName">The name of the new profile to associate with the specified instance.</param>
    /// <param name="associationId">The Id of the existing profile association for the instance.</param>
    /// <returns>Async task.</returns>
    public async Task ReplaceInstanceProfile(string instanceId, string credsProfileName, string associationId)
    {
        try
        {
            await _amazonEc2.ReplaceIamInstanceProfileAssociationAsync(
                new ReplaceIamInstanceProfileAssociationRequest()
                {
                    AssociationId = associationId,
                    IamInstanceProfile = new IamInstanceProfileSpecification()
                    {
                        Name = credsProfileName
                    }
                });
            // Allow time before resetting.
            Thread.Sleep(25000);

            await _amazonEc2.RebootInstancesAsync(
                new RebootInstancesRequest(new List<string>() { instanceId }));
            Thread.Sleep(25000);
            var instanceReady = false;
            var retries = 5;
            while (retries-- > 0 && !instanceReady)
            {
                var instancesPaginator =
                    _amazonSsm.Paginators.DescribeInstanceInformation(
                        new DescribeInstanceInformationRequest());
                // Get the entire list using the paginator.
                await foreach (var instance in instancesPaginator.InstanceInformationList)
                {
                    instanceReady = instance.InstanceId == instanceId;
                    if (instanceReady)
                    {
                        break;
                    }
                }
            }
            Console.WriteLine("Waiting for instance to be running.");
            await WaitForInstanceState(instanceId, InstanceStateName.Running);
            Console.WriteLine("Instance ready.");
            Console.WriteLine($"Sending restart command to instance {instanceId}");
            await _amazonSsm.SendCommandAsync(
                new SendCommandRequest()
                {
                    InstanceIds = new List<string>() { instanceId },
                    DocumentName = "AWS-RunShellScript",
                    Parameters = new Dictionary<string, List<string>>()
                    {
                        {
                            "commands",
                            new List<string>() { "cd / && sudo python3 server.py 80" }
                        }
                    }
                });
            Console.WriteLine($"Restarted the web server on instance {instanceId}");
        }
        catch (AmazonEC2Exception ec2Exception)
        {
            if (ec2Exception.ErrorCode == "InvalidInstanceID.NotFound")
            {
                _logger.LogError(ec2Exception, $"Instance {instanceId} not found");
            }

            throw;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, $"An error occurred while replacing the template.: {ex.Message}");
            throw;
        }
    }

    /// <summary>
    /// Try to terminate an instance by its Id.
    /// </summary>
    /// <param name="instanceId">The Id of the instance to terminate.</param>
    /// <returns>Async task.</returns>
    public async Task TryTerminateInstanceById(string instanceId)
    {
        var stopping = false;
        Console.WriteLine($"Stopping {instanceId}...");
        while (!stopping)
        {
            try
            {
                await _amazonAutoScaling.TerminateInstanceInAutoScalingGroupAsync(
                    new TerminateInstanceInAutoScalingGroupRequest()
                    {
                        InstanceId = instanceId,
                        ShouldDecrementDesiredCapacity = false
                    });
                stopping = true;
            }
            catch (ScalingActivityInProgressException)
            {
                Console.WriteLine($"Scaling activity in progress for {instanceId}. Waiting...");
                Thread.Sleep(10000);
            }
        }
    }

    /// <summary>
    /// Tries to delete the EC2 Auto Scaling group. If the group is in use or in progress,
    /// waits and retries until the group is successfully deleted.
    /// </summary>
    /// <param name="groupName">The name of the group to try to delete.</param>
    /// <returns>Async task.</returns>
    public async Task TryDeleteGroupByName(string groupName)
    {
        var stopped = false;
        while (!stopped)
        {
            try
            {
                await _amazonAutoScaling.DeleteAutoScalingGroupAsync(
                    new DeleteAutoScalingGroupRequest()
                    {
                        AutoScalingGroupName = groupName
                    });
                stopped = true;
            }
            catch (Exception e)
                when ((e is ScalingActivityInProgressException)
                      || (e is Amazon.AutoScaling.Model.ResourceInUseException))
            {
                Console.WriteLine($"Some instances are still running. Waiting...");
                Thread.Sleep(10000);
            }
        }
    }

    /// <summary>
    /// Terminate instances and delete the Auto Scaling group by name.
    /// </summary>
    /// <param name="groupName">The name of the group to delete.</param>
    /// <returns>Async task.</returns>
    public async Task TerminateAndDeleteAutoScalingGroupWithName(string groupName)
    {
        var describeGroupsResponse = await _amazonAutoScaling.DescribeAutoScalingGroupsAsync(
            new DescribeAutoScalingGroupsRequest()
            {
                AutoScalingGroupNames = new List<string>() { groupName }
            });
        if (describeGroupsResponse.AutoScalingGroups.Any())
        {
            // Update the size to 0.
            await _amazonAutoScaling.UpdateAutoScalingGroupAsync(
                new UpdateAutoScalingGroupRequest()
                {
                    AutoScalingGroupName = groupName,
                    MinSize = 0
                });
            var group = describeGroupsResponse.AutoScalingGroups[0];
            foreach (var instance in group.Instances)
            {
                await TryTerminateInstanceById(instance.InstanceId);
            }

            await TryDeleteGroupByName(groupName);
        }
        else
        {
            Console.WriteLine($"No groups found with name {groupName}.");
        }
    }


    /// <summary>
    /// Get the default security group for a specified Vpc.
    /// </summary>
    /// <param name="vpc">The Vpc to search.</param>
    /// <returns>The default security group.</returns>
    public async Task<SecurityGroup> GetDefaultSecurityGroupForVpc(Vpc vpc)
    {
        var groupResponse = await _amazonEc2.DescribeSecurityGroupsAsync(
            new DescribeSecurityGroupsRequest()
            {
                Filters = new List<Amazon.EC2.Model.Filter>()
                {
                    new ("group-name", new List<string>() { "default" }),
                    new ("vpc-id", new List<string>() { vpc.VpcId })
                }
            });
        return groupResponse.SecurityGroups[0];
    }

    /// <summary>
    /// Verify the default security group of a Vpc allows ingress from the calling computer.
    /// This can be done by allowing ingress from this computer's IP address.
    /// In some situations, such as connecting from a corporate network, you must instead specify
    /// a prefix list Id. You can also temporarily open the port to any IP address while running this example.
    /// If you do, be sure to remove public access when you're done.
    /// </summary>
    /// <param name="vpc">The group to check.</param>
    /// <param name="port">The port to verify.</param>
    /// <param name="ipAddress">This computer's IP address.</param>
    /// <returns>True if the ip address is allowed on the group.</returns>
    public bool VerifyInboundPortForGroup(SecurityGroup group, int port, string ipAddress)
    {
        var portIsOpen = false;
        foreach (var ipPermission in group.IpPermissions)
        {
            if (ipPermission.FromPort == port)
            {
                foreach (var ipRange in ipPermission.Ipv4Ranges)
                {
                    var cidr = ipRange.CidrIp;
                    if (cidr.StartsWith(ipAddress) || cidr == "0.0.0.0/0")
                    {
                        portIsOpen = true;
                    }
                }

                if (ipPermission.PrefixListIds.Any())
                {
                    portIsOpen = true;
                }

                if (!portIsOpen)
                {
                    Console.WriteLine("The inbound rule does not appear to be open to either this computer's IP\n" +
                                      "address, to all IP addresses (0.0.0.0/0), or to a prefix list ID.");
                }
                else
                {
                    break;
                }
            }
        }

        return portIsOpen;
    }

    /// <summary>
    /// Add an ingress rule to the specified security group that allows access on the
    /// specified port from the specified IP address.
    /// </summary>
    /// <param name="groupId">The Id of the security group to modify.</param>
    /// <param name="port">The port to open.</param>
    /// <param name="ipAddress">The IP address to allow access.</param>
    /// <returns>Async task.</returns>
    public async Task OpenInboundPort(string groupId, int port, string ipAddress)
    {
        await _amazonEc2.AuthorizeSecurityGroupIngressAsync(
            new AuthorizeSecurityGroupIngressRequest()
            {
                GroupId = groupId,
                IpPermissions = new List<IpPermission>()
                {
                    new IpPermission()
                    {
                        FromPort = port,
                        ToPort = port,
                        IpProtocol = "tcp",
                        Ipv4Ranges = new List<IpRange>()
                        {
                            new IpRange() { CidrIp = $"{ipAddress}/32" }
                        }
                    }
                }
            });
    }

    /// <summary>
    /// Attaches an Elastic Load Balancing (ELB) target group to this EC2 Auto Scaling group.
    /// The
    /// </summary>
    /// <param name="autoScalingGroupName">The name of the Auto Scaling group.</param>
    /// <param name="targetGroupArn">The Arn for the target group.</param>
    /// <returns>Async task.</returns>
    public async Task AttachLoadBalancerToGroup(string autoScalingGroupName, string targetGroupArn)
    {
        await _amazonAutoScaling.AttachLoadBalancerTargetGroupsAsync(
            new AttachLoadBalancerTargetGroupsRequest()
            {
                AutoScalingGroupName = autoScalingGroupName,
                TargetGroupARNs = new List<string>() { targetGroupArn }
            });
    }

    /// <summary>
    /// Wait until an EC2 instance is in a specified state.
    /// </summary>
    /// <param name="instanceId">The instance Id.</param>
    /// <param name="stateName">The state to wait for.</param>
    /// <returns>A Boolean value indicating the success of the action.</returns>
    public async Task<bool> WaitForInstanceState(string instanceId, InstanceStateName stateName)
    {
        var request = new DescribeInstancesRequest
        {
            InstanceIds = new List<string> { instanceId }
        };

        // Wait until the instance is in the specified state.
        var hasState = false;
        do
        {
            // Wait 5 seconds.
            Thread.Sleep(5000);

            // Check for the desired state.
            var response = await _amazonEc2.DescribeInstancesAsync(request);
            var instance = response.Reservations[0].Instances[0];
            hasState = instance.State.Name == stateName;
            Console.Write(". ");
        } while (!hasState);

        return hasState;
    }
}
```
Crea una classe che racchiuda le operazioni di Elastic Load Balancing.  

```
/// <summary>
/// Encapsulates Elastic Load Balancer actions.
/// </summary>
public class ElasticLoadBalancerWrapper
{
    private readonly IAmazonElasticLoadBalancingV2 _amazonElasticLoadBalancingV2;
    private string? _endpoint = null;
    private readonly string _targetGroupName = "";
    private readonly string _loadBalancerName = "";
    HttpClient _httpClient = new();

    public string TargetGroupName => _targetGroupName;
    public string LoadBalancerName => _loadBalancerName;

    /// <summary>
    /// Constructor for the Elastic Load Balancer wrapper.
    /// </summary>
    /// <param name="amazonElasticLoadBalancingV2">The injected load balancing v2 client.</param>
    /// <param name="configuration">The injected configuration.</param>
    public ElasticLoadBalancerWrapper(
        IAmazonElasticLoadBalancingV2 amazonElasticLoadBalancingV2,
        IConfiguration configuration)
    {
        _amazonElasticLoadBalancingV2 = amazonElasticLoadBalancingV2;
        var prefix = configuration["resourcePrefix"];
        _targetGroupName = prefix + "-tg";
        _loadBalancerName = prefix + "-lb";
    }

    /// <summary>
    /// Get the HTTP Endpoint of a load balancer by its name.
    /// </summary>
    /// <param name="loadBalancerName">The name of the load balancer.</param>
    /// <returns>The HTTP endpoint.</returns>
    public async Task<string> GetEndpointForLoadBalancerByName(string loadBalancerName)
    {
        if (_endpoint == null)
        {
            var endpointResponse =
                await _amazonElasticLoadBalancingV2.DescribeLoadBalancersAsync(
                    new DescribeLoadBalancersRequest()
                    {
                        Names = new List<string>() { loadBalancerName }
                    });
            _endpoint = endpointResponse.LoadBalancers[0].DNSName;
        }

        return _endpoint;
    }

    /// <summary>
    /// Return the GET response for an endpoint as text.
    /// </summary>
    /// <param name="endpoint">The endpoint for the request.</param>
    /// <returns>The request response.</returns>
    public async Task<string> GetEndPointResponse(string endpoint)
    {
        var endpointResponse = await _httpClient.GetAsync($"http://{endpoint}");
        var textResponse = await endpointResponse.Content.ReadAsStringAsync();
        return textResponse!;
    }

    /// <summary>
    /// Get the target health for a group by name.
    /// </summary>
    /// <param name="groupName">The name of the group.</param>
    /// <returns>The collection of health descriptions.</returns>
    public async Task<List<TargetHealthDescription>> CheckTargetHealthForGroup(string groupName)
    {
        List<TargetHealthDescription> result = null!;
        try
        {
            var groupResponse =
                await _amazonElasticLoadBalancingV2.DescribeTargetGroupsAsync(
                    new DescribeTargetGroupsRequest()
                    {
                        Names = new List<string>() { groupName }
                    });
            var healthResponse =
                await _amazonElasticLoadBalancingV2.DescribeTargetHealthAsync(
                    new DescribeTargetHealthRequest()
                    {
                        TargetGroupArn = groupResponse.TargetGroups[0].TargetGroupArn
                    });
            ;
            result = healthResponse.TargetHealthDescriptions;
        }
        catch (TargetGroupNotFoundException)
        {
            Console.WriteLine($"Target group {groupName} not found.");
        }
        return result;
    }

    /// <summary>
    /// Create an Elastic Load Balancing target group. The target group specifies how the load balancer forwards
    /// requests to instances in the group and how instance health is checked.
    ///
    /// To speed up this demo, the health check is configured with shortened times and lower thresholds. In production,
    /// you might want to decrease the sensitivity of your health checks to avoid unwanted failures.
    /// </summary>
    /// <param name="groupName">The name for the group.</param>
    /// <param name="protocol">The protocol, such as HTTP.</param>
    /// <param name="port">The port to use to forward requests, such as 80.</param>
    /// <param name="vpcId">The Id of the Vpc in which the load balancer exists.</param>
    /// <returns>The new TargetGroup object.</returns>
    public async Task<TargetGroup> CreateTargetGroupOnVpc(string groupName, ProtocolEnum protocol, int port, string vpcId)
    {
        var createResponse = await _amazonElasticLoadBalancingV2.CreateTargetGroupAsync(
            new CreateTargetGroupRequest()
            {
                Name = groupName,
                Protocol = protocol,
                Port = port,
                HealthCheckPath = "/healthcheck",
                HealthCheckIntervalSeconds = 10,
                HealthCheckTimeoutSeconds = 5,
                HealthyThresholdCount = 2,
                UnhealthyThresholdCount = 2,
                VpcId = vpcId
            });
        var targetGroup = createResponse.TargetGroups[0];
        return targetGroup;
    }

    /// <summary>
    /// Create an Elastic Load Balancing load balancer that uses the specified subnets
    /// and forwards requests to the specified target group.
    /// </summary>
    /// <param name="name">The name for the new load balancer.</param>
    /// <param name="subnetIds">Subnets for the load balancer.</param>
    /// <param name="targetGroup">Target group for forwarded requests.</param>
    /// <returns>The new LoadBalancer object.</returns>
    public async Task<LoadBalancer> CreateLoadBalancerAndListener(string name, List<string> subnetIds, TargetGroup targetGroup)
    {
        var createLbResponse = await _amazonElasticLoadBalancingV2.CreateLoadBalancerAsync(
            new CreateLoadBalancerRequest()
            {
                Name = name,
                Subnets = subnetIds
            });
        var loadBalancerArn = createLbResponse.LoadBalancers[0].LoadBalancerArn;

        // Wait for load balancer to be available.
        var loadBalancerReady = false;
        while (!loadBalancerReady)
        {
            try
            {
                var describeResponse =
                    await _amazonElasticLoadBalancingV2.DescribeLoadBalancersAsync(
                        new DescribeLoadBalancersRequest()
                        {
                            Names = new List<string>() { name }
                        });

                var loadBalancerState = describeResponse.LoadBalancers[0].State.Code;

                loadBalancerReady = loadBalancerState == LoadBalancerStateEnum.Active;
            }
            catch (LoadBalancerNotFoundException)
            {
                loadBalancerReady = false;
            }
            Thread.Sleep(10000);
        }
        // Create the listener.
        await _amazonElasticLoadBalancingV2.CreateListenerAsync(
            new CreateListenerRequest()
            {
                LoadBalancerArn = loadBalancerArn,
                Protocol = targetGroup.Protocol,
                Port = targetGroup.Port,
                DefaultActions = new List<Action>()
                {
                    new Action()
                    {
                        Type = ActionTypeEnum.Forward,
                        TargetGroupArn = targetGroup.TargetGroupArn
                    }
                }
            });
        return createLbResponse.LoadBalancers[0];
    }

    /// <summary>
    /// Verify this computer can successfully send a GET request to the
    /// load balancer endpoint.
    /// </summary>
    /// <param name="endpoint">The endpoint to check.</param>
    /// <returns>True if successful.</returns>
    public async Task<bool> VerifyLoadBalancerEndpoint(string endpoint)
    {
        var success = false;
        var retries = 3;
        while (!success && retries > 0)
        {
            try
            {
                var endpointResponse = await _httpClient.GetAsync($"http://{endpoint}");
                Console.WriteLine($"Response: {endpointResponse.StatusCode}.");

                if (endpointResponse.IsSuccessStatusCode)
                {
                    success = true;
                }
                else
                {
                    retries = 0;
                }
            }
            catch (HttpRequestException)
            {
                Console.WriteLine("Connection error, retrying...");
                retries--;
                Thread.Sleep(10000);
            }
        }

        return success;
    }

    /// <summary>
    /// Delete a load balancer by its specified name.
    /// </summary>
    /// <param name="name">The name of the load balancer to delete.</param>
    /// <returns>Async task.</returns>
    public async Task DeleteLoadBalancerByName(string name)
    {
        try
        {
            var describeLoadBalancerResponse =
                await _amazonElasticLoadBalancingV2.DescribeLoadBalancersAsync(
                    new DescribeLoadBalancersRequest()
                    {
                        Names = new List<string>() { name }
                    });
            var lbArn = describeLoadBalancerResponse.LoadBalancers[0].LoadBalancerArn;
            await _amazonElasticLoadBalancingV2.DeleteLoadBalancerAsync(
                new DeleteLoadBalancerRequest()
                {
                    LoadBalancerArn = lbArn
                }
            );
        }
        catch (LoadBalancerNotFoundException)
        {
            Console.WriteLine($"Load balancer {name} not found.");
        }
    }

    /// <summary>
    /// Delete a TargetGroup by its specified name.
    /// </summary>
    /// <param name="groupName">Name of the group to delete.</param>
    /// <returns>Async task.</returns>
    public async Task DeleteTargetGroupByName(string groupName)
    {
        var done = false;
        while (!done)
        {
            try
            {
                var groupResponse =
                    await _amazonElasticLoadBalancingV2.DescribeTargetGroupsAsync(
                        new DescribeTargetGroupsRequest()
                        {
                            Names = new List<string>() { groupName }
                        });

                var targetArn = groupResponse.TargetGroups[0].TargetGroupArn;
                await _amazonElasticLoadBalancingV2.DeleteTargetGroupAsync(
                    new DeleteTargetGroupRequest() { TargetGroupArn = targetArn });
                Console.WriteLine($"Deleted load balancing target group {groupName}.");
                done = true;
            }
            catch (TargetGroupNotFoundException)
            {
                Console.WriteLine(
                    $"Target group {groupName} not found, could not delete.");
                done = true;
            }
            catch (ResourceInUseException)
            {
                Console.WriteLine("Target group not yet released, waiting...");
                Thread.Sleep(10000);
            }
        }
    }
}
```
Crea una classe che utilizzi DynamoDB per simulare un servizio di raccomandazione.  

```
/// <summary>
/// Encapsulates a DynamoDB table to use as a service that recommends books, movies, and songs.
/// </summary>
public class Recommendations
{
    private readonly IAmazonDynamoDB _amazonDynamoDb;
    private readonly DynamoDBContext _context;
    private readonly string _tableName;

    public string TableName => _tableName;

    /// <summary>
    /// Constructor for the Recommendations service.
    /// </summary>
    /// <param name="amazonDynamoDb">The injected DynamoDb client.</param>
    /// <param name="configuration">The injected configuration.</param>
    public Recommendations(IAmazonDynamoDB amazonDynamoDb, IConfiguration configuration)
    {
        _amazonDynamoDb = amazonDynamoDb;
        _context = new DynamoDBContext(_amazonDynamoDb);
        _tableName = configuration["databaseName"]!;
    }

    /// <summary>
    /// Create the DynamoDb table with a specified name.
    /// </summary>
    /// <param name="tableName">The name for the table.</param>
    /// <returns>True when ready.</returns>
    public async Task<bool> CreateDatabaseWithName(string tableName)
    {
        try
        {
            Console.Write($"Creating table {tableName}...");
            var createRequest = new CreateTableRequest()
            {
                TableName = tableName,
                AttributeDefinitions = new List<AttributeDefinition>()
                    {
                        new AttributeDefinition()
                        {
                            AttributeName = "MediaType",
                            AttributeType = ScalarAttributeType.S
                        },
                        new AttributeDefinition()
                        {
                            AttributeName = "ItemId",
                            AttributeType = ScalarAttributeType.N
                        }
                    },
                KeySchema = new List<KeySchemaElement>()
                    {
                        new KeySchemaElement()
                        {
                            AttributeName = "MediaType",
                            KeyType = KeyType.HASH
                        },
                        new KeySchemaElement()
                        {
                            AttributeName = "ItemId",
                            KeyType = KeyType.RANGE
                        }
                    },
                ProvisionedThroughput = new ProvisionedThroughput()
                {
                    ReadCapacityUnits = 5,
                    WriteCapacityUnits = 5
                }
            };
            await _amazonDynamoDb.CreateTableAsync(createRequest);

            // Wait until the table is ACTIVE and then report success.
            Console.Write("\nWaiting for table to become active...");

            var request = new DescribeTableRequest
            {
                TableName = tableName
            };

            TableStatus status;
            do
            {
                Thread.Sleep(2000);

                var describeTableResponse = await _amazonDynamoDb.DescribeTableAsync(request);
                status = describeTableResponse.Table.TableStatus;

                Console.Write(".");
            }
            while (status != "ACTIVE");

            return status == TableStatus.ACTIVE;
        }
        catch (ResourceInUseException)
        {
            Console.WriteLine($"Table {tableName} already exists.");
            return false;
        }
    }

    /// <summary>
    /// Populate the database table with data from a specified path.
    /// </summary>
    /// <param name="databaseTableName">The name of the table.</param>
    /// <param name="recommendationsPath">The path of the recommendations data.</param>
    /// <returns>Async task.</returns>
    public async Task PopulateDatabase(string databaseTableName, string recommendationsPath)
    {
        var recommendationsText = await File.ReadAllTextAsync(recommendationsPath);
        var records =
            JsonSerializer.Deserialize<RecommendationModel[]>(recommendationsText);
        var batchWrite = _context.CreateBatchWrite<RecommendationModel>();

        foreach (var record in records!)
        {
            batchWrite.AddPutItem(record);
        }

        await batchWrite.ExecuteAsync();
    }

    /// <summary>
    /// Delete the recommendation table by name.
    /// </summary>
    /// <param name="tableName">The name of the recommendation table.</param>
    /// <returns>Async task.</returns>
    public async Task DestroyDatabaseByName(string tableName)
    {
        try
        {
            await _amazonDynamoDb.DeleteTableAsync(
                new DeleteTableRequest() { TableName = tableName });
            Console.WriteLine($"Table {tableName} was deleted.");
        }
        catch (ResourceNotFoundException)
        {
            Console.WriteLine($"Table {tableName} not found");
        }
    }
}
```
Crea una classe che racchiuda le operazioni di Systems Manager.  

```
/// <summary>
/// Encapsulates Systems Manager parameter operations. This example uses these parameters
/// to drive the demonstration of resilient architecture, such as failure of a dependency or
/// how the service responds to a health check.
/// </summary>
public class SmParameterWrapper
{
    private readonly IAmazonSimpleSystemsManagement _amazonSimpleSystemsManagement;

    private readonly string _tableParameter = "doc-example-resilient-architecture-table";
    private readonly string _failureResponseParameter = "doc-example-resilient-architecture-failure-response";
    private readonly string _healthCheckParameter = "doc-example-resilient-architecture-health-check";
    private readonly string _tableName = "";

    public string TableParameter => _tableParameter;
    public string TableName => _tableName;
    public string HealthCheckParameter => _healthCheckParameter;
    public string FailureResponseParameter => _failureResponseParameter;

    /// <summary>
    /// Constructor for the SmParameterWrapper.
    /// </summary>
    /// <param name="amazonSimpleSystemsManagement">The injected Simple Systems Management client.</param>
    /// <param name="configuration">The injected configuration.</param>
    public SmParameterWrapper(IAmazonSimpleSystemsManagement amazonSimpleSystemsManagement, IConfiguration configuration)
    {
        _amazonSimpleSystemsManagement = amazonSimpleSystemsManagement;
        _tableName = configuration["databaseName"]!;
    }

    /// <summary>
    /// Reset the Systems Manager parameters to starting values for the demo.
    /// </summary>
    /// <returns>Async task.</returns>
    public async Task Reset()
    {
        await this.PutParameterByName(_tableParameter, _tableName);
        await this.PutParameterByName(_failureResponseParameter, "none");
        await this.PutParameterByName(_healthCheckParameter, "shallow");
    }

    /// <summary>
    /// Set the value of a named Systems Manager parameter.
    /// </summary>
    /// <param name="name">The name of the parameter.</param>
    /// <param name="value">The value to set.</param>
    /// <returns>Async task.</returns>
    public async Task PutParameterByName(string name, string value)
    {
        await _amazonSimpleSystemsManagement.PutParameterAsync(
            new PutParameterRequest() { Name = name, Value = value, Overwrite = true });
    }
}
```
+ Per informazioni dettagliate sull’API, consulta i seguenti argomenti nella *documentazione di riferimento dell’API AWS SDK per .NET *.
  + [AttachLoadBalancerTargetGroups](https://docs.aws.amazon.com/goto/DotNetSDKV3/autoscaling-2011-01-01/AttachLoadBalancerTargetGroups)
  + [CreateAutoScalingGroup](https://docs.aws.amazon.com/goto/DotNetSDKV3/autoscaling-2011-01-01/CreateAutoScalingGroup)
  + [CreateInstanceProfile](https://docs.aws.amazon.com/goto/DotNetSDKV3/iam-2010-05-08/CreateInstanceProfile)
  + [CreateLaunchTemplate](https://docs.aws.amazon.com/goto/DotNetSDKV3/ec2-2016-11-15/CreateLaunchTemplate)
  + [CreateListener](https://docs.aws.amazon.com/goto/DotNetSDKV3/elasticloadbalancingv2-2015-12-01/CreateListener)
  + [CreateLoadBalancer](https://docs.aws.amazon.com/goto/DotNetSDKV3/elasticloadbalancingv2-2015-12-01/CreateLoadBalancer)
  + [CreateTargetGroup](https://docs.aws.amazon.com/goto/DotNetSDKV3/elasticloadbalancingv2-2015-12-01/CreateTargetGroup)
  + [DeleteAutoScalingGroup](https://docs.aws.amazon.com/goto/DotNetSDKV3/autoscaling-2011-01-01/DeleteAutoScalingGroup)
  + [DeleteInstanceProfile](https://docs.aws.amazon.com/goto/DotNetSDKV3/iam-2010-05-08/DeleteInstanceProfile)
  + [DeleteLaunchTemplate](https://docs.aws.amazon.com/goto/DotNetSDKV3/ec2-2016-11-15/DeleteLaunchTemplate)
  + [DeleteLoadBalancer](https://docs.aws.amazon.com/goto/DotNetSDKV3/elasticloadbalancingv2-2015-12-01/DeleteLoadBalancer)
  + [DeleteTargetGroup](https://docs.aws.amazon.com/goto/DotNetSDKV3/elasticloadbalancingv2-2015-12-01/DeleteTargetGroup)
  + [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/DotNetSDKV3/autoscaling-2011-01-01/DescribeAutoScalingGroups)
  + [DescribeAvailabilityZones](https://docs.aws.amazon.com/goto/DotNetSDKV3/ec2-2016-11-15/DescribeAvailabilityZones)
  + [DescribeIamInstanceProfileAssociations](https://docs.aws.amazon.com/goto/DotNetSDKV3/ec2-2016-11-15/DescribeIamInstanceProfileAssociations)
  + [DescribeInstances](https://docs.aws.amazon.com/goto/DotNetSDKV3/ec2-2016-11-15/DescribeInstances)
  + [DescribeLoadBalancers](https://docs.aws.amazon.com/goto/DotNetSDKV3/elasticloadbalancingv2-2015-12-01/DescribeLoadBalancers)
  + [DescribeSubnets](https://docs.aws.amazon.com/goto/DotNetSDKV3/ec2-2016-11-15/DescribeSubnets)
  + [DescribeTargetGroups](https://docs.aws.amazon.com/goto/DotNetSDKV3/elasticloadbalancingv2-2015-12-01/DescribeTargetGroups)
  + [DescribeTargetHealth](https://docs.aws.amazon.com/goto/DotNetSDKV3/elasticloadbalancingv2-2015-12-01/DescribeTargetHealth)
  + [DescribeVpcs](https://docs.aws.amazon.com/goto/DotNetSDKV3/ec2-2016-11-15/DescribeVpcs)
  + [RebootInstances](https://docs.aws.amazon.com/goto/DotNetSDKV3/ec2-2016-11-15/RebootInstances)
  + [ReplaceIamInstanceProfileAssociation](https://docs.aws.amazon.com/goto/DotNetSDKV3/ec2-2016-11-15/ReplaceIamInstanceProfileAssociation)
  + [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/goto/DotNetSDKV3/autoscaling-2011-01-01/TerminateInstanceInAutoScalingGroup)
  + [UpdateAutoScalingGroup](https://docs.aws.amazon.com/goto/DotNetSDKV3/autoscaling-2011-01-01/UpdateAutoScalingGroup)

------
#### [ Java ]

**SDK per Java 2.x**  
 C'è dell'altro GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/usecases/resilient_service#code-examples). 
Esegui lo scenario interattivo al prompt dei comandi.  

```
public class Main {

    public static final String fileName = "C:\\AWS\\resworkflow\\recommendations.json"; // Modify file location.
    public static final String tableName = "doc-example-recommendation-service";
    public static final String startScript = "C:\\AWS\\resworkflow\\server_startup_script.sh"; // Modify file location.
    public static final String policyFile = "C:\\AWS\\resworkflow\\instance_policy.json"; // Modify file location.
    public static final String ssmJSON = "C:\\AWS\\resworkflow\\ssm_only_policy.json"; // Modify file location.
    public static final String failureResponse = "doc-example-resilient-architecture-failure-response";
    public static final String healthCheck = "doc-example-resilient-architecture-health-check";
    public static final String templateName = "doc-example-resilience-template";
    public static final String roleName = "doc-example-resilience-role";
    public static final String policyName = "doc-example-resilience-pol";
    public static final String profileName = "doc-example-resilience-prof";

    public static final String badCredsProfileName = "doc-example-resilience-prof-bc";

    public static final String targetGroupName = "doc-example-resilience-tg";
    public static final String autoScalingGroupName = "doc-example-resilience-group";
    public static final String lbName = "doc-example-resilience-lb";
    public static final String protocol = "HTTP";
    public static final int port = 80;

    public static final String DASHES = new String(new char[80]).replace("\0", "-");

    public static void main(String[] args) throws IOException, InterruptedException {
        Scanner in = new Scanner(System.in);
        Database database = new Database();
        AutoScaler autoScaler = new AutoScaler();
        LoadBalancer loadBalancer = new LoadBalancer();

        System.out.println(DASHES);
        System.out.println("Welcome to the demonstration of How to Build and Manage a Resilient Service!");
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("A - SETUP THE RESOURCES");
        System.out.println("Press Enter when you're ready to start deploying resources.");
        in.nextLine();
        deploy(loadBalancer);
        System.out.println(DASHES);
        System.out.println(DASHES);
        System.out.println("B - DEMO THE RESILIENCE FUNCTIONALITY");
        System.out.println("Press Enter when you're ready.");
        in.nextLine();
        demo(loadBalancer);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("C - DELETE THE RESOURCES");
        System.out.println("""
                This concludes the demo of how to build and manage a resilient service.
                To keep things tidy and to avoid unwanted charges on your account, we can clean up all AWS resources
                that were created for this demo.
                """);

        System.out.println("\n Do you want to delete the resources (y/n)? ");
        String userInput = in.nextLine().trim().toLowerCase(); // Capture user input

        if (userInput.equals("y")) {
            // Delete resources here
            deleteResources(loadBalancer, autoScaler, database);
            System.out.println("Resources deleted.");
        } else {
            System.out.println("""
                    Okay, we'll leave the resources intact.
                    Don't forget to delete them when you're done with them or you might incur unexpected charges.
                    """);
        }
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("The example has completed. ");
        System.out.println("\n Thanks for watching!");
        System.out.println(DASHES);
    }

    // Deletes the AWS resources used in this example.
    private static void deleteResources(LoadBalancer loadBalancer, AutoScaler autoScaler, Database database)
            throws IOException, InterruptedException {
        loadBalancer.deleteLoadBalancer(lbName);
        System.out.println("*** Wait 30 secs for resource to be deleted");
        TimeUnit.SECONDS.sleep(30);
        loadBalancer.deleteTargetGroup(targetGroupName);
        autoScaler.deleteAutoScaleGroup(autoScalingGroupName);
        autoScaler.deleteRolesPolicies(policyName, roleName, profileName);
        autoScaler.deleteTemplate(templateName);
        database.deleteTable(tableName);
    }

    private static void deploy(LoadBalancer loadBalancer) throws InterruptedException, IOException {
        Scanner in = new Scanner(System.in);
        System.out.println(
                """
                        For this demo, we'll use the AWS SDK for Java (v2) to create several AWS resources
                        to set up a load-balanced web service endpoint and explore some ways to make it resilient
                        against various kinds of failures.

                        Some of the resources create by this demo are:
                        \t* A DynamoDB table that the web service depends on to provide book, movie, and song recommendations.
                        \t* An EC2 launch template that defines EC2 instances that each contain a Python web server.
                        \t* An EC2 Auto Scaling group that manages EC2 instances across several Availability Zones.
                        \t* An Elastic Load Balancing (ELB) load balancer that targets the Auto Scaling group to distribute requests.
                        """);

        System.out.println("Press Enter when you're ready.");
        in.nextLine();
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("Creating and populating a DynamoDB table named " + tableName);
        Database database = new Database();
        database.createTable(tableName, fileName);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("""
                Creating an EC2 launch template that runs '{startup_script}' when an instance starts.
                This script starts a Python web server defined in the `server.py` script. The web server
                listens to HTTP requests on port 80 and responds to requests to '/' and to '/healthcheck'.
                For demo purposes, this server is run as the root user. In production, the best practice is to
                run a web server, such as Apache, with least-privileged credentials.

                The template also defines an IAM policy that each instance uses to assume a role that grants
                permissions to access the DynamoDB recommendation table and Systems Manager parameters
                that control the flow of the demo.
                """);

        LaunchTemplateCreator templateCreator = new LaunchTemplateCreator();
        templateCreator.createTemplate(policyFile, policyName, profileName, startScript, templateName, roleName);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println(
                "Creating an EC2 Auto Scaling group that maintains three EC2 instances, each in a different Availability Zone.");
        System.out.println("*** Wait 30 secs for the VPC to be created");
        TimeUnit.SECONDS.sleep(30);
        AutoScaler autoScaler = new AutoScaler();
        String[] zones = autoScaler.createGroup(3, templateName, autoScalingGroupName);

        System.out.println("""
                At this point, you have EC2 instances created. Once each instance starts, it listens for
                HTTP requests. You can see these instances in the console or continue with the demo.
                Press Enter when you're ready to continue.
                """);

        in.nextLine();
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("Creating variables that control the flow of the demo.");
        ParameterHelper paramHelper = new ParameterHelper();
        paramHelper.reset();
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("""
                Creating an Elastic Load Balancing target group and load balancer. The target group
                defines how the load balancer connects to instances. The load balancer provides a
                single endpoint where clients connect and dispatches requests to instances in the group.
                """);

        String vpcId = autoScaler.getDefaultVPC();
        List<Subnet> subnets = autoScaler.getSubnets(vpcId, zones);
        System.out.println("You have retrieved a list with " + subnets.size() + " subnets");
        String targetGroupArn = loadBalancer.createTargetGroup(protocol, port, vpcId, targetGroupName);
        String elbDnsName = loadBalancer.createLoadBalancer(subnets, targetGroupArn, lbName, port, protocol);
        autoScaler.attachLoadBalancerTargetGroup(autoScalingGroupName, targetGroupArn);
        System.out.println("Verifying access to the load balancer endpoint...");
        boolean wasSuccessul = loadBalancer.verifyLoadBalancerEndpoint(elbDnsName);
        if (!wasSuccessul) {
            System.out.println("Couldn't connect to the load balancer, verifying that the port is open...");
            CloseableHttpClient httpClient = HttpClients.createDefault();

            // Create an HTTP GET request to "http://checkip.amazonaws.com"
            HttpGet httpGet = new HttpGet("http://checkip.amazonaws.com");
            try {
                // Execute the request and get the response
                HttpResponse response = httpClient.execute(httpGet);

                // Read the response content.
                String ipAddress = IOUtils.toString(response.getEntity().getContent(), StandardCharsets.UTF_8).trim();

                // Print the public IP address.
                System.out.println("Public IP Address: " + ipAddress);
                GroupInfo groupInfo = autoScaler.verifyInboundPort(vpcId, port, ipAddress);
                if (!groupInfo.isPortOpen()) {
                    System.out.println("""
                            For this example to work, the default security group for your default VPC must
                            allow access from this computer. You can either add it automatically from this
                            example or add it yourself using the AWS Management Console.
                            """);

                    System.out.println(
                            "Do you want to add a rule to security group " + groupInfo.getGroupName() + " to allow");
                    System.out.println("inbound traffic on port " + port + " from your computer's IP address (y/n) ");
                    String ans = in.nextLine();
                    if ("y".equalsIgnoreCase(ans)) {
                        autoScaler.openInboundPort(groupInfo.getGroupName(), String.valueOf(port), ipAddress);
                        System.out.println("Security group rule added.");
                    } else {
                        System.out.println("No security group rule added.");
                    }
                }

            } catch (AutoScalingException e) {
                e.printStackTrace();
            }
        } else if (wasSuccessul) {
            System.out.println("Your load balancer is ready. You can access it by browsing to:");
            System.out.println("\t http://" + elbDnsName);
        } else {
            System.out.println("Couldn't get a successful response from the load balancer endpoint. Troubleshoot by");
            System.out.println("manually verifying that your VPC and security group are configured correctly and that");
            System.out.println("you can successfully make a GET request to the load balancer.");
        }

        System.out.println("Press Enter when you're ready to continue with the demo.");
        in.nextLine();
    }

    // A method that controls the demo part of the Java program.
    public static void demo(LoadBalancer loadBalancer) throws IOException, InterruptedException {
        ParameterHelper paramHelper = new ParameterHelper();
        System.out.println("Read the ssm_only_policy.json file");
        String ssmOnlyPolicy = readFileAsString(ssmJSON);

        System.out.println("Resetting parameters to starting values for demo.");
        paramHelper.reset();

        System.out.println(
                """
                         This part of the demonstration shows how to toggle different parts of the system
                         to create situations where the web service fails, and shows how using a resilient
                         architecture can keep the web service running in spite of these failures.

                         At the start, the load balancer endpoint returns recommendations and reports that all targets are healthy.
                        """);
        demoChoices(loadBalancer);

        System.out.println(
                """
                         The web service running on the EC2 instances gets recommendations by querying a DynamoDB table.
                         The table name is contained in a Systems Manager parameter named self.param_helper.table.
                         To simulate a failure of the recommendation service, let's set this parameter to name a non-existent table.
                        """);
        paramHelper.put(paramHelper.tableName, "this-is-not-a-table");

        System.out.println(
                """
                         \nNow, sending a GET request to the load balancer endpoint returns a failure code. But, the service reports as
                         healthy to the load balancer because shallow health checks don't check for failure of the recommendation service.
                        """);
        demoChoices(loadBalancer);

        System.out.println(
                """
                        Instead of failing when the recommendation service fails, the web service can return a static response.
                        While this is not a perfect solution, it presents the customer with a somewhat better experience than failure.
                        """);
        paramHelper.put(paramHelper.failureResponse, "static");

        System.out.println("""
                Now, sending a GET request to the load balancer endpoint returns a static response.
                The service still reports as healthy because health checks are still shallow.
                """);
        demoChoices(loadBalancer);

        System.out.println("Let's reinstate the recommendation service.");
        paramHelper.put(paramHelper.tableName, paramHelper.dyntable);

        System.out.println("""
                Let's also substitute bad credentials for one of the instances in the target group so that it can't
                access the DynamoDB recommendation table. We will get an instance id value.
                """);

        LaunchTemplateCreator templateCreator = new LaunchTemplateCreator();
        AutoScaler autoScaler = new AutoScaler();

        // Create a new instance profile based on badCredsProfileName.
        templateCreator.createInstanceProfile(policyFile, policyName, badCredsProfileName, roleName);
        String badInstanceId = autoScaler.getBadInstance(autoScalingGroupName);
        System.out.println("The bad instance id values used for this demo is " + badInstanceId);

        String profileAssociationId = autoScaler.getInstanceProfile(badInstanceId);
        System.out.println("The association Id value is " + profileAssociationId);
        System.out.println("Replacing the profile for instance " + badInstanceId
                + " with a profile that contains bad credentials");
        autoScaler.replaceInstanceProfile(badInstanceId, badCredsProfileName, profileAssociationId);

        System.out.println(
                """
                        Now, sending a GET request to the load balancer endpoint returns either a recommendation or a static response,
                        depending on which instance is selected by the load balancer.
                        """);

        demoChoices(loadBalancer);

        System.out.println("""
                Let's implement a deep health check. For this demo, a deep health check tests whether
                the web service can access the DynamoDB table that it depends on for recommendations. Note that
                the deep health check is only for ELB routing and not for Auto Scaling instance health.
                This kind of deep health check is not recommended for Auto Scaling instance health, because it
                risks accidental termination of all instances in the Auto Scaling group when a dependent service fails.
                """);

        System.out.println("""
                By implementing deep health checks, the load balancer can detect when one of the instances is failing
                and take that instance out of rotation.
                """);

        paramHelper.put(paramHelper.healthCheck, "deep");

        System.out.println("""
                Now, checking target health indicates that the instance with bad credentials
                is unhealthy. Note that it might take a minute or two for the load balancer to detect the unhealthy
                instance. Sending a GET request to the load balancer endpoint always returns a recommendation, because
                the load balancer takes unhealthy instances out of its rotation.
                """);

        demoChoices(loadBalancer);

        System.out.println(
                """
                        Because the instances in this demo are controlled by an auto scaler, the simplest way to fix an unhealthy
                        instance is to terminate it and let the auto scaler start a new instance to replace it.
                        """);
        autoScaler.terminateInstance(badInstanceId);

        System.out.println("""
                Even while the instance is terminating and the new instance is starting, sending a GET
                request to the web service continues to get a successful recommendation response because
                the load balancer routes requests to the healthy instances. After the replacement instance
                starts and reports as healthy, it is included in the load balancing rotation.
                Note that terminating and replacing an instance typically takes several minutes, during which time you
                can see the changing health check status until the new instance is running and healthy.
                """);

        demoChoices(loadBalancer);
        System.out.println(
                "If the recommendation service fails now, deep health checks mean all instances report as unhealthy.");
        paramHelper.put(paramHelper.tableName, "this-is-not-a-table");

        demoChoices(loadBalancer);
        paramHelper.reset();
    }

    public static void demoChoices(LoadBalancer loadBalancer) throws IOException, InterruptedException {
        String[] actions = {
                "Send a GET request to the load balancer endpoint.",
                "Check the health of load balancer targets.",
                "Go to the next part of the demo."
        };
        Scanner scanner = new Scanner(System.in);

        while (true) {
            System.out.println("-".repeat(88));
            System.out.println("See the current state of the service by selecting one of the following choices:");
            for (int i = 0; i < actions.length; i++) {
                System.out.println(i + ": " + actions[i]);
            }

            try {
                System.out.print("\nWhich action would you like to take? ");
                int choice = scanner.nextInt();
                System.out.println("-".repeat(88));

                switch (choice) {
                    case 0 -> {
                        System.out.println("Request:\n");
                        System.out.println("GET http://" + loadBalancer.getEndpoint(lbName));
                        CloseableHttpClient httpClient = HttpClients.createDefault();

                        // Create an HTTP GET request to the ELB.
                        HttpGet httpGet = new HttpGet("http://" + loadBalancer.getEndpoint(lbName));

                        // Execute the request and get the response.
                        HttpResponse response = httpClient.execute(httpGet);
                        int statusCode = response.getStatusLine().getStatusCode();
                        System.out.println("HTTP Status Code: " + statusCode);

                        // Display the JSON response
                        BufferedReader reader = new BufferedReader(
                                new InputStreamReader(response.getEntity().getContent()));
                        StringBuilder jsonResponse = new StringBuilder();
                        String line;
                        while ((line = reader.readLine()) != null) {
                            jsonResponse.append(line);
                        }
                        reader.close();

                        // Print the formatted JSON response.
                        System.out.println("Full Response:\n");
                        System.out.println(jsonResponse.toString());

                        // Close the HTTP client.
                        httpClient.close();

                    }
                    case 1 -> {
                        System.out.println("\nChecking the health of load balancer targets:\n");
                        List<TargetHealthDescription> health = loadBalancer.checkTargetHealth(targetGroupName);
                        for (TargetHealthDescription target : health) {
                            System.out.printf("\tTarget %s on port %d is %s%n", target.target().id(),
                                    target.target().port(), target.targetHealth().stateAsString());
                        }
                        System.out.println("""
                                Note that it can take a minute or two for the health check to update
                                after changes are made.
                                """);
                    }
                    case 2 -> {
                        System.out.println("\nOkay, let's move on.");
                        System.out.println("-".repeat(88));
                        return; // Exit the method when choice is 2
                    }
                    default -> System.out.println("You must choose a value between 0-2. Please select again.");
                }

            } catch (java.util.InputMismatchException e) {
                System.out.println("Invalid input. Please select again.");
                scanner.nextLine(); // Clear the input buffer.
            }
        }
    }

    public static String readFileAsString(String filePath) throws IOException {
        byte[] bytes = Files.readAllBytes(Paths.get(filePath));
        return new String(bytes);
    }
}
```
Crea una classe che racchiuda le operazioni di dimensionamento automatico e Amazon EC2.  

```
public class AutoScaler {

    private static Ec2Client ec2Client;
    private static AutoScalingClient autoScalingClient;
    private static IamClient iamClient;

    private static SsmClient ssmClient;

    private IamClient getIAMClient() {
        if (iamClient == null) {
            iamClient = IamClient.builder()
                    .region(Region.US_EAST_1)
                    .build();
        }
        return iamClient;
    }

    private SsmClient getSSMClient() {
        if (ssmClient == null) {
            ssmClient = SsmClient.builder()
                    .region(Region.US_EAST_1)
                    .build();
        }
        return ssmClient;
    }

    private Ec2Client getEc2Client() {
        if (ec2Client == null) {
            ec2Client = Ec2Client.builder()
                    .region(Region.US_EAST_1)
                    .build();
        }
        return ec2Client;
    }

    private AutoScalingClient getAutoScalingClient() {
        if (autoScalingClient == null) {
            autoScalingClient = AutoScalingClient.builder()
                    .region(Region.US_EAST_1)
                    .build();
        }
        return autoScalingClient;
    }

    /**
     * Terminates and instances in an EC2 Auto Scaling group. After an instance is
     * terminated, it can no longer be accessed.
     */
    public void terminateInstance(String instanceId) {
        TerminateInstanceInAutoScalingGroupRequest terminateInstanceIRequest = TerminateInstanceInAutoScalingGroupRequest
                .builder()
                .instanceId(instanceId)
                .shouldDecrementDesiredCapacity(false)
                .build();

        getAutoScalingClient().terminateInstanceInAutoScalingGroup(terminateInstanceIRequest);
        System.out.format("Terminated instance %s.", instanceId);
    }

    /**
     * Replaces the profile associated with a running instance. After the profile is
     * replaced, the instance is rebooted to ensure that it uses the new profile.
     * When
     * the instance is ready, Systems Manager is used to restart the Python web
     * server.
     */
    public void replaceInstanceProfile(String instanceId, String newInstanceProfileName, String profileAssociationId)
            throws InterruptedException {
        // Create an IAM instance profile specification.
        software.amazon.awssdk.services.ec2.model.IamInstanceProfileSpecification iamInstanceProfile = software.amazon.awssdk.services.ec2.model.IamInstanceProfileSpecification
                .builder()
                .name(newInstanceProfileName) // Make sure 'newInstanceProfileName' is a valid IAM Instance Profile
                                              // name.
                .build();

        // Replace the IAM instance profile association for the EC2 instance.
        ReplaceIamInstanceProfileAssociationRequest replaceRequest = ReplaceIamInstanceProfileAssociationRequest
                .builder()
                .iamInstanceProfile(iamInstanceProfile)
                .associationId(profileAssociationId) // Make sure 'profileAssociationId' is a valid association ID.
                .build();

        try {
            getEc2Client().replaceIamInstanceProfileAssociation(replaceRequest);
            // Handle the response as needed.
        } catch (Ec2Exception e) {
            // Handle exceptions, log, or report the error.
            System.err.println("Error: " + e.getMessage());
        }
        System.out.format("Replaced instance profile for association %s with profile %s.", profileAssociationId,
                newInstanceProfileName);
        TimeUnit.SECONDS.sleep(15);
        boolean instReady = false;
        int tries = 0;

        // Reboot after 60 seconds
        while (!instReady) {
            if (tries % 6 == 0) {
                getEc2Client().rebootInstances(RebootInstancesRequest.builder()
                        .instanceIds(instanceId)
                        .build());
                System.out.println("Rebooting instance " + instanceId + " and waiting for it to be ready.");
            }
            tries++;
            try {
                TimeUnit.SECONDS.sleep(10);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

            DescribeInstanceInformationResponse informationResponse = getSSMClient().describeInstanceInformation();
            List<InstanceInformation> instanceInformationList = informationResponse.instanceInformationList();
            for (InstanceInformation info : instanceInformationList) {
                if (info.instanceId().equals(instanceId)) {
                    instReady = true;
                    break;
                }
            }
        }

        SendCommandRequest sendCommandRequest = SendCommandRequest.builder()
                .instanceIds(instanceId)
                .documentName("AWS-RunShellScript")
                .parameters(Collections.singletonMap("commands",
                        Collections.singletonList("cd / && sudo python3 server.py 80")))
                .build();

        getSSMClient().sendCommand(sendCommandRequest);
        System.out.println("Restarted the Python web server on instance " + instanceId + ".");
    }

    public void openInboundPort(String secGroupId, String port, String ipAddress) {
        AuthorizeSecurityGroupIngressRequest ingressRequest = AuthorizeSecurityGroupIngressRequest.builder()
                .groupName(secGroupId)
                .cidrIp(ipAddress)
                .fromPort(Integer.parseInt(port))
                .build();

        getEc2Client().authorizeSecurityGroupIngress(ingressRequest);
        System.out.format("Authorized ingress to %s on port %s from %s.", secGroupId, port, ipAddress);
    }

    /**
     * Detaches a role from an instance profile, detaches policies from the role,
     * and deletes all the resources.
     */
    public void deleteInstanceProfile(String roleName, String profileName) {
        try {
            software.amazon.awssdk.services.iam.model.GetInstanceProfileRequest getInstanceProfileRequest = software.amazon.awssdk.services.iam.model.GetInstanceProfileRequest
                    .builder()
                    .instanceProfileName(profileName)
                    .build();

            GetInstanceProfileResponse response = getIAMClient().getInstanceProfile(getInstanceProfileRequest);
            String name = response.instanceProfile().instanceProfileName();
            System.out.println(name);

            RemoveRoleFromInstanceProfileRequest profileRequest = RemoveRoleFromInstanceProfileRequest.builder()
                    .instanceProfileName(profileName)
                    .roleName(roleName)
                    .build();

            getIAMClient().removeRoleFromInstanceProfile(profileRequest);
            DeleteInstanceProfileRequest deleteInstanceProfileRequest = DeleteInstanceProfileRequest.builder()
                    .instanceProfileName(profileName)
                    .build();

            getIAMClient().deleteInstanceProfile(deleteInstanceProfileRequest);
            System.out.println("Deleted instance profile " + profileName);

            DeleteRoleRequest deleteRoleRequest = DeleteRoleRequest.builder()
                    .roleName(roleName)
                    .build();

            // List attached role policies.
            ListAttachedRolePoliciesResponse rolesResponse = getIAMClient()
                    .listAttachedRolePolicies(role -> role.roleName(roleName));
            List<AttachedPolicy> attachedPolicies = rolesResponse.attachedPolicies();
            for (AttachedPolicy attachedPolicy : attachedPolicies) {
                DetachRolePolicyRequest request = DetachRolePolicyRequest.builder()
                        .roleName(roleName)
                        .policyArn(attachedPolicy.policyArn())
                        .build();

                getIAMClient().detachRolePolicy(request);
                System.out.println("Detached and deleted policy " + attachedPolicy.policyName());
            }

            getIAMClient().deleteRole(deleteRoleRequest);
            System.out.println("Instance profile and role deleted.");

        } catch (IamException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

    public void deleteTemplate(String templateName) {
        getEc2Client().deleteLaunchTemplate(name -> name.launchTemplateName(templateName));
        System.out.format(templateName + " was deleted.");
    }

    public void deleteAutoScaleGroup(String groupName) {
        DeleteAutoScalingGroupRequest deleteAutoScalingGroupRequest = DeleteAutoScalingGroupRequest.builder()
                .autoScalingGroupName(groupName)
                .forceDelete(true)
                .build();

        getAutoScalingClient().deleteAutoScalingGroup(deleteAutoScalingGroupRequest);
        System.out.println(groupName + " was deleted.");
    }

    /*
     * Verify the default security group of the specified VPC allows ingress from
     * this
     * computer. This can be done by allowing ingress from this computer's IP
     * address. In some situations, such as connecting from a corporate network, you
     * must instead specify a prefix list ID. You can also temporarily open the port
     * to
     * any IP address while running this example. If you do, be sure to remove
     * public
     * access when you're done.
     * 
     */
    public GroupInfo verifyInboundPort(String VPC, int port, String ipAddress) {
        boolean portIsOpen = false;
        GroupInfo groupInfo = new GroupInfo();
        try {
            Filter filter = Filter.builder()
                    .name("group-name")
                    .values("default")
                    .build();

            Filter filter1 = Filter.builder()
                    .name("vpc-id")
                    .values(VPC)
                    .build();

            DescribeSecurityGroupsRequest securityGroupsRequest = DescribeSecurityGroupsRequest.builder()
                    .filters(filter, filter1)
                    .build();

            DescribeSecurityGroupsResponse securityGroupsResponse = getEc2Client()
                    .describeSecurityGroups(securityGroupsRequest);
            String securityGroup = securityGroupsResponse.securityGroups().get(0).groupName();
            groupInfo.setGroupName(securityGroup);

            for (SecurityGroup secGroup : securityGroupsResponse.securityGroups()) {
                System.out.println("Found security group: " + secGroup.groupId());

                for (IpPermission ipPermission : secGroup.ipPermissions()) {
                    if (ipPermission.fromPort() == port) {
                        System.out.println("Found inbound rule: " + ipPermission);
                        for (IpRange ipRange : ipPermission.ipRanges()) {
                            String cidrIp = ipRange.cidrIp();
                            if (cidrIp.startsWith(ipAddress) || cidrIp.equals("0.0.0.0/0")) {
                                System.out.println(cidrIp + " is applicable");
                                portIsOpen = true;
                            }
                        }

                        if (!ipPermission.prefixListIds().isEmpty()) {
                            System.out.println("Prefix lList is applicable");
                            portIsOpen = true;
                        }

                        if (!portIsOpen) {
                            System.out
                                    .println("The inbound rule does not appear to be open to either this computer's IP,"
                                            + " all IP addresses (0.0.0.0/0), or to a prefix list ID.");
                        } else {
                            break;
                        }
                    }
                }
            }

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
        }

        groupInfo.setPortOpen(portIsOpen);
        return groupInfo;
    }

    /*
     * Attaches an Elastic Load Balancing (ELB) target group to this EC2 Auto
     * Scaling group.
     * The target group specifies how the load balancer forward requests to the
     * instances
     * in the group.
     */
    public void attachLoadBalancerTargetGroup(String asGroupName, String targetGroupARN) {
        try {
            AttachLoadBalancerTargetGroupsRequest targetGroupsRequest = AttachLoadBalancerTargetGroupsRequest.builder()
                    .autoScalingGroupName(asGroupName)
                    .targetGroupARNs(targetGroupARN)
                    .build();

            getAutoScalingClient().attachLoadBalancerTargetGroups(targetGroupsRequest);
            System.out.println("Attached load balancer to " + asGroupName);

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    // Creates an EC2 Auto Scaling group with the specified size.
    public String[] createGroup(int groupSize, String templateName, String autoScalingGroupName) {

        // Get availability zones.
        software.amazon.awssdk.services.ec2.model.DescribeAvailabilityZonesRequest zonesRequest = software.amazon.awssdk.services.ec2.model.DescribeAvailabilityZonesRequest
                .builder()
                .build();

        DescribeAvailabilityZonesResponse zonesResponse = getEc2Client().describeAvailabilityZones(zonesRequest);
        List<String> availabilityZoneNames = zonesResponse.availabilityZones().stream()
                .map(software.amazon.awssdk.services.ec2.model.AvailabilityZone::zoneName)
                .collect(Collectors.toList());

        String availabilityZones = String.join(",", availabilityZoneNames);
        LaunchTemplateSpecification specification = LaunchTemplateSpecification.builder()
                .launchTemplateName(templateName)
                .version("$Default")
                .build();

        String[] zones = availabilityZones.split(",");
        CreateAutoScalingGroupRequest groupRequest = CreateAutoScalingGroupRequest.builder()
                .launchTemplate(specification)
                .availabilityZones(zones)
                .maxSize(groupSize)
                .minSize(groupSize)
                .autoScalingGroupName(autoScalingGroupName)
                .build();

        try {
            getAutoScalingClient().createAutoScalingGroup(groupRequest);

        } catch (AutoScalingException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
        System.out.println("Created an EC2 Auto Scaling group named " + autoScalingGroupName);
        return zones;
    }

    public String getDefaultVPC() {
        // Define the filter.
        Filter defaultFilter = Filter.builder()
                .name("is-default")
                .values("true")
                .build();

        software.amazon.awssdk.services.ec2.model.DescribeVpcsRequest request = software.amazon.awssdk.services.ec2.model.DescribeVpcsRequest
                .builder()
                .filters(defaultFilter)
                .build();

        DescribeVpcsResponse response = getEc2Client().describeVpcs(request);
        return response.vpcs().get(0).vpcId();
    }

    // Gets the default subnets in a VPC for a specified list of Availability Zones.
    public List<Subnet> getSubnets(String vpcId, String[] availabilityZones) {
        List<Subnet> subnets = null;
        Filter vpcFilter = Filter.builder()
                .name("vpc-id")
                .values(vpcId)
                .build();

        Filter azFilter = Filter.builder()
                .name("availability-zone")
                .values(availabilityZones)
                .build();

        Filter defaultForAZ = Filter.builder()
                .name("default-for-az")
                .values("true")
                .build();

        DescribeSubnetsRequest request = DescribeSubnetsRequest.builder()
                .filters(vpcFilter, azFilter, defaultForAZ)
                .build();

        DescribeSubnetsResponse response = getEc2Client().describeSubnets(request);
        subnets = response.subnets();
        return subnets;
    }

    // Gets data about the instances in the EC2 Auto Scaling group.
    public String getBadInstance(String groupName) {
        DescribeAutoScalingGroupsRequest request = DescribeAutoScalingGroupsRequest.builder()
                .autoScalingGroupNames(groupName)
                .build();

        DescribeAutoScalingGroupsResponse response = getAutoScalingClient().describeAutoScalingGroups(request);
        AutoScalingGroup autoScalingGroup = response.autoScalingGroups().get(0);
        List<String> instanceIds = autoScalingGroup.instances().stream()
                .map(instance -> instance.instanceId())
                .collect(Collectors.toList());

        String[] instanceIdArray = instanceIds.toArray(new String[0]);
        for (String instanceId : instanceIdArray) {
            System.out.println("Instance ID: " + instanceId);
            return instanceId;
        }
        return "";
    }

    // Gets data about the profile associated with an instance.
    public String getInstanceProfile(String instanceId) {
        Filter filter = Filter.builder()
                .name("instance-id")
                .values(instanceId)
                .build();

        DescribeIamInstanceProfileAssociationsRequest associationsRequest = DescribeIamInstanceProfileAssociationsRequest
                .builder()
                .filters(filter)
                .build();

        DescribeIamInstanceProfileAssociationsResponse response = getEc2Client()
                .describeIamInstanceProfileAssociations(associationsRequest);
        return response.iamInstanceProfileAssociations().get(0).associationId();
    }

    public void deleteRolesPolicies(String policyName, String roleName, String InstanceProfile) {
        ListPoliciesRequest listPoliciesRequest = ListPoliciesRequest.builder().build();
        ListPoliciesResponse listPoliciesResponse = getIAMClient().listPolicies(listPoliciesRequest);
        for (Policy policy : listPoliciesResponse.policies()) {
            if (policy.policyName().equals(policyName)) {
                // List the entities (users, groups, roles) that are attached to the policy.
                software.amazon.awssdk.services.iam.model.ListEntitiesForPolicyRequest listEntitiesRequest = software.amazon.awssdk.services.iam.model.ListEntitiesForPolicyRequest
                        .builder()
                        .policyArn(policy.arn())
                        .build();
                ListEntitiesForPolicyResponse listEntitiesResponse = iamClient
                        .listEntitiesForPolicy(listEntitiesRequest);
                if (!listEntitiesResponse.policyGroups().isEmpty() || !listEntitiesResponse.policyUsers().isEmpty()
                        || !listEntitiesResponse.policyRoles().isEmpty()) {
                    // Detach the policy from any entities it is attached to.
                    DetachRolePolicyRequest detachPolicyRequest = DetachRolePolicyRequest.builder()
                            .policyArn(policy.arn())
                            .roleName(roleName) // Specify the name of the IAM role
                            .build();

                    getIAMClient().detachRolePolicy(detachPolicyRequest);
                    System.out.println("Policy detached from entities.");
                }

                // Now, you can delete the policy.
                DeletePolicyRequest deletePolicyRequest = DeletePolicyRequest.builder()
                        .policyArn(policy.arn())
                        .build();

                getIAMClient().deletePolicy(deletePolicyRequest);
                System.out.println("Policy deleted successfully.");
                break;
            }
        }

        // List the roles associated with the instance profile
        ListInstanceProfilesForRoleRequest listRolesRequest = ListInstanceProfilesForRoleRequest.builder()
                .roleName(roleName)
                .build();

        // Detach the roles from the instance profile
        ListInstanceProfilesForRoleResponse listRolesResponse = iamClient.listInstanceProfilesForRole(listRolesRequest);
        for (software.amazon.awssdk.services.iam.model.InstanceProfile profile : listRolesResponse.instanceProfiles()) {
            RemoveRoleFromInstanceProfileRequest removeRoleRequest = RemoveRoleFromInstanceProfileRequest.builder()
                    .instanceProfileName(InstanceProfile)
                    .roleName(roleName) // Remove the extra dot here
                    .build();

            getIAMClient().removeRoleFromInstanceProfile(removeRoleRequest);
            System.out.println("Role " + roleName + " removed from instance profile " + InstanceProfile);
        }

        // Delete the instance profile after removing all roles
        DeleteInstanceProfileRequest deleteInstanceProfileRequest = DeleteInstanceProfileRequest.builder()
                .instanceProfileName(InstanceProfile)
                .build();

        getIAMClient().deleteInstanceProfile(r -> r.instanceProfileName(InstanceProfile));
        System.out.println(InstanceProfile + " Deleted");
        System.out.println("All roles and policies are deleted.");
    }
}
```
Crea una classe che racchiuda le operazioni di Elastic Load Balancing.  

```
public class LoadBalancer {
    public ElasticLoadBalancingV2Client elasticLoadBalancingV2Client;

    public ElasticLoadBalancingV2Client getLoadBalancerClient() {
        if (elasticLoadBalancingV2Client == null) {
            elasticLoadBalancingV2Client = ElasticLoadBalancingV2Client.builder()
                    .region(Region.US_EAST_1)
                    .build();
        }

        return elasticLoadBalancingV2Client;
    }

    // Checks the health of the instances in the target group.
    public List<TargetHealthDescription> checkTargetHealth(String targetGroupName) {
        DescribeTargetGroupsRequest targetGroupsRequest = DescribeTargetGroupsRequest.builder()
                .names(targetGroupName)
                .build();

        DescribeTargetGroupsResponse tgResponse = getLoadBalancerClient().describeTargetGroups(targetGroupsRequest);

        DescribeTargetHealthRequest healthRequest = DescribeTargetHealthRequest.builder()
                .targetGroupArn(tgResponse.targetGroups().get(0).targetGroupArn())
                .build();

        DescribeTargetHealthResponse healthResponse = getLoadBalancerClient().describeTargetHealth(healthRequest);
        return healthResponse.targetHealthDescriptions();
    }

    // Gets the HTTP endpoint of the load balancer.
    public String getEndpoint(String lbName) {
        DescribeLoadBalancersResponse res = getLoadBalancerClient()
                .describeLoadBalancers(describe -> describe.names(lbName));
        return res.loadBalancers().get(0).dnsName();
    }

    // Deletes a load balancer.
    public void deleteLoadBalancer(String lbName) {
        try {
            // Use a waiter to delete the Load Balancer.
            DescribeLoadBalancersResponse res = getLoadBalancerClient()
                    .describeLoadBalancers(describe -> describe.names(lbName));
            ElasticLoadBalancingV2Waiter loadBalancerWaiter = getLoadBalancerClient().waiter();
            DescribeLoadBalancersRequest request = DescribeLoadBalancersRequest.builder()
                    .loadBalancerArns(res.loadBalancers().get(0).loadBalancerArn())
                    .build();

            getLoadBalancerClient().deleteLoadBalancer(
                    builder -> builder.loadBalancerArn(res.loadBalancers().get(0).loadBalancerArn()));
            WaiterResponse<DescribeLoadBalancersResponse> waiterResponse = loadBalancerWaiter
                    .waitUntilLoadBalancersDeleted(request);
            waiterResponse.matched().response().ifPresent(System.out::println);

        } catch (ElasticLoadBalancingV2Exception e) {
            System.err.println(e.awsErrorDetails().errorMessage());
        }
        System.out.println(lbName + " was deleted.");
    }

    // Deletes the target group.
    public void deleteTargetGroup(String targetGroupName) {
        try {
            DescribeTargetGroupsResponse res = getLoadBalancerClient()
                    .describeTargetGroups(describe -> describe.names(targetGroupName));
            getLoadBalancerClient()
                    .deleteTargetGroup(builder -> builder.targetGroupArn(res.targetGroups().get(0).targetGroupArn()));
        } catch (ElasticLoadBalancingV2Exception e) {
            System.err.println(e.awsErrorDetails().errorMessage());
        }
        System.out.println(targetGroupName + " was deleted.");
    }

    // Verify this computer can successfully send a GET request to the load balancer
    // endpoint.
    public boolean verifyLoadBalancerEndpoint(String elbDnsName) throws IOException, InterruptedException {
        boolean success = false;
        int retries = 3;
        CloseableHttpClient httpClient = HttpClients.createDefault();

        // Create an HTTP GET request to the ELB.
        HttpGet httpGet = new HttpGet("http://" + elbDnsName);
        try {
            while ((!success) && (retries > 0)) {
                // Execute the request and get the response.
                HttpResponse response = httpClient.execute(httpGet);
                int statusCode = response.getStatusLine().getStatusCode();
                System.out.println("HTTP Status Code: " + statusCode);
                if (statusCode == 200) {
                    success = true;
                } else {
                    retries--;
                    System.out.println("Got connection error from load balancer endpoint, retrying...");
                    TimeUnit.SECONDS.sleep(15);
                }
            }

        } catch (org.apache.http.conn.HttpHostConnectException e) {
            System.out.println(e.getMessage());
        }

        System.out.println("Status.." + success);
        return success;
    }

    /*
     * Creates an Elastic Load Balancing target group. The target group specifies
     * how
     * the load balancer forward requests to instances in the group and how instance
     * health is checked.
     */
    public String createTargetGroup(String protocol, int port, String vpcId, String targetGroupName) {
        CreateTargetGroupRequest targetGroupRequest = CreateTargetGroupRequest.builder()
                .healthCheckPath("/healthcheck")
                .healthCheckTimeoutSeconds(5)
                .port(port)
                .vpcId(vpcId)
                .name(targetGroupName)
                .protocol(protocol)
                .build();

        CreateTargetGroupResponse targetGroupResponse = getLoadBalancerClient().createTargetGroup(targetGroupRequest);
        String targetGroupArn = targetGroupResponse.targetGroups().get(0).targetGroupArn();
        String targetGroup = targetGroupResponse.targetGroups().get(0).targetGroupName();
        System.out.println("The " + targetGroup + " was created with ARN" + targetGroupArn);
        return targetGroupArn;
    }

    /*
     * Creates an Elastic Load Balancing load balancer that uses the specified
     * subnets
     * and forwards requests to the specified target group.
     */
    public String createLoadBalancer(List<Subnet> subnetIds, String targetGroupARN, String lbName, int port,
            String protocol) {
        try {
            List<String> subnetIdStrings = subnetIds.stream()
                    .map(Subnet::subnetId)
                    .collect(Collectors.toList());

            CreateLoadBalancerRequest balancerRequest = CreateLoadBalancerRequest.builder()
                    .subnets(subnetIdStrings)
                    .name(lbName)
                    .scheme("internet-facing")
                    .build();

            // Create and wait for the load balancer to become available.
            CreateLoadBalancerResponse lsResponse = getLoadBalancerClient().createLoadBalancer(balancerRequest);
            String lbARN = lsResponse.loadBalancers().get(0).loadBalancerArn();

            ElasticLoadBalancingV2Waiter loadBalancerWaiter = getLoadBalancerClient().waiter();
            DescribeLoadBalancersRequest request = DescribeLoadBalancersRequest.builder()
                    .loadBalancerArns(lbARN)
                    .build();

            System.out.println("Waiting for Load Balancer " + lbName + " to become available.");
            WaiterResponse<DescribeLoadBalancersResponse> waiterResponse = loadBalancerWaiter
                    .waitUntilLoadBalancerAvailable(request);
            waiterResponse.matched().response().ifPresent(System.out::println);
            System.out.println("Load Balancer " + lbName + " is available.");

            // Get the DNS name (endpoint) of the load balancer.
            String lbDNSName = lsResponse.loadBalancers().get(0).dnsName();
            System.out.println("*** Load Balancer DNS Name: " + lbDNSName);

            // Create a listener for the load balance.
            Action action = Action.builder()
                    .targetGroupArn(targetGroupARN)
                    .type("forward")
                    .build();

            CreateListenerRequest listenerRequest = CreateListenerRequest.builder()
                    .loadBalancerArn(lsResponse.loadBalancers().get(0).loadBalancerArn())
                    .defaultActions(action)
                    .port(port)
                    .protocol(protocol)
                    .build();

            getLoadBalancerClient().createListener(listenerRequest);
            System.out.println("Created listener to forward traffic from load balancer " + lbName + " to target group "
                    + targetGroupARN);

            // Return the load balancer DNS name.
            return lbDNSName;

        } catch (ElasticLoadBalancingV2Exception e) {
            e.printStackTrace();
        }
        return "";
    }
}
```
Crea una classe che utilizzi DynamoDB per simulare un servizio di raccomandazione.  

```
public class Database {

    private static DynamoDbClient dynamoDbClient;

    public static DynamoDbClient getDynamoDbClient() {
        if (dynamoDbClient == null) {
            dynamoDbClient = DynamoDbClient.builder()
                    .region(Region.US_EAST_1)
                    .build();
        }
        return dynamoDbClient;
    }

    // Checks to see if the Amazon DynamoDB table exists.
    private boolean doesTableExist(String tableName) {
        try {
            // Describe the table and catch any exceptions.
            DescribeTableRequest describeTableRequest = DescribeTableRequest.builder()
                    .tableName(tableName)
                    .build();

            getDynamoDbClient().describeTable(describeTableRequest);
            System.out.println("Table '" + tableName + "' exists.");
            return true;

        } catch (ResourceNotFoundException e) {
            System.out.println("Table '" + tableName + "' does not exist.");
        } catch (DynamoDbException e) {
            System.err.println("Error checking table existence: " + e.getMessage());
        }
        return false;
    }

    /*
     * Creates a DynamoDB table to use a recommendation service. The table has a
     * hash key named 'MediaType' that defines the type of media recommended, such
     * as
     * Book or Movie, and a range key named 'ItemId' that, combined with the
     * MediaType,
     * forms a unique identifier for the recommended item.
     */
    public void createTable(String tableName, String fileName) throws IOException {
        // First check to see if the table exists.
        boolean doesExist = doesTableExist(tableName);
        if (!doesExist) {
            DynamoDbWaiter dbWaiter = getDynamoDbClient().waiter();
            CreateTableRequest createTableRequest = CreateTableRequest.builder()
                    .tableName(tableName)
                    .attributeDefinitions(
                            AttributeDefinition.builder()
                                    .attributeName("MediaType")
                                    .attributeType(ScalarAttributeType.S)
                                    .build(),
                            AttributeDefinition.builder()
                                    .attributeName("ItemId")
                                    .attributeType(ScalarAttributeType.N)
                                    .build())
                    .keySchema(
                            KeySchemaElement.builder()
                                    .attributeName("MediaType")
                                    .keyType(KeyType.HASH)
                                    .build(),
                            KeySchemaElement.builder()
                                    .attributeName("ItemId")
                                    .keyType(KeyType.RANGE)
                                    .build())
                    .provisionedThroughput(
                            ProvisionedThroughput.builder()
                                    .readCapacityUnits(5L)
                                    .writeCapacityUnits(5L)
                                    .build())
                    .build();

            getDynamoDbClient().createTable(createTableRequest);
            System.out.println("Creating table " + tableName + "...");

            // Wait until the Amazon DynamoDB table is created.
            DescribeTableRequest tableRequest = DescribeTableRequest.builder()
                    .tableName(tableName)
                    .build();

            WaiterResponse<DescribeTableResponse> waiterResponse = dbWaiter.waitUntilTableExists(tableRequest);
            waiterResponse.matched().response().ifPresent(System.out::println);
            System.out.println("Table " + tableName + " created.");

            // Add records to the table.
            populateTable(fileName, tableName);
        }
    }

    public void deleteTable(String tableName) {
        getDynamoDbClient().deleteTable(table -> table.tableName(tableName));
        System.out.println("Table " + tableName + " deleted.");
    }

    // Populates the table with data located in a JSON file using the DynamoDB
    // enhanced client.
    public void populateTable(String fileName, String tableName) throws IOException {
        DynamoDbEnhancedClient enhancedClient = DynamoDbEnhancedClient.builder()
                .dynamoDbClient(getDynamoDbClient())
                .build();
        ObjectMapper objectMapper = new ObjectMapper();
        File jsonFile = new File(fileName);
        JsonNode rootNode = objectMapper.readTree(jsonFile);

        DynamoDbTable<Recommendation> mappedTable = enhancedClient.table(tableName,
                TableSchema.fromBean(Recommendation.class));
        for (JsonNode currentNode : rootNode) {
            String mediaType = currentNode.path("MediaType").path("S").asText();
            int itemId = currentNode.path("ItemId").path("N").asInt();
            String title = currentNode.path("Title").path("S").asText();
            String creator = currentNode.path("Creator").path("S").asText();

            // Create a Recommendation object and set its properties.
            Recommendation rec = new Recommendation();
            rec.setMediaType(mediaType);
            rec.setItemId(itemId);
            rec.setTitle(title);
            rec.setCreator(creator);

            // Put the item into the DynamoDB table.
            mappedTable.putItem(rec); // Add the Recommendation to the list.
        }
        System.out.println("Added all records to the " + tableName);
    }
}
```
Crea una classe che racchiuda le operazioni di Systems Manager.  

```
public class ParameterHelper {

    String tableName = "doc-example-resilient-architecture-table";
    String dyntable = "doc-example-recommendation-service";
    String failureResponse = "doc-example-resilient-architecture-failure-response";
    String healthCheck = "doc-example-resilient-architecture-health-check";

    public void reset() {
        put(dyntable, tableName);
        put(failureResponse, "none");
        put(healthCheck, "shallow");
    }

    public void put(String name, String value) {
        SsmClient ssmClient = SsmClient.builder()
                .region(Region.US_EAST_1)
                .build();

        PutParameterRequest parameterRequest = PutParameterRequest.builder()
                .name(name)
                .value(value)
                .overwrite(true)
                .type("String")
                .build();

        ssmClient.putParameter(parameterRequest);
        System.out.printf("Setting demo parameter %s to '%s'.", name, value);
    }
}
```
+ Per informazioni dettagliate sull’API, consulta i seguenti argomenti nella *documentazione di riferimento dell’API AWS SDK for Java 2.x *.
  + [AttachLoadBalancerTargetGroups](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/AttachLoadBalancerTargetGroups)
  + [CreateAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/CreateAutoScalingGroup)
  + [CreateInstanceProfile](https://docs.aws.amazon.com/goto/SdkForJavaV2/iam-2010-05-08/CreateInstanceProfile)
  + [CreateLaunchTemplate](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/CreateLaunchTemplate)
  + [CreateListener](https://docs.aws.amazon.com/goto/SdkForJavaV2/elasticloadbalancingv2-2015-12-01/CreateListener)
  + [CreateLoadBalancer](https://docs.aws.amazon.com/goto/SdkForJavaV2/elasticloadbalancingv2-2015-12-01/CreateLoadBalancer)
  + [CreateTargetGroup](https://docs.aws.amazon.com/goto/SdkForJavaV2/elasticloadbalancingv2-2015-12-01/CreateTargetGroup)
  + [DeleteAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/DeleteAutoScalingGroup)
  + [DeleteInstanceProfile](https://docs.aws.amazon.com/goto/SdkForJavaV2/iam-2010-05-08/DeleteInstanceProfile)
  + [DeleteLaunchTemplate](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/DeleteLaunchTemplate)
  + [DeleteLoadBalancer](https://docs.aws.amazon.com/goto/SdkForJavaV2/elasticloadbalancingv2-2015-12-01/DeleteLoadBalancer)
  + [DeleteTargetGroup](https://docs.aws.amazon.com/goto/SdkForJavaV2/elasticloadbalancingv2-2015-12-01/DeleteTargetGroup)
  + [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/DescribeAutoScalingGroups)
  + [DescribeAvailabilityZones](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/DescribeAvailabilityZones)
  + [DescribeIamInstanceProfileAssociations](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/DescribeIamInstanceProfileAssociations)
  + [DescribeInstances](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/DescribeInstances)
  + [DescribeLoadBalancers](https://docs.aws.amazon.com/goto/SdkForJavaV2/elasticloadbalancingv2-2015-12-01/DescribeLoadBalancers)
  + [DescribeSubnets](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/DescribeSubnets)
  + [DescribeTargetGroups](https://docs.aws.amazon.com/goto/SdkForJavaV2/elasticloadbalancingv2-2015-12-01/DescribeTargetGroups)
  + [DescribeTargetHealth](https://docs.aws.amazon.com/goto/SdkForJavaV2/elasticloadbalancingv2-2015-12-01/DescribeTargetHealth)
  + [DescribeVpcs](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/DescribeVpcs)
  + [RebootInstances](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/RebootInstances)
  + [ReplaceIamInstanceProfileAssociation](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/ReplaceIamInstanceProfileAssociation)
  + [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/TerminateInstanceInAutoScalingGroup)
  + [UpdateAutoScalingGroup](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/UpdateAutoScalingGroup)

------
#### [ JavaScript ]

**SDK per JavaScript (v3)**  
 C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javascriptv3/example_code/cross-services/wkflw-resilient-service#code-examples). 
Esegui lo scenario interattivo al prompt dei comandi.  

```
#!/usr/bin/env node
// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

import {
  Scenario,
  parseScenarioArgs,
} from "@aws-doc-sdk-examples/lib/scenario/index.js";

/**
 * The workflow steps are split into three stages:
 *   - deploy
 *   - demo
 *   - destroy
 *
 * Each of these stages has a corresponding file prefixed with steps-*.
 */
import { deploySteps } from "./steps-deploy.js";
import { demoSteps } from "./steps-demo.js";
import { destroySteps } from "./steps-destroy.js";

/**
 * The context is passed to every scenario. Scenario steps
 * will modify the context.
 */
const context = {};

/**
 * Three Scenarios are created for the workflow. A Scenario is an orchestration class
 * that simplifies running a series of steps.
 */
export const scenarios = {
  // Deploys all resources necessary for the workflow.
  deploy: new Scenario("Resilient Workflow - Deploy", deploySteps, context),
  // Demonstrates how a fragile web service can be made more resilient.
  demo: new Scenario("Resilient Workflow - Demo", demoSteps, context),
  // Destroys the resources created for the workflow.
  destroy: new Scenario("Resilient Workflow - Destroy", destroySteps, context),
};

// Call function if run directly
import { fileURLToPath } from "node:url";

if (process.argv[1] === fileURLToPath(import.meta.url)) {
  parseScenarioArgs(scenarios, {
    name: "Resilient Workflow",
    synopsis:
      "node index.js --scenario <deploy | demo | destroy> [-h|--help] [-y|--yes] [-v|--verbose]",
    description: "Deploy and interact with scalable EC2 instances.",
  });
}
```
Crea passaggi per distribuire tutte le risorse.  

```
import { join } from "node:path";
import { readFileSync, writeFileSync } from "node:fs";
import axios from "axios";

import {
  BatchWriteItemCommand,
  CreateTableCommand,
  DynamoDBClient,
  waitUntilTableExists,
} from "@aws-sdk/client-dynamodb";
import {
  EC2Client,
  CreateKeyPairCommand,
  CreateLaunchTemplateCommand,
  DescribeAvailabilityZonesCommand,
  DescribeVpcsCommand,
  DescribeSubnetsCommand,
  DescribeSecurityGroupsCommand,
  AuthorizeSecurityGroupIngressCommand,
} from "@aws-sdk/client-ec2";
import {
  IAMClient,
  CreatePolicyCommand,
  CreateRoleCommand,
  CreateInstanceProfileCommand,
  AddRoleToInstanceProfileCommand,
  AttachRolePolicyCommand,
  waitUntilInstanceProfileExists,
} from "@aws-sdk/client-iam";
import { SSMClient, GetParameterCommand } from "@aws-sdk/client-ssm";
import {
  CreateAutoScalingGroupCommand,
  AutoScalingClient,
  AttachLoadBalancerTargetGroupsCommand,
} from "@aws-sdk/client-auto-scaling";
import {
  CreateListenerCommand,
  CreateLoadBalancerCommand,
  CreateTargetGroupCommand,
  ElasticLoadBalancingV2Client,
  waitUntilLoadBalancerAvailable,
} from "@aws-sdk/client-elastic-load-balancing-v2";

import {
  ScenarioOutput,
  ScenarioInput,
  ScenarioAction,
} from "@aws-doc-sdk-examples/lib/scenario/index.js";
import { saveState } from "@aws-doc-sdk-examples/lib/scenario/steps-common.js";
import { retry } from "@aws-doc-sdk-examples/lib/utils/util-timers.js";

import { MESSAGES, NAMES, RESOURCES_PATH, ROOT } from "./constants.js";
import { initParamsSteps } from "./steps-reset-params.js";

/**
 * @type {import('@aws-doc-sdk-examples/lib/scenario.js').Step[]}
 */
export const deploySteps = [
  new ScenarioOutput("introduction", MESSAGES.introduction, { header: true }),
  new ScenarioInput("confirmDeployment", MESSAGES.confirmDeployment, {
    type: "confirm",
  }),
  new ScenarioAction(
    "handleConfirmDeployment",
    (c) => c.confirmDeployment === false && process.exit(),
  ),
  new ScenarioOutput(
    "creatingTable",
    MESSAGES.creatingTable.replace("${TABLE_NAME}", NAMES.tableName),
  ),
  new ScenarioAction("createTable", async () => {
    const client = new DynamoDBClient({});
    await client.send(
      new CreateTableCommand({
        TableName: NAMES.tableName,
        ProvisionedThroughput: {
          ReadCapacityUnits: 5,
          WriteCapacityUnits: 5,
        },
        AttributeDefinitions: [
          {
            AttributeName: "MediaType",
            AttributeType: "S",
          },
          {
            AttributeName: "ItemId",
            AttributeType: "N",
          },
        ],
        KeySchema: [
          {
            AttributeName: "MediaType",
            KeyType: "HASH",
          },
          {
            AttributeName: "ItemId",
            KeyType: "RANGE",
          },
        ],
      }),
    );
    await waitUntilTableExists({ client }, { TableName: NAMES.tableName });
  }),
  new ScenarioOutput(
    "createdTable",
    MESSAGES.createdTable.replace("${TABLE_NAME}", NAMES.tableName),
  ),
  new ScenarioOutput(
    "populatingTable",
    MESSAGES.populatingTable.replace("${TABLE_NAME}", NAMES.tableName),
  ),
  new ScenarioAction("populateTable", () => {
    const client = new DynamoDBClient({});
    /**
     * @type {{ default: import("@aws-sdk/client-dynamodb").PutRequest['Item'][] }}
     */
    const recommendations = JSON.parse(
      readFileSync(join(RESOURCES_PATH, "recommendations.json")),
    );

    return client.send(
      new BatchWriteItemCommand({
        RequestItems: {
          [NAMES.tableName]: recommendations.map((item) => ({
            PutRequest: { Item: item },
          })),
        },
      }),
    );
  }),
  new ScenarioOutput(
    "populatedTable",
    MESSAGES.populatedTable.replace("${TABLE_NAME}", NAMES.tableName),
  ),
  new ScenarioOutput(
    "creatingKeyPair",
    MESSAGES.creatingKeyPair.replace("${KEY_PAIR_NAME}", NAMES.keyPairName),
  ),
  new ScenarioAction("createKeyPair", async () => {
    const client = new EC2Client({});
    const { KeyMaterial } = await client.send(
      new CreateKeyPairCommand({
        KeyName: NAMES.keyPairName,
      }),
    );

    writeFileSync(`${NAMES.keyPairName}.pem`, KeyMaterial, { mode: 0o600 });
  }),
  new ScenarioOutput(
    "createdKeyPair",
    MESSAGES.createdKeyPair.replace("${KEY_PAIR_NAME}", NAMES.keyPairName),
  ),
  new ScenarioOutput(
    "creatingInstancePolicy",
    MESSAGES.creatingInstancePolicy.replace(
      "${INSTANCE_POLICY_NAME}",
      NAMES.instancePolicyName,
    ),
  ),
  new ScenarioAction("createInstancePolicy", async (state) => {
    const client = new IAMClient({});
    const {
      Policy: { Arn },
    } = await client.send(
      new CreatePolicyCommand({
        PolicyName: NAMES.instancePolicyName,
        PolicyDocument: readFileSync(
          join(RESOURCES_PATH, "instance_policy.json"),
        ),
      }),
    );
    state.instancePolicyArn = Arn;
  }),
  new ScenarioOutput("createdInstancePolicy", (state) =>
    MESSAGES.createdInstancePolicy
      .replace("${INSTANCE_POLICY_NAME}", NAMES.instancePolicyName)
      .replace("${INSTANCE_POLICY_ARN}", state.instancePolicyArn),
  ),
  new ScenarioOutput(
    "creatingInstanceRole",
    MESSAGES.creatingInstanceRole.replace(
      "${INSTANCE_ROLE_NAME}",
      NAMES.instanceRoleName,
    ),
  ),
  new ScenarioAction("createInstanceRole", () => {
    const client = new IAMClient({});
    return client.send(
      new CreateRoleCommand({
        RoleName: NAMES.instanceRoleName,
        AssumeRolePolicyDocument: readFileSync(
          join(ROOT, "assume-role-policy.json"),
        ),
      }),
    );
  }),
  new ScenarioOutput(
    "createdInstanceRole",
    MESSAGES.createdInstanceRole.replace(
      "${INSTANCE_ROLE_NAME}",
      NAMES.instanceRoleName,
    ),
  ),
  new ScenarioOutput(
    "attachingPolicyToRole",
    MESSAGES.attachingPolicyToRole
      .replace("${INSTANCE_ROLE_NAME}", NAMES.instanceRoleName)
      .replace("${INSTANCE_POLICY_NAME}", NAMES.instancePolicyName),
  ),
  new ScenarioAction("attachPolicyToRole", async (state) => {
    const client = new IAMClient({});
    await client.send(
      new AttachRolePolicyCommand({
        RoleName: NAMES.instanceRoleName,
        PolicyArn: state.instancePolicyArn,
      }),
    );
  }),
  new ScenarioOutput(
    "attachedPolicyToRole",
    MESSAGES.attachedPolicyToRole
      .replace("${INSTANCE_POLICY_NAME}", NAMES.instancePolicyName)
      .replace("${INSTANCE_ROLE_NAME}", NAMES.instanceRoleName),
  ),
  new ScenarioOutput(
    "creatingInstanceProfile",
    MESSAGES.creatingInstanceProfile.replace(
      "${INSTANCE_PROFILE_NAME}",
      NAMES.instanceProfileName,
    ),
  ),
  new ScenarioAction("createInstanceProfile", async (state) => {
    const client = new IAMClient({});
    const {
      InstanceProfile: { Arn },
    } = await client.send(
      new CreateInstanceProfileCommand({
        InstanceProfileName: NAMES.instanceProfileName,
      }),
    );
    state.instanceProfileArn = Arn;

    await waitUntilInstanceProfileExists(
      { client },
      { InstanceProfileName: NAMES.instanceProfileName },
    );
  }),
  new ScenarioOutput("createdInstanceProfile", (state) =>
    MESSAGES.createdInstanceProfile
      .replace("${INSTANCE_PROFILE_NAME}", NAMES.instanceProfileName)
      .replace("${INSTANCE_PROFILE_ARN}", state.instanceProfileArn),
  ),
  new ScenarioOutput(
    "addingRoleToInstanceProfile",
    MESSAGES.addingRoleToInstanceProfile
      .replace("${INSTANCE_PROFILE_NAME}", NAMES.instanceProfileName)
      .replace("${INSTANCE_ROLE_NAME}", NAMES.instanceRoleName),
  ),
  new ScenarioAction("addRoleToInstanceProfile", () => {
    const client = new IAMClient({});
    return client.send(
      new AddRoleToInstanceProfileCommand({
        RoleName: NAMES.instanceRoleName,
        InstanceProfileName: NAMES.instanceProfileName,
      }),
    );
  }),
  new ScenarioOutput(
    "addedRoleToInstanceProfile",
    MESSAGES.addedRoleToInstanceProfile
      .replace("${INSTANCE_PROFILE_NAME}", NAMES.instanceProfileName)
      .replace("${INSTANCE_ROLE_NAME}", NAMES.instanceRoleName),
  ),
  ...initParamsSteps,
  new ScenarioOutput("creatingLaunchTemplate", MESSAGES.creatingLaunchTemplate),
  new ScenarioAction("createLaunchTemplate", async () => {
    const ssmClient = new SSMClient({});
    const { Parameter } = await ssmClient.send(
      new GetParameterCommand({
        Name: "/aws/service/ami-amazon-linux-latest/amzn2-ami-hvm-x86_64-gp2",
      }),
    );
    const ec2Client = new EC2Client({});
    await ec2Client.send(
      new CreateLaunchTemplateCommand({
        LaunchTemplateName: NAMES.launchTemplateName,
        LaunchTemplateData: {
          InstanceType: "t3.micro",
          ImageId: Parameter.Value,
          IamInstanceProfile: { Name: NAMES.instanceProfileName },
          UserData: readFileSync(
            join(RESOURCES_PATH, "server_startup_script.sh"),
          ).toString("base64"),
          KeyName: NAMES.keyPairName,
        },
      }),
    );
  }),
  new ScenarioOutput(
    "createdLaunchTemplate",
    MESSAGES.createdLaunchTemplate.replace(
      "${LAUNCH_TEMPLATE_NAME}",
      NAMES.launchTemplateName,
    ),
  ),
  new ScenarioOutput(
    "creatingAutoScalingGroup",
    MESSAGES.creatingAutoScalingGroup.replace(
      "${AUTO_SCALING_GROUP_NAME}",
      NAMES.autoScalingGroupName,
    ),
  ),
  new ScenarioAction("createAutoScalingGroup", async (state) => {
    const ec2Client = new EC2Client({});
    const { AvailabilityZones } = await ec2Client.send(
      new DescribeAvailabilityZonesCommand({}),
    );
    state.availabilityZoneNames = AvailabilityZones.map((az) => az.ZoneName);
    const autoScalingClient = new AutoScalingClient({});
    await retry({ intervalInMs: 1000, maxRetries: 30 }, () =>
      autoScalingClient.send(
        new CreateAutoScalingGroupCommand({
          AvailabilityZones: state.availabilityZoneNames,
          AutoScalingGroupName: NAMES.autoScalingGroupName,
          LaunchTemplate: {
            LaunchTemplateName: NAMES.launchTemplateName,
            Version: "$Default",
          },
          MinSize: 3,
          MaxSize: 3,
        }),
      ),
    );
  }),
  new ScenarioOutput(
    "createdAutoScalingGroup",
    /**
     * @param {{ availabilityZoneNames: string[] }} state
     */
    (state) =>
      MESSAGES.createdAutoScalingGroup
        .replace("${AUTO_SCALING_GROUP_NAME}", NAMES.autoScalingGroupName)
        .replace(
          "${AVAILABILITY_ZONE_NAMES}",
          state.availabilityZoneNames.join(", "),
        ),
  ),
  new ScenarioInput("confirmContinue", MESSAGES.confirmContinue, {
    type: "confirm",
  }),
  new ScenarioOutput("loadBalancer", MESSAGES.loadBalancer),
  new ScenarioOutput("gettingVpc", MESSAGES.gettingVpc),
  new ScenarioAction("getVpc", async (state) => {
    const client = new EC2Client({});
    const { Vpcs } = await client.send(
      new DescribeVpcsCommand({
        Filters: [{ Name: "is-default", Values: ["true"] }],
      }),
    );
    state.defaultVpc = Vpcs[0].VpcId;
  }),
  new ScenarioOutput("gotVpc", (state) =>
    MESSAGES.gotVpc.replace("${VPC_ID}", state.defaultVpc),
  ),
  new ScenarioOutput("gettingSubnets", MESSAGES.gettingSubnets),
  new ScenarioAction("getSubnets", async (state) => {
    const client = new EC2Client({});
    const { Subnets } = await client.send(
      new DescribeSubnetsCommand({
        Filters: [
          { Name: "vpc-id", Values: [state.defaultVpc] },
          { Name: "availability-zone", Values: state.availabilityZoneNames },
          { Name: "default-for-az", Values: ["true"] },
        ],
      }),
    );
    state.subnets = Subnets.map((subnet) => subnet.SubnetId);
  }),
  new ScenarioOutput(
    "gotSubnets",
    /**
     * @param {{ subnets: string[] }} state
     */
    (state) =>
      MESSAGES.gotSubnets.replace("${SUBNETS}", state.subnets.join(", ")),
  ),
  new ScenarioOutput(
    "creatingLoadBalancerTargetGroup",
    MESSAGES.creatingLoadBalancerTargetGroup.replace(
      "${TARGET_GROUP_NAME}",
      NAMES.loadBalancerTargetGroupName,
    ),
  ),
  new ScenarioAction("createLoadBalancerTargetGroup", async (state) => {
    const client = new ElasticLoadBalancingV2Client({});
    const { TargetGroups } = await client.send(
      new CreateTargetGroupCommand({
        Name: NAMES.loadBalancerTargetGroupName,
        Protocol: "HTTP",
        Port: 80,
        HealthCheckPath: "/healthcheck",
        HealthCheckIntervalSeconds: 10,
        HealthCheckTimeoutSeconds: 5,
        HealthyThresholdCount: 2,
        UnhealthyThresholdCount: 2,
        VpcId: state.defaultVpc,
      }),
    );
    const targetGroup = TargetGroups[0];
    state.targetGroupArn = targetGroup.TargetGroupArn;
    state.targetGroupProtocol = targetGroup.Protocol;
    state.targetGroupPort = targetGroup.Port;
  }),
  new ScenarioOutput(
    "createdLoadBalancerTargetGroup",
    MESSAGES.createdLoadBalancerTargetGroup.replace(
      "${TARGET_GROUP_NAME}",
      NAMES.loadBalancerTargetGroupName,
    ),
  ),
  new ScenarioOutput(
    "creatingLoadBalancer",
    MESSAGES.creatingLoadBalancer.replace("${LB_NAME}", NAMES.loadBalancerName),
  ),
  new ScenarioAction("createLoadBalancer", async (state) => {
    const client = new ElasticLoadBalancingV2Client({});
    const { LoadBalancers } = await client.send(
      new CreateLoadBalancerCommand({
        Name: NAMES.loadBalancerName,
        Subnets: state.subnets,
      }),
    );
    state.loadBalancerDns = LoadBalancers[0].DNSName;
    state.loadBalancerArn = LoadBalancers[0].LoadBalancerArn;
    await waitUntilLoadBalancerAvailable(
      { client },
      { Names: [NAMES.loadBalancerName] },
    );
  }),
  new ScenarioOutput("createdLoadBalancer", (state) =>
    MESSAGES.createdLoadBalancer
      .replace("${LB_NAME}", NAMES.loadBalancerName)
      .replace("${DNS_NAME}", state.loadBalancerDns),
  ),
  new ScenarioOutput(
    "creatingListener",
    MESSAGES.creatingLoadBalancerListener
      .replace("${LB_NAME}", NAMES.loadBalancerName)
      .replace("${TARGET_GROUP_NAME}", NAMES.loadBalancerTargetGroupName),
  ),
  new ScenarioAction("createListener", async (state) => {
    const client = new ElasticLoadBalancingV2Client({});
    const { Listeners } = await client.send(
      new CreateListenerCommand({
        LoadBalancerArn: state.loadBalancerArn,
        Protocol: state.targetGroupProtocol,
        Port: state.targetGroupPort,
        DefaultActions: [
          { Type: "forward", TargetGroupArn: state.targetGroupArn },
        ],
      }),
    );
    const listener = Listeners[0];
    state.loadBalancerListenerArn = listener.ListenerArn;
  }),
  new ScenarioOutput("createdListener", (state) =>
    MESSAGES.createdLoadBalancerListener.replace(
      "${LB_LISTENER_ARN}",
      state.loadBalancerListenerArn,
    ),
  ),
  new ScenarioOutput(
    "attachingLoadBalancerTargetGroup",
    MESSAGES.attachingLoadBalancerTargetGroup
      .replace("${TARGET_GROUP_NAME}", NAMES.loadBalancerTargetGroupName)
      .replace("${AUTO_SCALING_GROUP_NAME}", NAMES.autoScalingGroupName),
  ),
  new ScenarioAction("attachLoadBalancerTargetGroup", async (state) => {
    const client = new AutoScalingClient({});
    await client.send(
      new AttachLoadBalancerTargetGroupsCommand({
        AutoScalingGroupName: NAMES.autoScalingGroupName,
        TargetGroupARNs: [state.targetGroupArn],
      }),
    );
  }),
  new ScenarioOutput(
    "attachedLoadBalancerTargetGroup",
    MESSAGES.attachedLoadBalancerTargetGroup,
  ),
  new ScenarioOutput("verifyingInboundPort", MESSAGES.verifyingInboundPort),
  new ScenarioAction(
    "verifyInboundPort",
    /**
     *
     * @param {{ defaultSecurityGroup: import('@aws-sdk/client-ec2').SecurityGroup}} state
     */
    async (state) => {
      const client = new EC2Client({});
      const { SecurityGroups } = await client.send(
        new DescribeSecurityGroupsCommand({
          Filters: [{ Name: "group-name", Values: ["default"] }],
        }),
      );
      if (!SecurityGroups) {
        state.verifyInboundPortError = new Error(MESSAGES.noSecurityGroups);
      }
      state.defaultSecurityGroup = SecurityGroups[0];

      /**
       * @type {string}
       */
      const ipResponse = (await axios.get("http://checkip.amazonaws.com")).data;
      state.myIp = ipResponse.trim();
      const myIpRules = state.defaultSecurityGroup.IpPermissions.filter(
        ({ IpRanges }) =>
          IpRanges.some(
            ({ CidrIp }) =>
              CidrIp.startsWith(state.myIp) || CidrIp === "0.0.0.0/0",
          ),
      )
        .filter(({ IpProtocol }) => IpProtocol === "tcp")
        .filter(({ FromPort }) => FromPort === 80);

      state.myIpRules = myIpRules;
    },
  ),
  new ScenarioOutput(
    "verifiedInboundPort",
    /**
     * @param {{ myIpRules: any[] }} state
     */
    (state) => {
      if (state.myIpRules.length > 0) {
        return MESSAGES.foundIpRules.replace(
          "${IP_RULES}",
          JSON.stringify(state.myIpRules, null, 2),
        );
      }
      return MESSAGES.noIpRules;
    },
  ),
  new ScenarioInput(
    "shouldAddInboundRule",
    /**
     * @param {{ myIpRules: any[] }} state
     */
    (state) => {
      if (state.myIpRules.length > 0) {
        return false;
      }
      return MESSAGES.noIpRules;
    },
    { type: "confirm" },
  ),
  new ScenarioAction(
    "addInboundRule",
    /**
     * @param {{ defaultSecurityGroup: import('@aws-sdk/client-ec2').SecurityGroup }} state
     */
    async (state) => {
      if (!state.shouldAddInboundRule) {
        return;
      }

      const client = new EC2Client({});
      await client.send(
        new AuthorizeSecurityGroupIngressCommand({
          GroupId: state.defaultSecurityGroup.GroupId,
          CidrIp: `${state.myIp}/32`,
          FromPort: 80,
          ToPort: 80,
          IpProtocol: "tcp",
        }),
      );
    },
  ),
  new ScenarioOutput("addedInboundRule", (state) => {
    if (state.shouldAddInboundRule) {
      return MESSAGES.addedInboundRule.replace("${IP_ADDRESS}", state.myIp);
    }
    return false;
  }),
  new ScenarioOutput("verifyingEndpoint", (state) =>
    MESSAGES.verifyingEndpoint.replace("${DNS_NAME}", state.loadBalancerDns),
  ),
  new ScenarioAction("verifyEndpoint", async (state) => {
    try {
      const response = await retry({ intervalInMs: 2000, maxRetries: 30 }, () =>
        axios.get(`http://${state.loadBalancerDns}`),
      );
      state.endpointResponse = JSON.stringify(response.data, null, 2);
    } catch (e) {
      state.verifyEndpointError = e;
    }
  }),
  new ScenarioOutput("verifiedEndpoint", (state) => {
    if (state.verifyEndpointError) {
      console.error(state.verifyEndpointError);
    } else {
      return MESSAGES.verifiedEndpoint.replace(
        "${ENDPOINT_RESPONSE}",
        state.endpointResponse,
      );
    }
  }),
  saveState,
];
```
Crea i passaggi per eseguire la demo.  

```
import { readFileSync } from "node:fs";
import { join } from "node:path";

import axios from "axios";

import {
  DescribeTargetGroupsCommand,
  DescribeTargetHealthCommand,
  ElasticLoadBalancingV2Client,
} from "@aws-sdk/client-elastic-load-balancing-v2";
import {
  DescribeInstanceInformationCommand,
  PutParameterCommand,
  SSMClient,
  SendCommandCommand,
} from "@aws-sdk/client-ssm";
import {
  IAMClient,
  CreatePolicyCommand,
  CreateRoleCommand,
  AttachRolePolicyCommand,
  CreateInstanceProfileCommand,
  AddRoleToInstanceProfileCommand,
  waitUntilInstanceProfileExists,
} from "@aws-sdk/client-iam";
import {
  AutoScalingClient,
  DescribeAutoScalingGroupsCommand,
  TerminateInstanceInAutoScalingGroupCommand,
} from "@aws-sdk/client-auto-scaling";
import {
  DescribeIamInstanceProfileAssociationsCommand,
  EC2Client,
  RebootInstancesCommand,
  ReplaceIamInstanceProfileAssociationCommand,
} from "@aws-sdk/client-ec2";

import {
  ScenarioAction,
  ScenarioInput,
  ScenarioOutput,
} from "@aws-doc-sdk-examples/lib/scenario/scenario.js";
import { retry } from "@aws-doc-sdk-examples/lib/utils/util-timers.js";

import { MESSAGES, NAMES, RESOURCES_PATH } from "./constants.js";
import { findLoadBalancer } from "./shared.js";

const getRecommendation = new ScenarioAction(
  "getRecommendation",
  async (state) => {
    const loadBalancer = await findLoadBalancer(NAMES.loadBalancerName);
    if (loadBalancer) {
      state.loadBalancerDnsName = loadBalancer.DNSName;
      try {
        state.recommendation = (
          await axios.get(`http://${state.loadBalancerDnsName}`)
        ).data;
      } catch (e) {
        state.recommendation = e instanceof Error ? e.message : e;
      }
    } else {
      throw new Error(MESSAGES.demoFindLoadBalancerError);
    }
  },
);

const getRecommendationResult = new ScenarioOutput(
  "getRecommendationResult",
  (state) =>
    `Recommendation:\n${JSON.stringify(state.recommendation, null, 2)}`,
  { preformatted: true },
);

const getHealthCheck = new ScenarioAction("getHealthCheck", async (state) => {
  const client = new ElasticLoadBalancingV2Client({});
  const { TargetGroups } = await client.send(
    new DescribeTargetGroupsCommand({
      Names: [NAMES.loadBalancerTargetGroupName],
    }),
  );

  const { TargetHealthDescriptions } = await client.send(
    new DescribeTargetHealthCommand({
      TargetGroupArn: TargetGroups[0].TargetGroupArn,
    }),
  );
  state.targetHealthDescriptions = TargetHealthDescriptions;
});

const getHealthCheckResult = new ScenarioOutput(
  "getHealthCheckResult",
  /**
   * @param {{ targetHealthDescriptions: import('@aws-sdk/client-elastic-load-balancing-v2').TargetHealthDescription[]}} state
   */
  (state) => {
    const status = state.targetHealthDescriptions
      .map((th) => `${th.Target.Id}: ${th.TargetHealth.State}`)
      .join("\n");
    return `Health check:\n${status}`;
  },
  { preformatted: true },
);

const loadBalancerLoop = new ScenarioAction(
  "loadBalancerLoop",
  getRecommendation.action,
  {
    whileConfig: {
      whileFn: ({ loadBalancerCheck }) => loadBalancerCheck,
      input: new ScenarioInput(
        "loadBalancerCheck",
        MESSAGES.demoLoadBalancerCheck,
        {
          type: "confirm",
        },
      ),
      output: getRecommendationResult,
    },
  },
);

const healthCheckLoop = new ScenarioAction(
  "healthCheckLoop",
  getHealthCheck.action,
  {
    whileConfig: {
      whileFn: ({ healthCheck }) => healthCheck,
      input: new ScenarioInput("healthCheck", MESSAGES.demoHealthCheck, {
        type: "confirm",
      }),
      output: getHealthCheckResult,
    },
  },
);

const statusSteps = [
  getRecommendation,
  getRecommendationResult,
  getHealthCheck,
  getHealthCheckResult,
];

/**
 * @type {import('@aws-doc-sdk-examples/lib/scenario.js').Step[]}
 */
export const demoSteps = [
  new ScenarioOutput("header", MESSAGES.demoHeader, { header: true }),
  new ScenarioOutput("sanityCheck", MESSAGES.demoSanityCheck),
  ...statusSteps,
  new ScenarioInput(
    "brokenDependencyConfirmation",
    MESSAGES.demoBrokenDependencyConfirmation,
    { type: "confirm" },
  ),
  new ScenarioAction("brokenDependency", async (state) => {
    if (!state.brokenDependencyConfirmation) {
      process.exit();
    } else {
      const client = new SSMClient({});
      state.badTableName = `fake-table-${Date.now()}`;
      await client.send(
        new PutParameterCommand({
          Name: NAMES.ssmTableNameKey,
          Value: state.badTableName,
          Overwrite: true,
          Type: "String",
        }),
      );
    }
  }),
  new ScenarioOutput("testBrokenDependency", (state) =>
    MESSAGES.demoTestBrokenDependency.replace(
      "${TABLE_NAME}",
      state.badTableName,
    ),
  ),
  ...statusSteps,
  new ScenarioInput(
    "staticResponseConfirmation",
    MESSAGES.demoStaticResponseConfirmation,
    { type: "confirm" },
  ),
  new ScenarioAction("staticResponse", async (state) => {
    if (!state.staticResponseConfirmation) {
      process.exit();
    } else {
      const client = new SSMClient({});
      await client.send(
        new PutParameterCommand({
          Name: NAMES.ssmFailureResponseKey,
          Value: "static",
          Overwrite: true,
          Type: "String",
        }),
      );
    }
  }),
  new ScenarioOutput("testStaticResponse", MESSAGES.demoTestStaticResponse),
  ...statusSteps,
  new ScenarioInput(
    "badCredentialsConfirmation",
    MESSAGES.demoBadCredentialsConfirmation,
    { type: "confirm" },
  ),
  new ScenarioAction("badCredentialsExit", (state) => {
    if (!state.badCredentialsConfirmation) {
      process.exit();
    }
  }),
  new ScenarioAction("fixDynamoDBName", async () => {
    const client = new SSMClient({});
    await client.send(
      new PutParameterCommand({
        Name: NAMES.ssmTableNameKey,
        Value: NAMES.tableName,
        Overwrite: true,
        Type: "String",
      }),
    );
  }),
  new ScenarioAction(
    "badCredentials",
    /**
     * @param {{ targetInstance: import('@aws-sdk/client-auto-scaling').Instance }} state
     */
    async (state) => {
      await createSsmOnlyInstanceProfile();
      const autoScalingClient = new AutoScalingClient({});
      const { AutoScalingGroups } = await autoScalingClient.send(
        new DescribeAutoScalingGroupsCommand({
          AutoScalingGroupNames: [NAMES.autoScalingGroupName],
        }),
      );
      state.targetInstance = AutoScalingGroups[0].Instances[0];
      const ec2Client = new EC2Client({});
      const { IamInstanceProfileAssociations } = await ec2Client.send(
        new DescribeIamInstanceProfileAssociationsCommand({
          Filters: [
            { Name: "instance-id", Values: [state.targetInstance.InstanceId] },
          ],
        }),
      );
      state.instanceProfileAssociationId =
        IamInstanceProfileAssociations[0].AssociationId;
      await retry({ intervalInMs: 1000, maxRetries: 30 }, () =>
        ec2Client.send(
          new ReplaceIamInstanceProfileAssociationCommand({
            AssociationId: state.instanceProfileAssociationId,
            IamInstanceProfile: { Name: NAMES.ssmOnlyInstanceProfileName },
          }),
        ),
      );

      await ec2Client.send(
        new RebootInstancesCommand({
          InstanceIds: [state.targetInstance.InstanceId],
        }),
      );

      const ssmClient = new SSMClient({});
      await retry({ intervalInMs: 20000, maxRetries: 15 }, async () => {
        const { InstanceInformationList } = await ssmClient.send(
          new DescribeInstanceInformationCommand({}),
        );

        const instance = InstanceInformationList.find(
          (info) => info.InstanceId === state.targetInstance.InstanceId,
        );

        if (!instance) {
          throw new Error("Instance not found.");
        }
      });

      await ssmClient.send(
        new SendCommandCommand({
          InstanceIds: [state.targetInstance.InstanceId],
          DocumentName: "AWS-RunShellScript",
          Parameters: { commands: ["cd / && sudo python3 server.py 80"] },
        }),
      );
    },
  ),
  new ScenarioOutput(
    "testBadCredentials",
    /**
     * @param {{ targetInstance: import('@aws-sdk/client-ssm').InstanceInformation}} state
     */
    (state) =>
      MESSAGES.demoTestBadCredentials.replace(
        "${INSTANCE_ID}",
        state.targetInstance.InstanceId,
      ),
  ),
  loadBalancerLoop,
  new ScenarioInput(
    "deepHealthCheckConfirmation",
    MESSAGES.demoDeepHealthCheckConfirmation,
    { type: "confirm" },
  ),
  new ScenarioAction("deepHealthCheckExit", (state) => {
    if (!state.deepHealthCheckConfirmation) {
      process.exit();
    }
  }),
  new ScenarioAction("deepHealthCheck", async () => {
    const client = new SSMClient({});
    await client.send(
      new PutParameterCommand({
        Name: NAMES.ssmHealthCheckKey,
        Value: "deep",
        Overwrite: true,
        Type: "String",
      }),
    );
  }),
  new ScenarioOutput("testDeepHealthCheck", MESSAGES.demoTestDeepHealthCheck),
  healthCheckLoop,
  loadBalancerLoop,
  new ScenarioInput(
    "killInstanceConfirmation",
    /**
     * @param {{ targetInstance: import('@aws-sdk/client-ssm').InstanceInformation }} state
     */
    (state) =>
      MESSAGES.demoKillInstanceConfirmation.replace(
        "${INSTANCE_ID}",
        state.targetInstance.InstanceId,
      ),
    { type: "confirm" },
  ),
  new ScenarioAction("killInstanceExit", (state) => {
    if (!state.killInstanceConfirmation) {
      process.exit();
    }
  }),
  new ScenarioAction(
    "killInstance",
    /**
     * @param {{ targetInstance: import('@aws-sdk/client-ssm').InstanceInformation }} state
     */
    async (state) => {
      const client = new AutoScalingClient({});
      await client.send(
        new TerminateInstanceInAutoScalingGroupCommand({
          InstanceId: state.targetInstance.InstanceId,
          ShouldDecrementDesiredCapacity: false,
        }),
      );
    },
  ),
  new ScenarioOutput("testKillInstance", MESSAGES.demoTestKillInstance),
  healthCheckLoop,
  loadBalancerLoop,
  new ScenarioInput("failOpenConfirmation", MESSAGES.demoFailOpenConfirmation, {
    type: "confirm",
  }),
  new ScenarioAction("failOpenExit", (state) => {
    if (!state.failOpenConfirmation) {
      process.exit();
    }
  }),
  new ScenarioAction("failOpen", () => {
    const client = new SSMClient({});
    return client.send(
      new PutParameterCommand({
        Name: NAMES.ssmTableNameKey,
        Value: `fake-table-${Date.now()}`,
        Overwrite: true,
        Type: "String",
      }),
    );
  }),
  new ScenarioOutput("testFailOpen", MESSAGES.demoFailOpenTest),
  healthCheckLoop,
  loadBalancerLoop,
  new ScenarioInput(
    "resetTableConfirmation",
    MESSAGES.demoResetTableConfirmation,
    { type: "confirm" },
  ),
  new ScenarioAction("resetTableExit", (state) => {
    if (!state.resetTableConfirmation) {
      process.exit();
    }
  }),
  new ScenarioAction("resetTable", async () => {
    const client = new SSMClient({});
    await client.send(
      new PutParameterCommand({
        Name: NAMES.ssmTableNameKey,
        Value: NAMES.tableName,
        Overwrite: true,
        Type: "String",
      }),
    );
  }),
  new ScenarioOutput("testResetTable", MESSAGES.demoTestResetTable),
  healthCheckLoop,
  loadBalancerLoop,
];

async function createSsmOnlyInstanceProfile() {
  const iamClient = new IAMClient({});
  const { Policy } = await iamClient.send(
    new CreatePolicyCommand({
      PolicyName: NAMES.ssmOnlyPolicyName,
      PolicyDocument: readFileSync(
        join(RESOURCES_PATH, "ssm_only_policy.json"),
      ),
    }),
  );
  await iamClient.send(
    new CreateRoleCommand({
      RoleName: NAMES.ssmOnlyRoleName,
      AssumeRolePolicyDocument: JSON.stringify({
        Version: "2012-10-17",
        Statement: [
          {
            Effect: "Allow",
            Principal: { Service: "ec2.amazonaws.com" },
            Action: "sts:AssumeRole",
          },
        ],
      }),
    }),
  );
  await iamClient.send(
    new AttachRolePolicyCommand({
      RoleName: NAMES.ssmOnlyRoleName,
      PolicyArn: Policy.Arn,
    }),
  );
  await iamClient.send(
    new AttachRolePolicyCommand({
      RoleName: NAMES.ssmOnlyRoleName,
      PolicyArn: "arn:aws:iam::aws:policy/AmazonSSMManagedInstanceCore",
    }),
  );
  const { InstanceProfile } = await iamClient.send(
    new CreateInstanceProfileCommand({
      InstanceProfileName: NAMES.ssmOnlyInstanceProfileName,
    }),
  );
  await waitUntilInstanceProfileExists(
    { client: iamClient },
    { InstanceProfileName: NAMES.ssmOnlyInstanceProfileName },
  );
  await iamClient.send(
    new AddRoleToInstanceProfileCommand({
      InstanceProfileName: NAMES.ssmOnlyInstanceProfileName,
      RoleName: NAMES.ssmOnlyRoleName,
    }),
  );

  return InstanceProfile;
}
```
Crea i passaggi per distruggere tutte le risorse.  

```
import { unlinkSync } from "node:fs";

import { DynamoDBClient, DeleteTableCommand } from "@aws-sdk/client-dynamodb";
import {
  EC2Client,
  DeleteKeyPairCommand,
  DeleteLaunchTemplateCommand,
  RevokeSecurityGroupIngressCommand,
} from "@aws-sdk/client-ec2";
import {
  IAMClient,
  DeleteInstanceProfileCommand,
  RemoveRoleFromInstanceProfileCommand,
  DeletePolicyCommand,
  DeleteRoleCommand,
  DetachRolePolicyCommand,
  paginateListPolicies,
} from "@aws-sdk/client-iam";
import {
  AutoScalingClient,
  DeleteAutoScalingGroupCommand,
  TerminateInstanceInAutoScalingGroupCommand,
  UpdateAutoScalingGroupCommand,
  paginateDescribeAutoScalingGroups,
} from "@aws-sdk/client-auto-scaling";
import {
  DeleteLoadBalancerCommand,
  DeleteTargetGroupCommand,
  DescribeTargetGroupsCommand,
  ElasticLoadBalancingV2Client,
} from "@aws-sdk/client-elastic-load-balancing-v2";

import {
  ScenarioOutput,
  ScenarioInput,
  ScenarioAction,
} from "@aws-doc-sdk-examples/lib/scenario/index.js";
import { loadState } from "@aws-doc-sdk-examples/lib/scenario/steps-common.js";
import { retry } from "@aws-doc-sdk-examples/lib/utils/util-timers.js";

import { MESSAGES, NAMES } from "./constants.js";
import { findLoadBalancer } from "./shared.js";

/**
 * @type {import('@aws-doc-sdk-examples/lib/scenario.js').Step[]}
 */
export const destroySteps = [
  loadState,
  new ScenarioInput("destroy", MESSAGES.destroy, { type: "confirm" }),
  new ScenarioAction(
    "abort",
    (state) => state.destroy === false && process.exit(),
  ),
  new ScenarioAction("deleteTable", async (c) => {
    try {
      const client = new DynamoDBClient({});
      await client.send(new DeleteTableCommand({ TableName: NAMES.tableName }));
    } catch (e) {
      c.deleteTableError = e;
    }
  }),
  new ScenarioOutput("deleteTableResult", (state) => {
    if (state.deleteTableError) {
      console.error(state.deleteTableError);
      return MESSAGES.deleteTableError.replace(
        "${TABLE_NAME}",
        NAMES.tableName,
      );
    }
    return MESSAGES.deletedTable.replace("${TABLE_NAME}", NAMES.tableName);
  }),
  new ScenarioAction("deleteKeyPair", async (state) => {
    try {
      const client = new EC2Client({});
      await client.send(
        new DeleteKeyPairCommand({ KeyName: NAMES.keyPairName }),
      );
      unlinkSync(`${NAMES.keyPairName}.pem`);
    } catch (e) {
      state.deleteKeyPairError = e;
    }
  }),
  new ScenarioOutput("deleteKeyPairResult", (state) => {
    if (state.deleteKeyPairError) {
      console.error(state.deleteKeyPairError);
      return MESSAGES.deleteKeyPairError.replace(
        "${KEY_PAIR_NAME}",
        NAMES.keyPairName,
      );
    }
    return MESSAGES.deletedKeyPair.replace(
      "${KEY_PAIR_NAME}",
      NAMES.keyPairName,
    );
  }),
  new ScenarioAction("detachPolicyFromRole", async (state) => {
    try {
      const client = new IAMClient({});
      const policy = await findPolicy(NAMES.instancePolicyName);

      if (!policy) {
        state.detachPolicyFromRoleError = new Error(
          `Policy ${NAMES.instancePolicyName} not found.`,
        );
      } else {
        await client.send(
          new DetachRolePolicyCommand({
            RoleName: NAMES.instanceRoleName,
            PolicyArn: policy.Arn,
          }),
        );
      }
    } catch (e) {
      state.detachPolicyFromRoleError = e;
    }
  }),
  new ScenarioOutput("detachedPolicyFromRole", (state) => {
    if (state.detachPolicyFromRoleError) {
      console.error(state.detachPolicyFromRoleError);
      return MESSAGES.detachPolicyFromRoleError
        .replace("${INSTANCE_POLICY_NAME}", NAMES.instancePolicyName)
        .replace("${INSTANCE_ROLE_NAME}", NAMES.instanceRoleName);
    }
    return MESSAGES.detachedPolicyFromRole
      .replace("${INSTANCE_POLICY_NAME}", NAMES.instancePolicyName)
      .replace("${INSTANCE_ROLE_NAME}", NAMES.instanceRoleName);
  }),
  new ScenarioAction("deleteInstancePolicy", async (state) => {
    const client = new IAMClient({});
    const policy = await findPolicy(NAMES.instancePolicyName);

    if (!policy) {
      state.deletePolicyError = new Error(
        `Policy ${NAMES.instancePolicyName} not found.`,
      );
    } else {
      return client.send(
        new DeletePolicyCommand({
          PolicyArn: policy.Arn,
        }),
      );
    }
  }),
  new ScenarioOutput("deletePolicyResult", (state) => {
    if (state.deletePolicyError) {
      console.error(state.deletePolicyError);
      return MESSAGES.deletePolicyError.replace(
        "${INSTANCE_POLICY_NAME}",
        NAMES.instancePolicyName,
      );
    }
    return MESSAGES.deletedPolicy.replace(
      "${INSTANCE_POLICY_NAME}",
      NAMES.instancePolicyName,
    );
  }),
  new ScenarioAction("removeRoleFromInstanceProfile", async (state) => {
    try {
      const client = new IAMClient({});
      await client.send(
        new RemoveRoleFromInstanceProfileCommand({
          RoleName: NAMES.instanceRoleName,
          InstanceProfileName: NAMES.instanceProfileName,
        }),
      );
    } catch (e) {
      state.removeRoleFromInstanceProfileError = e;
    }
  }),
  new ScenarioOutput("removeRoleFromInstanceProfileResult", (state) => {
    if (state.removeRoleFromInstanceProfile) {
      console.error(state.removeRoleFromInstanceProfileError);
      return MESSAGES.removeRoleFromInstanceProfileError
        .replace("${INSTANCE_PROFILE_NAME}", NAMES.instanceProfileName)
        .replace("${INSTANCE_ROLE_NAME}", NAMES.instanceRoleName);
    }
    return MESSAGES.removedRoleFromInstanceProfile
      .replace("${INSTANCE_PROFILE_NAME}", NAMES.instanceProfileName)
      .replace("${INSTANCE_ROLE_NAME}", NAMES.instanceRoleName);
  }),
  new ScenarioAction("deleteInstanceRole", async (state) => {
    try {
      const client = new IAMClient({});
      await client.send(
        new DeleteRoleCommand({
          RoleName: NAMES.instanceRoleName,
        }),
      );
    } catch (e) {
      state.deleteInstanceRoleError = e;
    }
  }),
  new ScenarioOutput("deleteInstanceRoleResult", (state) => {
    if (state.deleteInstanceRoleError) {
      console.error(state.deleteInstanceRoleError);
      return MESSAGES.deleteInstanceRoleError.replace(
        "${INSTANCE_ROLE_NAME}",
        NAMES.instanceRoleName,
      );
    }
    return MESSAGES.deletedInstanceRole.replace(
      "${INSTANCE_ROLE_NAME}",
      NAMES.instanceRoleName,
    );
  }),
  new ScenarioAction("deleteInstanceProfile", async (state) => {
    try {
      const client = new IAMClient({});
      await client.send(
        new DeleteInstanceProfileCommand({
          InstanceProfileName: NAMES.instanceProfileName,
        }),
      );
    } catch (e) {
      state.deleteInstanceProfileError = e;
    }
  }),
  new ScenarioOutput("deleteInstanceProfileResult", (state) => {
    if (state.deleteInstanceProfileError) {
      console.error(state.deleteInstanceProfileError);
      return MESSAGES.deleteInstanceProfileError.replace(
        "${INSTANCE_PROFILE_NAME}",
        NAMES.instanceProfileName,
      );
    }
    return MESSAGES.deletedInstanceProfile.replace(
      "${INSTANCE_PROFILE_NAME}",
      NAMES.instanceProfileName,
    );
  }),
  new ScenarioAction("deleteAutoScalingGroup", async (state) => {
    try {
      await terminateGroupInstances(NAMES.autoScalingGroupName);
      await retry({ intervalInMs: 60000, maxRetries: 60 }, async () => {
        await deleteAutoScalingGroup(NAMES.autoScalingGroupName);
      });
    } catch (e) {
      state.deleteAutoScalingGroupError = e;
    }
  }),
  new ScenarioOutput("deleteAutoScalingGroupResult", (state) => {
    if (state.deleteAutoScalingGroupError) {
      console.error(state.deleteAutoScalingGroupError);
      return MESSAGES.deleteAutoScalingGroupError.replace(
        "${AUTO_SCALING_GROUP_NAME}",
        NAMES.autoScalingGroupName,
      );
    }
    return MESSAGES.deletedAutoScalingGroup.replace(
      "${AUTO_SCALING_GROUP_NAME}",
      NAMES.autoScalingGroupName,
    );
  }),
  new ScenarioAction("deleteLaunchTemplate", async (state) => {
    const client = new EC2Client({});
    try {
      await client.send(
        new DeleteLaunchTemplateCommand({
          LaunchTemplateName: NAMES.launchTemplateName,
        }),
      );
    } catch (e) {
      state.deleteLaunchTemplateError = e;
    }
  }),
  new ScenarioOutput("deleteLaunchTemplateResult", (state) => {
    if (state.deleteLaunchTemplateError) {
      console.error(state.deleteLaunchTemplateError);
      return MESSAGES.deleteLaunchTemplateError.replace(
        "${LAUNCH_TEMPLATE_NAME}",
        NAMES.launchTemplateName,
      );
    }
    return MESSAGES.deletedLaunchTemplate.replace(
      "${LAUNCH_TEMPLATE_NAME}",
      NAMES.launchTemplateName,
    );
  }),
  new ScenarioAction("deleteLoadBalancer", async (state) => {
    try {
      const client = new ElasticLoadBalancingV2Client({});
      const loadBalancer = await findLoadBalancer(NAMES.loadBalancerName);
      await client.send(
        new DeleteLoadBalancerCommand({
          LoadBalancerArn: loadBalancer.LoadBalancerArn,
        }),
      );
      await retry({ intervalInMs: 1000, maxRetries: 60 }, async () => {
        const lb = await findLoadBalancer(NAMES.loadBalancerName);
        if (lb) {
          throw new Error("Load balancer still exists.");
        }
      });
    } catch (e) {
      state.deleteLoadBalancerError = e;
    }
  }),
  new ScenarioOutput("deleteLoadBalancerResult", (state) => {
    if (state.deleteLoadBalancerError) {
      console.error(state.deleteLoadBalancerError);
      return MESSAGES.deleteLoadBalancerError.replace(
        "${LB_NAME}",
        NAMES.loadBalancerName,
      );
    }
    return MESSAGES.deletedLoadBalancer.replace(
      "${LB_NAME}",
      NAMES.loadBalancerName,
    );
  }),
  new ScenarioAction("deleteLoadBalancerTargetGroup", async (state) => {
    const client = new ElasticLoadBalancingV2Client({});
    try {
      const { TargetGroups } = await client.send(
        new DescribeTargetGroupsCommand({
          Names: [NAMES.loadBalancerTargetGroupName],
        }),
      );

      await retry({ intervalInMs: 1000, maxRetries: 30 }, () =>
        client.send(
          new DeleteTargetGroupCommand({
            TargetGroupArn: TargetGroups[0].TargetGroupArn,
          }),
        ),
      );
    } catch (e) {
      state.deleteLoadBalancerTargetGroupError = e;
    }
  }),
  new ScenarioOutput("deleteLoadBalancerTargetGroupResult", (state) => {
    if (state.deleteLoadBalancerTargetGroupError) {
      console.error(state.deleteLoadBalancerTargetGroupError);
      return MESSAGES.deleteLoadBalancerTargetGroupError.replace(
        "${TARGET_GROUP_NAME}",
        NAMES.loadBalancerTargetGroupName,
      );
    }
    return MESSAGES.deletedLoadBalancerTargetGroup.replace(
      "${TARGET_GROUP_NAME}",
      NAMES.loadBalancerTargetGroupName,
    );
  }),
  new ScenarioAction("detachSsmOnlyRoleFromProfile", async (state) => {
    try {
      const client = new IAMClient({});
      await client.send(
        new RemoveRoleFromInstanceProfileCommand({
          InstanceProfileName: NAMES.ssmOnlyInstanceProfileName,
          RoleName: NAMES.ssmOnlyRoleName,
        }),
      );
    } catch (e) {
      state.detachSsmOnlyRoleFromProfileError = e;
    }
  }),
  new ScenarioOutput("detachSsmOnlyRoleFromProfileResult", (state) => {
    if (state.detachSsmOnlyRoleFromProfileError) {
      console.error(state.detachSsmOnlyRoleFromProfileError);
      return MESSAGES.detachSsmOnlyRoleFromProfileError
        .replace("${ROLE_NAME}", NAMES.ssmOnlyRoleName)
        .replace("${PROFILE_NAME}", NAMES.ssmOnlyInstanceProfileName);
    }
    return MESSAGES.detachedSsmOnlyRoleFromProfile
      .replace("${ROLE_NAME}", NAMES.ssmOnlyRoleName)
      .replace("${PROFILE_NAME}", NAMES.ssmOnlyInstanceProfileName);
  }),
  new ScenarioAction("detachSsmOnlyCustomRolePolicy", async (state) => {
    try {
      const iamClient = new IAMClient({});
      const ssmOnlyPolicy = await findPolicy(NAMES.ssmOnlyPolicyName);
      await iamClient.send(
        new DetachRolePolicyCommand({
          RoleName: NAMES.ssmOnlyRoleName,
          PolicyArn: ssmOnlyPolicy.Arn,
        }),
      );
    } catch (e) {
      state.detachSsmOnlyCustomRolePolicyError = e;
    }
  }),
  new ScenarioOutput("detachSsmOnlyCustomRolePolicyResult", (state) => {
    if (state.detachSsmOnlyCustomRolePolicyError) {
      console.error(state.detachSsmOnlyCustomRolePolicyError);
      return MESSAGES.detachSsmOnlyCustomRolePolicyError
        .replace("${ROLE_NAME}", NAMES.ssmOnlyRoleName)
        .replace("${POLICY_NAME}", NAMES.ssmOnlyPolicyName);
    }
    return MESSAGES.detachedSsmOnlyCustomRolePolicy
      .replace("${ROLE_NAME}", NAMES.ssmOnlyRoleName)
      .replace("${POLICY_NAME}", NAMES.ssmOnlyPolicyName);
  }),
  new ScenarioAction("detachSsmOnlyAWSRolePolicy", async (state) => {
    try {
      const iamClient = new IAMClient({});
      await iamClient.send(
        new DetachRolePolicyCommand({
          RoleName: NAMES.ssmOnlyRoleName,
          PolicyArn: "arn:aws:iam::aws:policy/AmazonSSMManagedInstanceCore",
        }),
      );
    } catch (e) {
      state.detachSsmOnlyAWSRolePolicyError = e;
    }
  }),
  new ScenarioOutput("detachSsmOnlyAWSRolePolicyResult", (state) => {
    if (state.detachSsmOnlyAWSRolePolicyError) {
      console.error(state.detachSsmOnlyAWSRolePolicyError);
      return MESSAGES.detachSsmOnlyAWSRolePolicyError
        .replace("${ROLE_NAME}", NAMES.ssmOnlyRoleName)
        .replace("${POLICY_NAME}", "AmazonSSMManagedInstanceCore");
    }
    return MESSAGES.detachedSsmOnlyAWSRolePolicy
      .replace("${ROLE_NAME}", NAMES.ssmOnlyRoleName)
      .replace("${POLICY_NAME}", "AmazonSSMManagedInstanceCore");
  }),
  new ScenarioAction("deleteSsmOnlyInstanceProfile", async (state) => {
    try {
      const iamClient = new IAMClient({});
      await iamClient.send(
        new DeleteInstanceProfileCommand({
          InstanceProfileName: NAMES.ssmOnlyInstanceProfileName,
        }),
      );
    } catch (e) {
      state.deleteSsmOnlyInstanceProfileError = e;
    }
  }),
  new ScenarioOutput("deleteSsmOnlyInstanceProfileResult", (state) => {
    if (state.deleteSsmOnlyInstanceProfileError) {
      console.error(state.deleteSsmOnlyInstanceProfileError);
      return MESSAGES.deleteSsmOnlyInstanceProfileError.replace(
        "${INSTANCE_PROFILE_NAME}",
        NAMES.ssmOnlyInstanceProfileName,
      );
    }
    return MESSAGES.deletedSsmOnlyInstanceProfile.replace(
      "${INSTANCE_PROFILE_NAME}",
      NAMES.ssmOnlyInstanceProfileName,
    );
  }),
  new ScenarioAction("deleteSsmOnlyPolicy", async (state) => {
    try {
      const iamClient = new IAMClient({});
      const ssmOnlyPolicy = await findPolicy(NAMES.ssmOnlyPolicyName);
      await iamClient.send(
        new DeletePolicyCommand({
          PolicyArn: ssmOnlyPolicy.Arn,
        }),
      );
    } catch (e) {
      state.deleteSsmOnlyPolicyError = e;
    }
  }),
  new ScenarioOutput("deleteSsmOnlyPolicyResult", (state) => {
    if (state.deleteSsmOnlyPolicyError) {
      console.error(state.deleteSsmOnlyPolicyError);
      return MESSAGES.deleteSsmOnlyPolicyError.replace(
        "${POLICY_NAME}",
        NAMES.ssmOnlyPolicyName,
      );
    }
    return MESSAGES.deletedSsmOnlyPolicy.replace(
      "${POLICY_NAME}",
      NAMES.ssmOnlyPolicyName,
    );
  }),
  new ScenarioAction("deleteSsmOnlyRole", async (state) => {
    try {
      const iamClient = new IAMClient({});
      await iamClient.send(
        new DeleteRoleCommand({
          RoleName: NAMES.ssmOnlyRoleName,
        }),
      );
    } catch (e) {
      state.deleteSsmOnlyRoleError = e;
    }
  }),
  new ScenarioOutput("deleteSsmOnlyRoleResult", (state) => {
    if (state.deleteSsmOnlyRoleError) {
      console.error(state.deleteSsmOnlyRoleError);
      return MESSAGES.deleteSsmOnlyRoleError.replace(
        "${ROLE_NAME}",
        NAMES.ssmOnlyRoleName,
      );
    }
    return MESSAGES.deletedSsmOnlyRole.replace(
      "${ROLE_NAME}",
      NAMES.ssmOnlyRoleName,
    );
  }),
  new ScenarioAction(
    "revokeSecurityGroupIngress",
    async (
      /** @type {{ myIp: string, defaultSecurityGroup: { GroupId: string } }} */ state,
    ) => {
      const ec2Client = new EC2Client({});

      try {
        await ec2Client.send(
          new RevokeSecurityGroupIngressCommand({
            GroupId: state.defaultSecurityGroup.GroupId,
            CidrIp: `${state.myIp}/32`,
            FromPort: 80,
            ToPort: 80,
            IpProtocol: "tcp",
          }),
        );
      } catch (e) {
        state.revokeSecurityGroupIngressError = e;
      }
    },
  ),
  new ScenarioOutput("revokeSecurityGroupIngressResult", (state) => {
    if (state.revokeSecurityGroupIngressError) {
      console.error(state.revokeSecurityGroupIngressError);
      return MESSAGES.revokeSecurityGroupIngressError.replace(
        "${IP}",
        state.myIp,
      );
    }
    return MESSAGES.revokedSecurityGroupIngress.replace("${IP}", state.myIp);
  }),
];

/**
 * @param {string} policyName
 */
async function findPolicy(policyName) {
  const client = new IAMClient({});
  const paginatedPolicies = paginateListPolicies({ client }, {});
  for await (const page of paginatedPolicies) {
    const policy = page.Policies.find((p) => p.PolicyName === policyName);
    if (policy) {
      return policy;
    }
  }
}

/**
 * @param {string} groupName
 */
async function deleteAutoScalingGroup(groupName) {
  const client = new AutoScalingClient({});
  try {
    await client.send(
      new DeleteAutoScalingGroupCommand({
        AutoScalingGroupName: groupName,
      }),
    );
  } catch (err) {
    if (!(err instanceof Error)) {
      throw err;
    }
    console.log(err.name);
    throw err;
  }
}

/**
 * @param {string} groupName
 */
async function terminateGroupInstances(groupName) {
  const autoScalingClient = new AutoScalingClient({});
  const group = await findAutoScalingGroup(groupName);
  await autoScalingClient.send(
    new UpdateAutoScalingGroupCommand({
      AutoScalingGroupName: group.AutoScalingGroupName,
      MinSize: 0,
    }),
  );
  for (const i of group.Instances) {
    await retry({ intervalInMs: 1000, maxRetries: 30 }, () =>
      autoScalingClient.send(
        new TerminateInstanceInAutoScalingGroupCommand({
          InstanceId: i.InstanceId,
          ShouldDecrementDesiredCapacity: true,
        }),
      ),
    );
  }
}

async function findAutoScalingGroup(groupName) {
  const client = new AutoScalingClient({});
  const paginatedGroups = paginateDescribeAutoScalingGroups({ client }, {});
  for await (const page of paginatedGroups) {
    const group = page.AutoScalingGroups.find(
      (g) => g.AutoScalingGroupName === groupName,
    );
    if (group) {
      return group;
    }
  }
  throw new Error(`Auto scaling group ${groupName} not found.`);
}
```
+ Per informazioni dettagliate sull’API, consulta i seguenti argomenti nella *documentazione di riferimento dell’API AWS SDK per JavaScript *.
  + [AttachLoadBalancerTargetGroups](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/auto-scaling/command/AttachLoadBalancerTargetGroupsCommand)
  + [CreateAutoScalingGroup](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/auto-scaling/command/CreateAutoScalingGroupCommand)
  + [CreateInstanceProfile](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/iam/command/CreateInstanceProfileCommand)
  + [CreateLaunchTemplate](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2/command/CreateLaunchTemplateCommand)
  + [CreateListener](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/elastic-load-balancing-v2/command/CreateListenerCommand)
  + [CreateLoadBalancer](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/elastic-load-balancing-v2/command/CreateLoadBalancerCommand)
  + [CreateTargetGroup](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/elastic-load-balancing-v2/command/CreateTargetGroupCommand)
  + [DeleteAutoScalingGroup](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/auto-scaling/command/DeleteAutoScalingGroupCommand)
  + [DeleteInstanceProfile](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/iam/command/DeleteInstanceProfileCommand)
  + [DeleteLaunchTemplate](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2/command/DeleteLaunchTemplateCommand)
  + [DeleteLoadBalancer](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/elastic-load-balancing-v2/command/DeleteLoadBalancerCommand)
  + [DeleteTargetGroup](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/elastic-load-balancing-v2/command/DeleteTargetGroupCommand)
  + [DescribeAutoScalingGroups](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/auto-scaling/command/DescribeAutoScalingGroupsCommand)
  + [DescribeAvailabilityZones](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2/command/DescribeAvailabilityZonesCommand)
  + [DescribeIamInstanceProfileAssociations](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2/command/DescribeIamInstanceProfileAssociationsCommand)
  + [DescribeInstances](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2/command/DescribeInstancesCommand)
  + [DescribeLoadBalancers](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/elastic-load-balancing-v2/command/DescribeLoadBalancersCommand)
  + [DescribeSubnets](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2/command/DescribeSubnetsCommand)
  + [DescribeTargetGroups](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/elastic-load-balancing-v2/command/DescribeTargetGroupsCommand)
  + [DescribeTargetHealth](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/elastic-load-balancing-v2/command/DescribeTargetHealthCommand)
  + [DescribeVpcs](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2/command/DescribeVpcsCommand)
  + [RebootInstances](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2/command/RebootInstancesCommand)
  + [ReplaceIamInstanceProfileAssociation](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2/command/ReplaceIamInstanceProfileAssociationCommand)
  + [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/auto-scaling/command/TerminateInstanceInAutoScalingGroupCommand)
  + [UpdateAutoScalingGroup](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/auto-scaling/command/UpdateAutoScalingGroupCommand)

------
#### [ Python ]

**SDK per Python (Boto3)**  
 C'è dell'altro GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/cross_service/resilient_service#code-examples). 
Esegui lo scenario interattivo al prompt dei comandi.  

```
class Runner:
    """
    Manages the deployment, demonstration, and destruction of resources for the resilient service.
    """

    def __init__(
        self,
        resource_path: str,
        recommendation: RecommendationService,
        autoscaler: AutoScalingWrapper,
        loadbalancer: ElasticLoadBalancerWrapper,
        param_helper: ParameterHelper,
    ):
        """
        Initializes the Runner class with the necessary parameters.

        :param resource_path: The path to resource files used by this example, such as IAM policies and instance scripts.
        :param recommendation: An instance of the RecommendationService class.
        :param autoscaler: An instance of the AutoScaler class.
        :param loadbalancer: An instance of the LoadBalancer class.
        :param param_helper: An instance of the ParameterHelper class.
        """
        self.resource_path = resource_path
        self.recommendation = recommendation
        self.autoscaler = autoscaler
        self.loadbalancer = loadbalancer
        self.param_helper = param_helper
        self.protocol = "HTTP"
        self.port = 80
        self.ssh_port = 22

        prefix = "doc-example-resilience"
        self.target_group_name = f"{prefix}-tg"
        self.load_balancer_name = f"{prefix}-lb"

    def deploy(self) -> None:
        """
        Deploys the resources required for the resilient service, including the DynamoDB table,
        EC2 instances, Auto Scaling group, and load balancer.
        """
        recommendations_path = f"{self.resource_path}/recommendations.json"
        startup_script = f"{self.resource_path}/server_startup_script.sh"
        instance_policy = f"{self.resource_path}/instance_policy.json"

        logging.info("Starting deployment of resources for the resilient service.")

        logging.info(
            "Creating and populating DynamoDB table '%s'.",
            self.recommendation.table_name,
        )
        self.recommendation.create()
        self.recommendation.populate(recommendations_path)

        logging.info(
            "Creating an EC2 launch template with the startup script '%s'.",
            startup_script,
        )
        self.autoscaler.create_template(startup_script, instance_policy)

        logging.info(
            "Creating an EC2 Auto Scaling group across multiple Availability Zones."
        )
        zones = self.autoscaler.create_autoscaling_group(3)

        logging.info("Creating variables that control the flow of the demo.")
        self.param_helper.reset()

        logging.info("Creating Elastic Load Balancing target group and load balancer.")

        vpc = self.autoscaler.get_default_vpc()
        subnets = self.autoscaler.get_subnets(vpc["VpcId"], zones)
        target_group = self.loadbalancer.create_target_group(
            self.target_group_name, self.protocol, self.port, vpc["VpcId"]
        )
        self.loadbalancer.create_load_balancer(
            self.load_balancer_name, [subnet["SubnetId"] for subnet in subnets]
        )
        self.loadbalancer.create_listener(self.load_balancer_name, target_group)

        self.autoscaler.attach_load_balancer_target_group(target_group)

        logging.info("Verifying access to the load balancer endpoint.")
        endpoint = self.loadbalancer.get_endpoint(self.load_balancer_name)
        lb_success = self.loadbalancer.verify_load_balancer_endpoint(endpoint)
        current_ip_address = requests.get("http://checkip.amazonaws.com").text.strip()

        if not lb_success:
            logging.warning(
                "Couldn't connect to the load balancer. Verifying that the port is open..."
            )
            sec_group, port_is_open = self.autoscaler.verify_inbound_port(
                vpc, self.port, current_ip_address
            )
            sec_group, ssh_port_is_open = self.autoscaler.verify_inbound_port(
                vpc, self.ssh_port, current_ip_address
            )
            if not port_is_open:
                logging.warning(
                    "The default security group for your VPC must allow access from this computer."
                )
                if q.ask(
                    f"Do you want to add a rule to security group {sec_group['GroupId']} to allow\n"
                    f"inbound traffic on port {self.port} from your computer's IP address of {current_ip_address}? (y/n) ",
                    q.is_yesno,
                ):
                    self.autoscaler.open_inbound_port(
                        sec_group["GroupId"], self.port, current_ip_address
                    )
            if not ssh_port_is_open:
                if q.ask(
                    f"Do you want to add a rule to security group {sec_group['GroupId']} to allow\n"
                    f"inbound SSH traffic on port {self.ssh_port} for debugging from your computer's IP address of {current_ip_address}? (y/n) ",
                    q.is_yesno,
                ):
                    self.autoscaler.open_inbound_port(
                        sec_group["GroupId"], self.ssh_port, current_ip_address
                    )
            lb_success = self.loadbalancer.verify_load_balancer_endpoint(endpoint)

        if lb_success:
            logging.info(
                "Load balancer is ready. Access it at: http://%s", current_ip_address
            )
        else:
            logging.error(
                "Couldn't get a successful response from the load balancer endpoint. Please verify your VPC and security group settings."
            )

    def demo_choices(self) -> None:
        """
        Presents choices for interacting with the deployed service, such as sending requests to
        the load balancer or checking the health of the targets.
        """
        actions = [
            "Send a GET request to the load balancer endpoint.",
            "Check the health of load balancer targets.",
            "Go to the next part of the demo.",
        ]
        choice = 0
        while choice != 2:
            logging.info("Choose an action to interact with the service.")
            choice = q.choose("Which action would you like to take? ", actions)
            if choice == 0:
                logging.info("Sending a GET request to the load balancer endpoint.")
                endpoint = self.loadbalancer.get_endpoint(self.load_balancer_name)
                logging.info("GET http://%s", endpoint)
                response = requests.get(f"http://{endpoint}")
                logging.info("Response: %s", response.status_code)
                if response.headers.get("content-type") == "application/json":
                    pp(response.json())
            elif choice == 1:
                logging.info("Checking the health of load balancer targets.")
                health = self.loadbalancer.check_target_health(self.target_group_name)
                for target in health:
                    state = target["TargetHealth"]["State"]
                    logging.info(
                        "Target %s on port %d is %s",
                        target["Target"]["Id"],
                        target["Target"]["Port"],
                        state,
                    )
                    if state != "healthy":
                        logging.warning(
                            "%s: %s",
                            target["TargetHealth"]["Reason"],
                            target["TargetHealth"]["Description"],
                        )
                logging.info(
                    "Note that it can take a minute or two for the health check to update."
                )
            elif choice == 2:
                logging.info("Proceeding to the next part of the demo.")

    def demo(self) -> None:
        """
        Runs the demonstration, showing how the service responds to different failure scenarios
        and how a resilient architecture can keep the service running.
        """
        ssm_only_policy = f"{self.resource_path}/ssm_only_policy.json"

        logging.info("Resetting parameters to starting values for the demo.")
        self.param_helper.reset()

        logging.info(
            "Starting demonstration of the service's resilience under various failure conditions."
        )
        self.demo_choices()

        logging.info(
            "Simulating failure by changing the Systems Manager parameter to a non-existent table."
        )
        self.param_helper.put(self.param_helper.table, "this-is-not-a-table")
        logging.info("Sending GET requests will now return failure codes.")
        self.demo_choices()

        logging.info("Switching to static response mode to mitigate failure.")
        self.param_helper.put(self.param_helper.failure_response, "static")
        logging.info("Sending GET requests will now return static responses.")
        self.demo_choices()

        logging.info("Restoring normal operation of the recommendation service.")
        self.param_helper.put(self.param_helper.table, self.recommendation.table_name)

        logging.info(
            "Introducing a failure by assigning bad credentials to one of the instances."
        )
        self.autoscaler.create_instance_profile(
            ssm_only_policy,
            self.autoscaler.bad_creds_policy_name,
            self.autoscaler.bad_creds_role_name,
            self.autoscaler.bad_creds_profile_name,
            ["AmazonSSMManagedInstanceCore"],
        )
        instances = self.autoscaler.get_instances()
        bad_instance_id = instances[0]
        instance_profile = self.autoscaler.get_instance_profile(bad_instance_id)
        logging.info(
            "Replacing instance profile with bad credentials for instance %s.",
            bad_instance_id,
        )
        self.autoscaler.replace_instance_profile(
            bad_instance_id,
            self.autoscaler.bad_creds_profile_name,
            instance_profile["AssociationId"],
        )
        logging.info(
            "Sending GET requests may return either a valid recommendation or a static response."
        )
        self.demo_choices()

        logging.info("Implementing deep health checks to detect unhealthy instances.")
        self.param_helper.put(self.param_helper.health_check, "deep")
        logging.info("Checking the health of the load balancer targets.")
        self.demo_choices()

        logging.info(
            "Terminating the unhealthy instance to let the auto scaler replace it."
        )
        self.autoscaler.terminate_instance(bad_instance_id)
        logging.info("The service remains resilient during instance replacement.")
        self.demo_choices()

        logging.info("Simulating a complete failure of the recommendation service.")
        self.param_helper.put(self.param_helper.table, "this-is-not-a-table")
        logging.info(
            "All instances will report as unhealthy, but the service will still return static responses."
        )
        self.demo_choices()
        self.param_helper.reset()

    def destroy(self, automation=False) -> None:
        """
        Destroys all resources created for the demo, including the load balancer, Auto Scaling group,
        EC2 instances, and DynamoDB table.
        """
        logging.info(
            "This concludes the demo. Preparing to clean up all AWS resources created during the demo."
        )
        if automation:
            cleanup = True
        else:
            cleanup = q.ask(
                "Do you want to clean up all demo resources? (y/n) ", q.is_yesno
            )

        if cleanup:
            logging.info("Deleting load balancer and related resources.")
            self.loadbalancer.delete_load_balancer(self.load_balancer_name)
            self.loadbalancer.delete_target_group(self.target_group_name)
            self.autoscaler.delete_autoscaling_group(self.autoscaler.group_name)
            self.autoscaler.delete_key_pair()
            self.autoscaler.delete_template()
            self.autoscaler.delete_instance_profile(
                self.autoscaler.bad_creds_profile_name,
                self.autoscaler.bad_creds_role_name,
            )
            logging.info("Deleting DynamoDB table and other resources.")
            self.recommendation.destroy()
        else:
            logging.warning(
                "Resources have not been deleted. Ensure you clean them up manually to avoid unexpected charges."
            )


def main() -> None:
    """
    Main function to parse arguments and run the appropriate actions for the demo.
    """
    parser = argparse.ArgumentParser()
    parser.add_argument(
        "--action",
        required=True,
        choices=["all", "deploy", "demo", "destroy"],
        help="The action to take for the demo. When 'all' is specified, resources are\n"
        "deployed, the demo is run, and resources are destroyed.",
    )
    parser.add_argument(
        "--resource_path",
        default="../../../scenarios/features/resilient_service/resources",
        help="The path to resource files used by this example, such as IAM policies and\n"
        "instance scripts.",
    )
    args = parser.parse_args()

    logging.info("Starting the Resilient Service demo.")

    prefix = "doc-example-resilience"

    # Service Clients
    ddb_client = boto3.client("dynamodb")
    elb_client = boto3.client("elbv2")
    autoscaling_client = boto3.client("autoscaling")
    ec2_client = boto3.client("ec2")
    ssm_client = boto3.client("ssm")
    iam_client = boto3.client("iam")

    # Wrapper instantiations
    recommendation = RecommendationService(
        "doc-example-recommendation-service", ddb_client
    )
    autoscaling_wrapper = AutoScalingWrapper(
        prefix,
        "t3.micro",
        "/aws/service/ami-amazon-linux-latest/amzn2-ami-hvm-x86_64-gp2",
        autoscaling_client,
        ec2_client,
        ssm_client,
        iam_client,
    )
    elb_wrapper = ElasticLoadBalancerWrapper(elb_client)
    param_helper = ParameterHelper(recommendation.table_name, ssm_client)

    # Demo invocation
    runner = Runner(
        args.resource_path,
        recommendation,
        autoscaling_wrapper,
        elb_wrapper,
        param_helper,
    )
    actions = [args.action] if args.action != "all" else ["deploy", "demo", "destroy"]
    for action in actions:
        if action == "deploy":
            runner.deploy()
        elif action == "demo":
            runner.demo()
        elif action == "destroy":
            runner.destroy()

    logging.info("Demo completed successfully.")


if __name__ == "__main__":
    logging.basicConfig(level=logging.INFO, format="%(levelname)s: %(message)s")
    main()
```
Crea una classe che racchiuda le operazioni di dimensionamento automatico e Amazon EC2.  

```
class AutoScalingWrapper:
    """
    Encapsulates Amazon EC2 Auto Scaling and EC2 management actions.
    """

    def __init__(
        self,
        resource_prefix: str,
        inst_type: str,
        ami_param: str,
        autoscaling_client: boto3.client,
        ec2_client: boto3.client,
        ssm_client: boto3.client,
        iam_client: boto3.client,
    ):
        """
        Initializes the AutoScaler class with the necessary parameters.

        :param resource_prefix: The prefix for naming AWS resources that are created by this class.
        :param inst_type: The type of EC2 instance to create, such as t3.micro.
        :param ami_param: The Systems Manager parameter used to look up the AMI that is created.
        :param autoscaling_client: A Boto3 EC2 Auto Scaling client.
        :param ec2_client: A Boto3 EC2 client.
        :param ssm_client: A Boto3 Systems Manager client.
        :param iam_client: A Boto3 IAM client.
        """
        self.inst_type = inst_type
        self.ami_param = ami_param
        self.autoscaling_client = autoscaling_client
        self.ec2_client = ec2_client
        self.ssm_client = ssm_client
        self.iam_client = iam_client
        sts_client = boto3.client("sts")
        self.account_id = sts_client.get_caller_identity()["Account"]

        self.key_pair_name = f"{resource_prefix}-key-pair"
        self.launch_template_name = f"{resource_prefix}-template-"
        self.group_name = f"{resource_prefix}-group"

        # Happy path
        self.instance_policy_name = f"{resource_prefix}-pol"
        self.instance_role_name = f"{resource_prefix}-role"
        self.instance_profile_name = f"{resource_prefix}-prof"

        # Failure mode
        self.bad_creds_policy_name = f"{resource_prefix}-bc-pol"
        self.bad_creds_role_name = f"{resource_prefix}-bc-role"
        self.bad_creds_profile_name = f"{resource_prefix}-bc-prof"


    def create_policy(self, policy_file: str, policy_name: str) -> str:
        """
        Creates a new IAM policy or retrieves the ARN of an existing policy.

        :param policy_file: The path to a JSON file that contains the policy definition.
        :param policy_name: The name to give the created policy.
        :return: The ARN of the created or existing policy.
        """
        with open(policy_file) as file:
            policy_doc = file.read()

        try:
            response = self.iam_client.create_policy(
                PolicyName=policy_name, PolicyDocument=policy_doc
            )
            policy_arn = response["Policy"]["Arn"]
            log.info(f"Policy '{policy_name}' created successfully. ARN: {policy_arn}")
            return policy_arn

        except ClientError as err:
            if err.response["Error"]["Code"] == "EntityAlreadyExists":
                # If the policy already exists, get its ARN
                response = self.iam_client.get_policy(
                    PolicyArn=f"arn:aws:iam::{self.account_id}:policy/{policy_name}"
                )
                policy_arn = response["Policy"]["Arn"]
                log.info(f"Policy '{policy_name}' already exists. ARN: {policy_arn}")
                return policy_arn
            log.error(f"Full error:\n\t{err}")

    def create_role(self, role_name: str, assume_role_doc: dict) -> str:
        """
        Creates a new IAM role or retrieves the ARN of an existing role.

        :param role_name: The name to give the created role.
        :param assume_role_doc: The assume role policy document that specifies which
                                entities can assume the role.
        :return: The ARN of the created or existing role.
        """
        try:
            response = self.iam_client.create_role(
                RoleName=role_name, AssumeRolePolicyDocument=json.dumps(assume_role_doc)
            )
            role_arn = response["Role"]["Arn"]
            log.info(f"Role '{role_name}' created successfully. ARN: {role_arn}")
            return role_arn

        except ClientError as err:
            if err.response["Error"]["Code"] == "EntityAlreadyExists":
                # If the role already exists, get its ARN
                response = self.iam_client.get_role(RoleName=role_name)
                role_arn = response["Role"]["Arn"]
                log.info(f"Role '{role_name}' already exists. ARN: {role_arn}")
                return role_arn
            log.error(f"Full error:\n\t{err}")

    def attach_policy(
        self,
        role_name: str,
        policy_arn: str,
        aws_managed_policies: Tuple[str, ...] = (),
    ) -> None:
        """
        Attaches an IAM policy to a role and optionally attaches additional AWS-managed policies.

        :param role_name: The name of the role to attach the policy to.
        :param policy_arn: The ARN of the policy to attach.
        :param aws_managed_policies: A tuple of AWS-managed policy names to attach to the role.
        """
        try:
            self.iam_client.attach_role_policy(RoleName=role_name, PolicyArn=policy_arn)
            for aws_policy in aws_managed_policies:
                self.iam_client.attach_role_policy(
                    RoleName=role_name,
                    PolicyArn=f"arn:aws:iam::aws:policy/{aws_policy}",
                )
            log.info(f"Attached policy {policy_arn} to role {role_name}.")
        except ClientError as err:
            log.error(f"Failed to attach policy {policy_arn} to role {role_name}.")
            log.error(f"Full error:\n\t{err}")

    def create_instance_profile(
        self,
        policy_file: str,
        policy_name: str,
        role_name: str,
        profile_name: str,
        aws_managed_policies: Tuple[str, ...] = (),
    ) -> str:
        """
        Creates a policy, role, and profile that is associated with instances created by
        this class. An instance's associated profile defines a role that is assumed by the
        instance. The role has attached policies that specify the AWS permissions granted to
        clients that run on the instance.

        :param policy_file: The name of a JSON file that contains the policy definition to
                            create and attach to the role.
        :param policy_name: The name to give the created policy.
        :param role_name: The name to give the created role.
        :param profile_name: The name to the created profile.
        :param aws_managed_policies: Additional AWS-managed policies that are attached to
                                     the role, such as AmazonSSMManagedInstanceCore to grant
                                     use of Systems Manager to send commands to the instance.
        :return: The ARN of the profile that is created.
        """
        assume_role_doc = {
            "Version":"2012-10-17",		 	 	 
            "Statement": [
                {
                    "Effect": "Allow",
                    "Principal": {"Service": "ec2.amazonaws.com"},
                    "Action": "sts:AssumeRole",
                }
            ],
        }
        policy_arn = self.create_policy(policy_file, policy_name)
        self.create_role(role_name, assume_role_doc)
        self.attach_policy(role_name, policy_arn, aws_managed_policies)

        try:
            profile_response = self.iam_client.create_instance_profile(
                InstanceProfileName=profile_name
            )
            waiter = self.iam_client.get_waiter("instance_profile_exists")
            waiter.wait(InstanceProfileName=profile_name)
            time.sleep(10)  # wait a little longer
            profile_arn = profile_response["InstanceProfile"]["Arn"]
            self.iam_client.add_role_to_instance_profile(
                InstanceProfileName=profile_name, RoleName=role_name
            )
            log.info("Created profile %s and added role %s.", profile_name, role_name)
        except ClientError as err:
            if err.response["Error"]["Code"] == "EntityAlreadyExists":
                prof_response = self.iam_client.get_instance_profile(
                    InstanceProfileName=profile_name
                )
                profile_arn = prof_response["InstanceProfile"]["Arn"]
                log.info(
                    "Instance profile %s already exists, nothing to do.", profile_name
                )
            log.error(f"Full error:\n\t{err}")
        return profile_arn


    def get_instance_profile(self, instance_id: str) -> Dict[str, Any]:
        """
        Gets data about the profile associated with an instance.

        :param instance_id: The ID of the instance to look up.
        :return: The profile data.
        """
        try:
            response = self.ec2_client.describe_iam_instance_profile_associations(
                Filters=[{"Name": "instance-id", "Values": [instance_id]}]
            )
            if not response["IamInstanceProfileAssociations"]:
                log.info(f"No instance profile found for instance {instance_id}.")
            profile_data = response["IamInstanceProfileAssociations"][0]
            log.info(f"Retrieved instance profile for instance {instance_id}.")
            return profile_data
        except ClientError as err:
            log.error(
                f"Failed to retrieve instance profile for instance {instance_id}."
            )
            error_code = err.response["Error"]["Code"]
            if error_code == "InvalidInstanceID.NotFound":
                log.error(f"The instance ID '{instance_id}' does not exist.")
            log.error(f"Full error:\n\t{err}")


    def replace_instance_profile(
        self,
        instance_id: str,
        new_instance_profile_name: str,
        profile_association_id: str,
    ) -> None:
        """
        Replaces the profile associated with a running instance. After the profile is
        replaced, the instance is rebooted to ensure that it uses the new profile. When
        the instance is ready, Systems Manager is used to restart the Python web server.

        :param instance_id: The ID of the instance to restart.
        :param new_instance_profile_name: The name of the new profile to associate with
                                          the specified instance.
        :param profile_association_id: The ID of the existing profile association for the
                                       instance.
        """
        try:
            self.ec2_client.replace_iam_instance_profile_association(
                IamInstanceProfile={"Name": new_instance_profile_name},
                AssociationId=profile_association_id,
            )
            log.info(
                "Replaced instance profile for association %s with profile %s.",
                profile_association_id,
                new_instance_profile_name,
            )
            time.sleep(5)

            self.ec2_client.reboot_instances(InstanceIds=[instance_id])
            log.info("Rebooting instance %s.", instance_id)
            waiter = self.ec2_client.get_waiter("instance_running")
            log.info("Waiting for instance %s to be running.", instance_id)
            waiter.wait(InstanceIds=[instance_id])
            log.info("Instance %s is now running.", instance_id)

            self.ssm_client.send_command(
                InstanceIds=[instance_id],
                DocumentName="AWS-RunShellScript",
                Parameters={"commands": ["cd / && sudo python3 server.py 80"]},
            )
            log.info(f"Restarted the Python web server on instance '{instance_id}'.")
        except ClientError as err:
            log.error("Failed to replace instance profile.")
            error_code = err.response["Error"]["Code"]
            if error_code == "InvalidAssociationID.NotFound":
                log.error(
                    f"Association ID '{profile_association_id}' does not exist."
                    "Please check the association ID and try again."
                )
            if error_code == "InvalidInstanceId":
                log.error(
                    f"The specified instance ID '{instance_id}' does not exist or is not available for SSM. "
                    f"Please verify the instance ID and try again."
                )
            log.error(f"Full error:\n\t{err}")


    def delete_instance_profile(self, profile_name: str, role_name: str) -> None:
        """
        Detaches a role from an instance profile, detaches policies from the role,
        and deletes all the resources.

        :param profile_name: The name of the profile to delete.
        :param role_name: The name of the role to delete.
        """
        try:
            self.iam_client.remove_role_from_instance_profile(
                InstanceProfileName=profile_name, RoleName=role_name
            )
            self.iam_client.delete_instance_profile(InstanceProfileName=profile_name)
            log.info("Deleted instance profile %s.", profile_name)
            attached_policies = self.iam_client.list_attached_role_policies(
                RoleName=role_name
            )
            for pol in attached_policies["AttachedPolicies"]:
                self.iam_client.detach_role_policy(
                    RoleName=role_name, PolicyArn=pol["PolicyArn"]
                )
                if not pol["PolicyArn"].startswith("arn:aws:iam::aws"):
                    self.iam_client.delete_policy(PolicyArn=pol["PolicyArn"])
                log.info("Detached and deleted policy %s.", pol["PolicyName"])
            self.iam_client.delete_role(RoleName=role_name)
            log.info("Deleted role %s.", role_name)
        except ClientError as err:
            log.error(
                f"Couldn't delete instance profile {profile_name} or detach "
                f"policies and delete role {role_name}: {err}"
            )
            if err.response["Error"]["Code"] == "NoSuchEntity":
                log.info(
                    "Instance profile %s doesn't exist, nothing to do.", profile_name
                )


    def create_key_pair(self, key_pair_name: str) -> None:
        """
        Creates a new key pair.

        :param key_pair_name: The name of the key pair to create.
        """
        try:
            response = self.ec2_client.create_key_pair(KeyName=key_pair_name)
            with open(f"{key_pair_name}.pem", "w") as file:
                file.write(response["KeyMaterial"])
            chmod(f"{key_pair_name}.pem", 0o600)
            log.info("Created key pair %s.", key_pair_name)
        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            log.error(f"Failed to create key pair {key_pair_name}.")
            if error_code == "InvalidKeyPair.Duplicate":
                log.error(f"A key pair with the name '{key_pair_name}' already exists.")
            log.error(f"Full error:\n\t{err}")


    def delete_key_pair(self) -> None:
        """
        Deletes a key pair.
        """
        try:
            self.ec2_client.delete_key_pair(KeyName=self.key_pair_name)
            remove(f"{self.key_pair_name}.pem")
            log.info("Deleted key pair %s.", self.key_pair_name)
        except ClientError as err:
            log.error(f"Couldn't delete key pair '{self.key_pair_name}'.")
            log.error(f"Full error:\n\t{err}")
        except FileNotFoundError as err:
            log.info("Key pair %s doesn't exist, nothing to do.", self.key_pair_name)
            log.error(f"Full error:\n\t{err}")


    def create_template(
        self, server_startup_script_file: str, instance_policy_file: str
    ) -> Dict[str, Any]:
        """
        Creates an Amazon EC2 launch template to use with Amazon EC2 Auto Scaling. The
        launch template specifies a Bash script in its user data field that runs after
        the instance is started. This script installs Python packages and starts a
        Python web server on the instance.

        :param server_startup_script_file: The path to a Bash script file that is run
                                           when an instance starts.
        :param instance_policy_file: The path to a file that defines a permissions policy
                                     to create and attach to the instance profile.
        :return: Information about the newly created template.
        """
        template = {}
        try:
            # Create key pair and instance profile
            self.create_key_pair(self.key_pair_name)
            self.create_instance_profile(
                instance_policy_file,
                self.instance_policy_name,
                self.instance_role_name,
                self.instance_profile_name,
            )

            # Read the startup script
            with open(server_startup_script_file) as file:
                start_server_script = file.read()

            # Get the latest AMI ID
            ami_latest = self.ssm_client.get_parameter(Name=self.ami_param)
            ami_id = ami_latest["Parameter"]["Value"]

            # Create the launch template
            lt_response = self.ec2_client.create_launch_template(
                LaunchTemplateName=self.launch_template_name,
                LaunchTemplateData={
                    "InstanceType": self.inst_type,
                    "ImageId": ami_id,
                    "IamInstanceProfile": {"Name": self.instance_profile_name},
                    "UserData": base64.b64encode(
                        start_server_script.encode(encoding="utf-8")
                    ).decode(encoding="utf-8"),
                    "KeyName": self.key_pair_name,
                },
            )
            template = lt_response["LaunchTemplate"]
            log.info(
                f"Created launch template {self.launch_template_name} for AMI {ami_id} on {self.inst_type}."
            )
        except ClientError as err:
            log.error(f"Failed to create launch template {self.launch_template_name}.")
            error_code = err.response["Error"]["Code"]
            if error_code == "InvalidLaunchTemplateName.AlreadyExistsException":
                log.info(
                    f"Launch template {self.launch_template_name} already exists, nothing to do."
                )
            log.error(f"Full error:\n\t{err}")
        return template


    def delete_template(self):
        """
        Deletes a launch template.
        """
        try:
            self.ec2_client.delete_launch_template(
                LaunchTemplateName=self.launch_template_name
            )
            self.delete_instance_profile(
                self.instance_profile_name, self.instance_role_name
            )
            log.info("Launch template %s deleted.", self.launch_template_name)
        except ClientError as err:
            if (
                err.response["Error"]["Code"]
                == "InvalidLaunchTemplateName.NotFoundException"
            ):
                log.info(
                    "Launch template %s does not exist, nothing to do.",
                    self.launch_template_name,
                )
            log.error(f"Full error:\n\t{err}")


    def get_availability_zones(self) -> List[str]:
        """
        Gets a list of Availability Zones in the AWS Region of the Amazon EC2 client.

        :return: The list of Availability Zones for the client Region.
        """
        try:
            response = self.ec2_client.describe_availability_zones()
            zones = [zone["ZoneName"] for zone in response["AvailabilityZones"]]
            log.info(f"Retrieved {len(zones)} availability zones: {zones}.")
        except ClientError as err:
            log.error("Failed to retrieve availability zones.")
            log.error(f"Full error:\n\t{err}")
        else:
            return zones


    def create_autoscaling_group(self, group_size: int) -> List[str]:
        """
        Creates an EC2 Auto Scaling group with the specified size.

        :param group_size: The number of instances to set for the minimum and maximum in
                           the group.
        :return: The list of Availability Zones specified for the group.
        """
        try:
            zones = self.get_availability_zones()
            self.autoscaling_client.create_auto_scaling_group(
                AutoScalingGroupName=self.group_name,
                AvailabilityZones=zones,
                LaunchTemplate={
                    "LaunchTemplateName": self.launch_template_name,
                    "Version": "$Default",
                },
                MinSize=group_size,
                MaxSize=group_size,
            )
            log.info(
                f"Created EC2 Auto Scaling group {self.group_name} with availability zones {zones}."
            )
        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            if error_code == "AlreadyExists":
                log.info(
                    f"EC2 Auto Scaling group {self.group_name} already exists, nothing to do."
                )
            else:
                log.error(f"Failed to create EC2 Auto Scaling group {self.group_name}.")
                log.error(f"Full error:\n\t{err}")
        else:
            return zones


    def get_instances(self) -> List[str]:
        """
        Gets data about the instances in the EC2 Auto Scaling group.

        :return: A list of instance IDs in the Auto Scaling group.
        """
        try:
            as_response = self.autoscaling_client.describe_auto_scaling_groups(
                AutoScalingGroupNames=[self.group_name]
            )
            instance_ids = [
                i["InstanceId"]
                for i in as_response["AutoScalingGroups"][0]["Instances"]
            ]
            log.info(
                f"Retrieved {len(instance_ids)} instances for Auto Scaling group {self.group_name}."
            )
        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            log.error(
                f"Failed to retrieve instances for Auto Scaling group {self.group_name}."
            )
            if error_code == "ResourceNotFound":
                log.error(f"The Auto Scaling group '{self.group_name}' does not exist.")
            log.error(f"Full error:\n\t{err}")
        else:
            return instance_ids


    def terminate_instance(self, instance_id: str, decrementsetting=False) -> None:
        """
        Terminates an instance in an EC2 Auto Scaling group. After an instance is
        terminated, it can no longer be accessed.

        :param instance_id: The ID of the instance to terminate.
        :param decrementsetting: If True, do not replace terminated instances.
        """
        try:
            self.autoscaling_client.terminate_instance_in_auto_scaling_group(
                InstanceId=instance_id,
                ShouldDecrementDesiredCapacity=decrementsetting,
            )
            log.info("Terminated instance %s.", instance_id)

            # Adding a waiter to ensure the instance is terminated
            waiter = self.ec2_client.get_waiter("instance_terminated")
            log.info("Waiting for instance %s to be terminated...", instance_id)
            waiter.wait(InstanceIds=[instance_id])
            log.info(
                f"Instance '{instance_id}' has been terminated and will be replaced."
            )

        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            log.error(f"Failed to terminate instance '{instance_id}'.")
            if error_code == "ScalingActivityInProgressFault":
                log.error(
                    "Scaling activity is currently in progress. "
                    "Wait for the scaling activity to complete before attempting to terminate the instance again."
                )
            elif error_code == "ResourceContentionFault":
                log.error(
                    "The request failed due to a resource contention issue. "
                    "Ensure that no conflicting operations are being performed on the resource."
                )
            log.error(f"Full error:\n\t{err}")

    def attach_load_balancer_target_group(
        self, lb_target_group: Dict[str, Any]
    ) -> None:
        """
        Attaches an Elastic Load Balancing (ELB) target group to this EC2 Auto Scaling group.
        The target group specifies how the load balancer forwards requests to the instances
        in the group.

        :param lb_target_group: Data about the ELB target group to attach.
        """
        try:
            self.autoscaling_client.attach_load_balancer_target_groups(
                AutoScalingGroupName=self.group_name,
                TargetGroupARNs=[lb_target_group["TargetGroupArn"]],
            )
            log.info(
                "Attached load balancer target group %s to auto scaling group %s.",
                lb_target_group["TargetGroupName"],
                self.group_name,
            )
        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            log.error(
                f"Failed to attach load balancer target group '{lb_target_group['TargetGroupName']}'."
            )
            if error_code == "ResourceContentionFault":
                log.error(
                    "The request failed due to a resource contention issue. "
                    "Ensure that no conflicting operations are being performed on the resource."
                )
            elif error_code == "ServiceLinkedRoleFailure":
                log.error(
                    "The operation failed because the service-linked role is not ready or does not exist. "
                    "Check that the service-linked role exists and is correctly configured."
                )
            log.error(f"Full error:\n\t{err}")


    def delete_autoscaling_group(self, group_name: str) -> None:
        """
        Terminates all instances in the group, then deletes the EC2 Auto Scaling group.

        :param group_name: The name of the group to delete.
        """
        try:
            response = self.autoscaling_client.describe_auto_scaling_groups(
                AutoScalingGroupNames=[group_name]
            )
            groups = response.get("AutoScalingGroups", [])
            if len(groups) > 0:
                self.autoscaling_client.update_auto_scaling_group(
                    AutoScalingGroupName=group_name, MinSize=0
                )
                instance_ids = [inst["InstanceId"] for inst in groups[0]["Instances"]]
                for inst_id in instance_ids:
                    self.terminate_instance(inst_id)

                # Wait for all instances to be terminated
                if instance_ids:
                    waiter = self.ec2_client.get_waiter("instance_terminated")
                    log.info("Waiting for all instances to be terminated...")
                    waiter.wait(InstanceIds=instance_ids)
                    log.info("All instances have been terminated.")
            else:
                log.info(f"No groups found named '{group_name}'! Nothing to do.")
        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            log.error(f"Failed to delete Auto Scaling group '{group_name}'.")
            if error_code == "ScalingActivityInProgressFault":
                log.error(
                    "Scaling activity is currently in progress. "
                    "Wait for the scaling activity to complete before attempting to delete the group again."
                )
            elif error_code == "ResourceContentionFault":
                log.error(
                    "The request failed due to a resource contention issue. "
                    "Ensure that no conflicting operations are being performed on the group."
                )
            log.error(f"Full error:\n\t{err}")


    def get_default_vpc(self) -> Dict[str, Any]:
        """
        Gets the default VPC for the account.

        :return: Data about the default VPC.
        """
        try:
            response = self.ec2_client.describe_vpcs(
                Filters=[{"Name": "is-default", "Values": ["true"]}]
            )
        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            log.error("Failed to retrieve the default VPC.")
            if error_code == "UnauthorizedOperation":
                log.error(
                    "You do not have the necessary permissions to describe VPCs. "
                    "Ensure that your AWS IAM user or role has the correct permissions."
                )
            elif error_code == "InvalidParameterValue":
                log.error(
                    "One or more parameters are invalid. Check the request parameters."
                )

            log.error(f"Full error:\n\t{err}")
        else:
            if "Vpcs" in response and response["Vpcs"]:
                log.info(f"Retrieved default VPC: {response['Vpcs'][0]['VpcId']}")
                return response["Vpcs"][0]
            else:
                pass


    def verify_inbound_port(
        self, vpc: Dict[str, Any], port: int, ip_address: str
    ) -> Tuple[Dict[str, Any], bool]:
        """
        Verify the default security group of the specified VPC allows ingress from this
        computer. This can be done by allowing ingress from this computer's IP
        address. In some situations, such as connecting from a corporate network, you
        must instead specify a prefix list ID. You can also temporarily open the port to
        any IP address while running this example. If you do, be sure to remove public
        access when you're done.

        :param vpc: The VPC used by this example.
        :param port: The port to verify.
        :param ip_address: This computer's IP address.
        :return: The default security group of the specified VPC, and a value that indicates
                 whether the specified port is open.
        """
        try:
            response = self.ec2_client.describe_security_groups(
                Filters=[
                    {"Name": "group-name", "Values": ["default"]},
                    {"Name": "vpc-id", "Values": [vpc["VpcId"]]},
                ]
            )
            sec_group = response["SecurityGroups"][0]
            port_is_open = False
            log.info(f"Found default security group {sec_group['GroupId']}.")

            for ip_perm in sec_group["IpPermissions"]:
                if ip_perm.get("FromPort", 0) == port:
                    log.info(f"Found inbound rule: {ip_perm}")
                    for ip_range in ip_perm["IpRanges"]:
                        cidr = ip_range.get("CidrIp", "")
                        if cidr.startswith(ip_address) or cidr == "0.0.0.0/0":
                            port_is_open = True
                    if ip_perm["PrefixListIds"]:
                        port_is_open = True
                    if not port_is_open:
                        log.info(
                            f"The inbound rule does not appear to be open to either this computer's IP "
                            f"address of {ip_address}, to all IP addresses (0.0.0.0/0), or to a prefix list ID."
                        )
                    else:
                        break
        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            log.error(
                f"Failed to verify inbound rule for port {port} for VPC {vpc['VpcId']}."
            )
            if error_code == "InvalidVpcID.NotFound":
                log.error(
                    f"The specified VPC ID '{vpc['VpcId']}' does not exist. Please check the VPC ID."
                )
            log.error(f"Full error:\n\t{err}")
        else:
            return sec_group, port_is_open


    def open_inbound_port(self, sec_group_id: str, port: int, ip_address: str) -> None:
        """
        Add an ingress rule to the specified security group that allows access on the
        specified port from the specified IP address.

        :param sec_group_id: The ID of the security group to modify.
        :param port: The port to open.
        :param ip_address: The IP address that is granted access.
        """
        try:
            self.ec2_client.authorize_security_group_ingress(
                GroupId=sec_group_id,
                CidrIp=f"{ip_address}/32",
                FromPort=port,
                ToPort=port,
                IpProtocol="tcp",
            )
            log.info(
                "Authorized ingress to %s on port %s from %s.",
                sec_group_id,
                port,
                ip_address,
            )
        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            log.error(
                f"Failed to authorize ingress to security group '{sec_group_id}' on port {port} from {ip_address}."
            )
            if error_code == "InvalidGroupId.Malformed":
                log.error(
                    "The security group ID is malformed. "
                    "Please verify that the security group ID is correct."
                )
            elif error_code == "InvalidPermission.Duplicate":
                log.error(
                    "The specified rule already exists in the security group. "
                    "Check the existing rules for this security group."
                )
            log.error(f"Full error:\n\t{err}")


    def get_subnets(self, vpc_id: str, zones: List[str] = None) -> List[Dict[str, Any]]:
        """
        Gets the default subnets in a VPC for a specified list of Availability Zones.

        :param vpc_id: The ID of the VPC to look up.
        :param zones: The list of Availability Zones to look up.
        :return: The list of subnets found.
        """
        # Ensure that 'zones' is a list, even if None is passed
        if zones is None:
            zones = []
        try:
            paginator = self.ec2_client.get_paginator("describe_subnets")
            page_iterator = paginator.paginate(
                Filters=[
                    {"Name": "vpc-id", "Values": [vpc_id]},
                    {"Name": "availability-zone", "Values": zones},
                    {"Name": "default-for-az", "Values": ["true"]},
                ]
            )

            subnets = []
            for page in page_iterator:
                subnets.extend(page["Subnets"])

            log.info("Found %s subnets for the specified zones.", len(subnets))
            return subnets
        except ClientError as err:
            log.error(
                f"Failed to retrieve subnets for VPC '{vpc_id}' in zones {zones}."
            )
            error_code = err.response["Error"]["Code"]
            if error_code == "InvalidVpcID.NotFound":
                log.error(
                    "The specified VPC ID does not exist. "
                    "Please check the VPC ID and try again."
                )
            # Add more error-specific handling as needed
            log.error(f"Full error:\n\t{err}")
```
Crea una classe che racchiuda le operazioni di Elastic Load Balancing.  

```
class ElasticLoadBalancerWrapper:
    """Encapsulates Elastic Load Balancing (ELB) actions."""

    def __init__(self, elb_client: boto3.client):
        """
        Initializes the LoadBalancer class with the necessary parameters.
        """
        self.elb_client = elb_client


    def create_target_group(
        self, target_group_name: str, protocol: str, port: int, vpc_id: str
    ) -> Dict[str, Any]:
        """
        Creates an Elastic Load Balancing target group. The target group specifies how
        the load balancer forwards requests to instances in the group and how instance
        health is checked.

        To speed up this demo, the health check is configured with shortened times and
        lower thresholds. In production, you might want to decrease the sensitivity of
        your health checks to avoid unwanted failures.

        :param target_group_name: The name of the target group to create.
        :param protocol: The protocol to use to forward requests, such as 'HTTP'.
        :param port: The port to use to forward requests, such as 80.
        :param vpc_id: The ID of the VPC in which the load balancer exists.
        :return: Data about the newly created target group.
        """
        try:
            response = self.elb_client.create_target_group(
                Name=target_group_name,
                Protocol=protocol,
                Port=port,
                HealthCheckPath="/healthcheck",
                HealthCheckIntervalSeconds=10,
                HealthCheckTimeoutSeconds=5,
                HealthyThresholdCount=2,
                UnhealthyThresholdCount=2,
                VpcId=vpc_id,
            )
            target_group = response["TargetGroups"][0]
            log.info(f"Created load balancing target group '{target_group_name}'.")
            return target_group
        except ClientError as err:
            log.error(
                f"Couldn't create load balancing target group '{target_group_name}'."
            )
            error_code = err.response["Error"]["Code"]

            if error_code == "DuplicateTargetGroupName":
                log.error(
                    f"Target group name {target_group_name} already exists. "
                    "Check if the target group already exists."
                    "Consider using a different name or deleting the existing target group if appropriate."
                )
            elif error_code == "TooManyTargetGroups":
                log.error(
                    "Too many target groups exist in the account. "
                    "Consider deleting unused target groups to create space for new ones."
                )
            log.error(f"Full error:\n\t{err}")


    def delete_target_group(self, target_group_name) -> None:
        """
        Deletes the target group.
        """
        try:
            # Describe the target group to get its ARN
            response = self.elb_client.describe_target_groups(Names=[target_group_name])
            tg_arn = response["TargetGroups"][0]["TargetGroupArn"]

            # Delete the target group
            self.elb_client.delete_target_group(TargetGroupArn=tg_arn)
            log.info("Deleted load balancing target group %s.", target_group_name)

            # Use a custom waiter to wait until the target group is no longer available
            self.wait_for_target_group_deletion(self.elb_client, tg_arn)
            log.info("Target group %s successfully deleted.", target_group_name)

        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            log.error(f"Failed to delete target group '{target_group_name}'.")
            if error_code == "TargetGroupNotFound":
                log.error(
                    "Load balancer target group either already deleted or never existed. "
                    "Verify the name and check that the resource exists in the AWS Console."
                )
            elif error_code == "ResourceInUseException":
                log.error(
                    "Target group still in use by another resource. "
                    "Ensure that the target group is no longer associated with any load balancers or resources.",
                )
            log.error(f"Full error:\n\t{err}")

    def wait_for_target_group_deletion(
        self, elb_client, target_group_arn, max_attempts=10, delay=30
    ):
        for attempt in range(max_attempts):
            try:
                elb_client.describe_target_groups(TargetGroupArns=[target_group_arn])
                print(
                    f"Attempt {attempt + 1}: Target group {target_group_arn} still exists."
                )
            except ClientError as e:
                if e.response["Error"]["Code"] == "TargetGroupNotFound":
                    print(
                        f"Target group {target_group_arn} has been successfully deleted."
                    )
                    return
                else:
                    raise
            time.sleep(delay)
        raise TimeoutError(
            f"Target group {target_group_arn} was not deleted after {max_attempts * delay} seconds."
        )


    def create_load_balancer(
        self,
        load_balancer_name: str,
        subnet_ids: List[str],
    ) -> Dict[str, Any]:
        """
        Creates an Elastic Load Balancing load balancer that uses the specified subnets
        and forwards requests to the specified target group.

        :param load_balancer_name: The name of the load balancer to create.
        :param subnet_ids: A list of subnets to associate with the load balancer.
        :return: Data about the newly created load balancer.
        """
        try:
            response = self.elb_client.create_load_balancer(
                Name=load_balancer_name, Subnets=subnet_ids
            )
            load_balancer = response["LoadBalancers"][0]
            log.info(f"Created load balancer '{load_balancer_name}'.")

            waiter = self.elb_client.get_waiter("load_balancer_available")
            log.info(
                f"Waiting for load balancer '{load_balancer_name}' to be available..."
            )
            waiter.wait(Names=[load_balancer_name])
            log.info(f"Load balancer '{load_balancer_name}' is now available!")

        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            log.error(
                f"Failed to create load balancer '{load_balancer_name}'. Error code: {error_code}, Message: {err.response['Error']['Message']}"
            )

            if error_code == "DuplicateLoadBalancerNameException":
                log.error(
                    f"A load balancer with the name '{load_balancer_name}' already exists. "
                    "Load balancer names must be unique within the AWS region. "
                    "Please choose a different name and try again."
                )
            if error_code == "TooManyLoadBalancersException":
                log.error(
                    "The maximum number of load balancers has been reached in this account and region. "
                    "You can delete unused load balancers or request an increase in the service quota from AWS Support."
                )
            log.error(f"Full error:\n\t{err}")
        else:
            return load_balancer


    def create_listener(
        self,
        load_balancer_name: str,
        target_group: Dict[str, Any],
    ) -> Dict[str, Any]:
        """
        Creates a listener for the specified load balancer that forwards requests to the
        specified target group.

        :param load_balancer_name: The name of the load balancer to create a listener for.
        :param target_group: An existing target group that is added as a listener to the
                             load balancer.
        :return: Data about the newly created listener.
        """
        try:
            # Retrieve the load balancer ARN
            load_balancer_response = self.elb_client.describe_load_balancers(
                Names=[load_balancer_name]
            )
            load_balancer_arn = load_balancer_response["LoadBalancers"][0][
                "LoadBalancerArn"
            ]

            # Create the listener
            response = self.elb_client.create_listener(
                LoadBalancerArn=load_balancer_arn,
                Protocol=target_group["Protocol"],
                Port=target_group["Port"],
                DefaultActions=[
                    {
                        "Type": "forward",
                        "TargetGroupArn": target_group["TargetGroupArn"],
                    }
                ],
            )
            log.info(
                f"Created listener to forward traffic from load balancer '{load_balancer_name}' to target group '{target_group['TargetGroupName']}'."
            )
            return response["Listeners"][0]
        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            log.error(
                f"Failed to add a listener on '{load_balancer_name}' for target group '{target_group['TargetGroupName']}'."
            )

            if error_code == "ListenerNotFoundException":
                log.error(
                    f"The listener could not be found for the load balancer '{load_balancer_name}'. "
                    "Please check the load balancer name and target group configuration."
                )
            if error_code == "InvalidConfigurationRequestException":
                log.error(
                    f"The configuration provided for the listener on load balancer '{load_balancer_name}' is invalid. "
                    "Please review the provided protocol, port, and target group settings."
                )
            log.error(f"Full error:\n\t{err}")


    def delete_load_balancer(self, load_balancer_name) -> None:
        """
        Deletes a load balancer.

        :param load_balancer_name: The name of the load balancer to delete.
        """
        try:
            response = self.elb_client.describe_load_balancers(
                Names=[load_balancer_name]
            )
            lb_arn = response["LoadBalancers"][0]["LoadBalancerArn"]
            self.elb_client.delete_load_balancer(LoadBalancerArn=lb_arn)
            log.info("Deleted load balancer %s.", load_balancer_name)
            waiter = self.elb_client.get_waiter("load_balancers_deleted")
            log.info("Waiting for load balancer to be deleted...")
            waiter.wait(Names=[load_balancer_name])
        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            log.error(
                f"Couldn't delete load balancer '{load_balancer_name}'. Error code: {error_code}, Message: {err.response['Error']['Message']}"
            )

            if error_code == "LoadBalancerNotFoundException":
                log.error(
                    f"The load balancer '{load_balancer_name}' does not exist. "
                    "Please check the name and try again."
                )
            log.error(f"Full error:\n\t{err}")


    def get_endpoint(self, load_balancer_name) -> str:
        """
        Gets the HTTP endpoint of the load balancer.

        :return: The endpoint.
        """
        try:
            response = self.elb_client.describe_load_balancers(
                Names=[load_balancer_name]
            )
            return response["LoadBalancers"][0]["DNSName"]
        except ClientError as err:
            log.error(
                f"Couldn't get the endpoint for load balancer {load_balancer_name}"
            )
            error_code = err.response["Error"]["Code"]
            if error_code == "LoadBalancerNotFoundException":
                log.error(
                    "Verify load balancer name and ensure it exists in the AWS console."
                )
            log.error(f"Full error:\n\t{err}")

    @staticmethod
    def verify_load_balancer_endpoint(endpoint) -> bool:
        """
        Verify this computer can successfully send a GET request to the load balancer endpoint.

        :param endpoint: The endpoint to verify.
        :return: True if the GET request is successful, False otherwise.
        """
        retries = 3
        verified = False
        while not verified and retries > 0:
            try:
                lb_response = requests.get(f"http://{endpoint}")
                log.info(
                    "Got response %s from load balancer endpoint.",
                    lb_response.status_code,
                )
                if lb_response.status_code == 200:
                    verified = True
                else:
                    retries = 0
            except requests.exceptions.ConnectionError:
                log.info(
                    "Got connection error from load balancer endpoint, retrying..."
                )
                retries -= 1
                time.sleep(10)
        return verified

    def check_target_health(self, target_group_name: str) -> List[Dict[str, Any]]:
        """
        Checks the health of the instances in the target group.

        :return: The health status of the target group.
        """
        try:
            tg_response = self.elb_client.describe_target_groups(
                Names=[target_group_name]
            )
            health_response = self.elb_client.describe_target_health(
                TargetGroupArn=tg_response["TargetGroups"][0]["TargetGroupArn"]
            )
        except ClientError as err:
            log.error(f"Couldn't check health of {target_group_name} target(s).")
            error_code = err.response["Error"]["Code"]
            if error_code == "LoadBalancerNotFoundException":
                log.error(
                    "Load balancer associated with the target group was not found. "
                    "Ensure the load balancer exists, is in the correct AWS region, and "
                    "that you have the necessary permissions to access it.",
                )
            elif error_code == "TargetGroupNotFoundException":
                log.error(
                    "Target group was not found. "
                    "Verify the target group name, check that it exists in the correct region, "
                    "and ensure it has not been deleted or created in a different account.",
                )
            log.error(f"Full error:\n\t{err}")
        else:
            return health_response["TargetHealthDescriptions"]
```
Crea una classe che utilizzi DynamoDB per simulare un servizio di raccomandazione.  

```
class RecommendationService:
    """
    Encapsulates a DynamoDB table to use as a service that recommends books, movies,
    and songs.
    """

    def __init__(self, table_name: str, dynamodb_client: boto3.client):
        """
        Initializes the RecommendationService class with the necessary parameters.

        :param table_name: The name of the DynamoDB recommendations table.
        :param dynamodb_client: A Boto3 DynamoDB client.
        """
        self.table_name = table_name
        self.dynamodb_client = dynamodb_client

    def create(self) -> Dict[str, Any]:
        """
        Creates a DynamoDB table to use as a recommendation service. The table has a
        hash key named 'MediaType' that defines the type of media recommended, such as
        Book or Movie, and a range key named 'ItemId' that, combined with the MediaType,
        forms a unique identifier for the recommended item.

        :return: Data about the newly created table.
        :raises RecommendationServiceError: If the table creation fails.
        """
        try:
            response = self.dynamodb_client.create_table(
                TableName=self.table_name,
                AttributeDefinitions=[
                    {"AttributeName": "MediaType", "AttributeType": "S"},
                    {"AttributeName": "ItemId", "AttributeType": "N"},
                ],
                KeySchema=[
                    {"AttributeName": "MediaType", "KeyType": "HASH"},
                    {"AttributeName": "ItemId", "KeyType": "RANGE"},
                ],
                ProvisionedThroughput={"ReadCapacityUnits": 5, "WriteCapacityUnits": 5},
            )
            log.info("Creating table %s...", self.table_name)
            waiter = self.dynamodb_client.get_waiter("table_exists")
            waiter.wait(TableName=self.table_name)
            log.info("Table %s created.", self.table_name)
        except ClientError as err:
            if err.response["Error"]["Code"] == "ResourceInUseException":
                log.info("Table %s exists, nothing to be done.", self.table_name)
            else:
                raise RecommendationServiceError(
                    self.table_name, f"ClientError when creating table: {err}."
                )
        else:
            return response

    def populate(self, data_file: str) -> None:
        """
        Populates the recommendations table from a JSON file.

        :param data_file: The path to the data file.
        :raises RecommendationServiceError: If the table population fails.
        """
        try:
            with open(data_file) as data:
                items = json.load(data)
            batch = [{"PutRequest": {"Item": item}} for item in items]
            self.dynamodb_client.batch_write_item(RequestItems={self.table_name: batch})
            log.info(
                "Populated table %s with items from %s.", self.table_name, data_file
            )
        except ClientError as err:
            raise RecommendationServiceError(
                self.table_name, f"Couldn't populate table from {data_file}: {err}"
            )

    def destroy(self) -> None:
        """
        Deletes the recommendations table.

        :raises RecommendationServiceError: If the table deletion fails.
        """
        try:
            self.dynamodb_client.delete_table(TableName=self.table_name)
            log.info("Deleting table %s...", self.table_name)
            waiter = self.dynamodb_client.get_waiter("table_not_exists")
            waiter.wait(TableName=self.table_name)
            log.info("Table %s deleted.", self.table_name)
        except ClientError as err:
            if err.response["Error"]["Code"] == "ResourceNotFoundException":
                log.info("Table %s does not exist, nothing to do.", self.table_name)
            else:
                raise RecommendationServiceError(
                    self.table_name, f"ClientError when deleting table: {err}."
                )
```
Crea una classe che racchiuda le operazioni di Systems Manager.  

```
class ParameterHelper:
    """
    Encapsulates Systems Manager parameters. This example uses these parameters to drive
    the demonstration of resilient architecture, such as failure of a dependency or
    how the service responds to a health check.
    """

    table: str = "doc-example-resilient-architecture-table"
    failure_response: str = "doc-example-resilient-architecture-failure-response"
    health_check: str = "doc-example-resilient-architecture-health-check"

    def __init__(self, table_name: str, ssm_client: boto3.client):
        """
        Initializes the ParameterHelper class with the necessary parameters.

        :param table_name: The name of the DynamoDB table that is used as a recommendation
                           service.
        :param ssm_client: A Boto3 Systems Manager client.
        """
        self.ssm_client = ssm_client
        self.table_name = table_name

    def reset(self) -> None:
        """
        Resets the Systems Manager parameters to starting values for the demo.
        These are the name of the DynamoDB recommendation table, no response when a
        dependency fails, and shallow health checks.
        """
        self.put(self.table, self.table_name)
        self.put(self.failure_response, "none")
        self.put(self.health_check, "shallow")

    def put(self, name: str, value: str) -> None:
        """
        Sets the value of a named Systems Manager parameter.

        :param name: The name of the parameter.
        :param value: The new value of the parameter.
        :raises ParameterHelperError: If the parameter value cannot be set.
        """
        try:
            self.ssm_client.put_parameter(
                Name=name, Value=value, Overwrite=True, Type="String"
            )
            log.info("Setting parameter %s to '%s'.", name, value)
        except ClientError as err:
            error_code = err.response["Error"]["Code"]
            log.error(f"Failed to set parameter {name}.")
            if error_code == "ParameterLimitExceeded":
                log.error(
                    "The parameter limit has been exceeded. "
                    "Consider deleting unused parameters or request a limit increase."
                )
            elif error_code == "ParameterAlreadyExists":
                log.error(
                    "The parameter already exists and overwrite is set to False. "
                    "Use Overwrite=True to update the parameter."
                )
            log.error(f"Full error:\n\t{err}")
```
+ Per informazioni dettagliate sull’API, consulta i seguenti argomenti nella *documentazione di riferimento dell’API AWS SDK per Python (Boto3)*.
  + [AttachLoadBalancerTargetGroups](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/AttachLoadBalancerTargetGroups)
  + [CreateAutoScalingGroup](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/CreateAutoScalingGroup)
  + [CreateInstanceProfile](https://docs.aws.amazon.com/goto/boto3/iam-2010-05-08/CreateInstanceProfile)
  + [CreateLaunchTemplate](https://docs.aws.amazon.com/goto/boto3/ec2-2016-11-15/CreateLaunchTemplate)
  + [CreateListener](https://docs.aws.amazon.com/goto/boto3/elasticloadbalancingv2-2015-12-01/CreateListener)
  + [CreateLoadBalancer](https://docs.aws.amazon.com/goto/boto3/elasticloadbalancingv2-2015-12-01/CreateLoadBalancer)
  + [CreateTargetGroup](https://docs.aws.amazon.com/goto/boto3/elasticloadbalancingv2-2015-12-01/CreateTargetGroup)
  + [DeleteAutoScalingGroup](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/DeleteAutoScalingGroup)
  + [DeleteInstanceProfile](https://docs.aws.amazon.com/goto/boto3/iam-2010-05-08/DeleteInstanceProfile)
  + [DeleteLaunchTemplate](https://docs.aws.amazon.com/goto/boto3/ec2-2016-11-15/DeleteLaunchTemplate)
  + [DeleteLoadBalancer](https://docs.aws.amazon.com/goto/boto3/elasticloadbalancingv2-2015-12-01/DeleteLoadBalancer)
  + [DeleteTargetGroup](https://docs.aws.amazon.com/goto/boto3/elasticloadbalancingv2-2015-12-01/DeleteTargetGroup)
  + [DescribeAutoScalingGroups](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/DescribeAutoScalingGroups)
  + [DescribeAvailabilityZones](https://docs.aws.amazon.com/goto/boto3/ec2-2016-11-15/DescribeAvailabilityZones)
  + [DescribeIamInstanceProfileAssociations](https://docs.aws.amazon.com/goto/boto3/ec2-2016-11-15/DescribeIamInstanceProfileAssociations)
  + [DescribeInstances](https://docs.aws.amazon.com/goto/boto3/ec2-2016-11-15/DescribeInstances)
  + [DescribeLoadBalancers](https://docs.aws.amazon.com/goto/boto3/elasticloadbalancingv2-2015-12-01/DescribeLoadBalancers)
  + [DescribeSubnets](https://docs.aws.amazon.com/goto/boto3/ec2-2016-11-15/DescribeSubnets)
  + [DescribeTargetGroups](https://docs.aws.amazon.com/goto/boto3/elasticloadbalancingv2-2015-12-01/DescribeTargetGroups)
  + [DescribeTargetHealth](https://docs.aws.amazon.com/goto/boto3/elasticloadbalancingv2-2015-12-01/DescribeTargetHealth)
  + [DescribeVpcs](https://docs.aws.amazon.com/goto/boto3/ec2-2016-11-15/DescribeVpcs)
  + [RebootInstances](https://docs.aws.amazon.com/goto/boto3/ec2-2016-11-15/RebootInstances)
  + [ReplaceIamInstanceProfileAssociation](https://docs.aws.amazon.com/goto/boto3/ec2-2016-11-15/ReplaceIamInstanceProfileAssociation)
  + [TerminateInstanceInAutoScalingGroup](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/TerminateInstanceInAutoScalingGroup)
  + [UpdateAutoScalingGroup](https://docs.aws.amazon.com/goto/boto3/autoscaling-2011-01-01/UpdateAutoScalingGroup)

------