

# Usar `CreateDBInstance` com o AWS SDK ou a CLI
<a name="example_rds_CreateDBInstance_section"></a>

Os exemplos de código a seguir mostram como usar o `CreateDBInstance`.

Exemplos de ações são trechos de código de programas maiores e devem ser executados em contexto. É possível ver essa ação no contexto no seguinte exemplo de código: 
+  [Conheça os conceitos básicos](example_rds_Scenario_GetStartedInstances_section.md) 

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

**SDK para .NET**  
 Há mais no GitHub. Encontre o exemplo completo e saiba como configurar e executar no [AWSCode Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv3/RDS#code-examples). 

```
    /// <summary>
    /// Create an RDS DB instance with a particular set of properties. Use the action DescribeDBInstancesAsync
    /// to determine when the DB instance is ready to use.
    /// </summary>
    /// <param name="dbName">Name for the DB instance.</param>
    /// <param name="dbInstanceIdentifier">DB instance identifier.</param>
    /// <param name="parameterGroupName">DB parameter group to associate with the instance.</param>
    /// <param name="dbEngine">The engine for the DB instance.</param>
    /// <param name="dbEngineVersion">Version for the DB instance.</param>
    /// <param name="instanceClass">Class for the DB instance.</param>
    /// <param name="allocatedStorage">The amount of storage in gibibytes (GiB) to allocate to the DB instance.</param>
    /// <param name="adminName">Admin user name.</param>
    /// <param name="adminPassword">Admin user password.</param>
    /// <returns>DB instance object.</returns>
    public async Task<DBInstance> CreateDBInstance(string dbName, string dbInstanceIdentifier,
        string parameterGroupName, string dbEngine, string dbEngineVersion,
        string instanceClass, int allocatedStorage, string adminName, string adminPassword)
    {
        var response = await _amazonRDS.CreateDBInstanceAsync(
            new CreateDBInstanceRequest()
            {
                DBName = dbName,
                DBInstanceIdentifier = dbInstanceIdentifier,
                DBParameterGroupName = parameterGroupName,
                Engine = dbEngine,
                EngineVersion = dbEngineVersion,
                DBInstanceClass = instanceClass,
                AllocatedStorage = allocatedStorage,
                MasterUsername = adminName,
                MasterUserPassword = adminPassword
            });

        return response.DBInstance;
    }
```
+  Consulte detalhes da API em [CreateDBInstance](https://docs.aws.amazon.com/goto/DotNetSDKV3/rds-2014-10-31/CreateDBInstance) na *Referência da API AWS SDK para .NET*. 

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

**SDK para C\$1\$1**  
 Há mais no GitHub. Encontre o exemplo completo e saiba como configurar e executar no [AWSCode Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/rds#code-examples). 

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

    Aws::RDS::RDSClient client(clientConfig);

        Aws::RDS::Model::CreateDBInstanceRequest request;
        request.SetDBName(DB_NAME);
        request.SetDBInstanceIdentifier(DB_INSTANCE_IDENTIFIER);
        request.SetDBParameterGroupName(PARAMETER_GROUP_NAME);
        request.SetEngine(engineVersion.GetEngine());
        request.SetEngineVersion(engineVersion.GetEngineVersion());
        request.SetDBInstanceClass(dbInstanceClass);
        request.SetStorageType(DB_STORAGE_TYPE);
        request.SetAllocatedStorage(DB_ALLOCATED_STORAGE);
        request.SetMasterUsername(administratorName);
        request.SetMasterUserPassword(administratorPassword);

        Aws::RDS::Model::CreateDBInstanceOutcome outcome =
                client.CreateDBInstance(request);

        if (outcome.IsSuccess()) {
            std::cout << "The DB instance creation has started."
                      << std::endl;
        }
        else {
            std::cerr << "Error with RDS::CreateDBInstance. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
            cleanUpResources(PARAMETER_GROUP_NAME, "", client);
            return false;
        }
```
+  Consulte detalhes da API em [CreateDBInstance](https://docs.aws.amazon.com/goto/SdkForCpp/rds-2014-10-31/CreateDBInstance) na *Referência da API AWS SDK para C\$1\$1*. 

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

**AWS CLI**  
**Como criar uma instância de banco de dados**  
O exemplo de `create-db-instance` a seguir usa as opções necessárias para iniciar uma nova instância de banco de dados.  

```
aws rds create-db-instance \
    --db-instance-identifier test-mysql-instance \
    --db-instance-class db.t3.micro \
    --engine mysql \
    --master-username admin \
    --master-user-password secret99 \
    --allocated-storage 20
```
Resultado:  

```
{
    "DBInstance": {
        "DBInstanceIdentifier": "test-mysql-instance",
        "DBInstanceClass": "db.t3.micro",
        "Engine": "mysql",
        "DBInstanceStatus": "creating",
        "MasterUsername": "admin",
        "AllocatedStorage": 20,
        "PreferredBackupWindow": "12:55-13:25",
        "BackupRetentionPeriod": 1,
        "DBSecurityGroups": [],
        "VpcSecurityGroups": [
            {
                "VpcSecurityGroupId": "sg-12345abc",
                "Status": "active"
            }
        ],
        "DBParameterGroups": [
            {
                "DBParameterGroupName": "default.mysql5.7",
                "ParameterApplyStatus": "in-sync"
            }
        ],
        "DBSubnetGroup": {
            "DBSubnetGroupName": "default",
            "DBSubnetGroupDescription": "default",
            "VpcId": "vpc-2ff2ff2f",
            "SubnetGroupStatus": "Complete",
            "Subnets": [
                {
                    "SubnetIdentifier": "subnet-########",
                    "SubnetAvailabilityZone": {
                        "Name": "us-west-2c"
                    },
                    "SubnetStatus": "Active"
                },
                {
                    "SubnetIdentifier": "subnet-########",
                    "SubnetAvailabilityZone": {
                        "Name": "us-west-2d"
                    },
                    "SubnetStatus": "Active"
                },
                {
                    "SubnetIdentifier": "subnet-########",
                    "SubnetAvailabilityZone": {
                        "Name": "us-west-2a"
                    },
                    "SubnetStatus": "Active"
                },
                {
                    "SubnetIdentifier": "subnet-########",
                    "SubnetAvailabilityZone": {
                        "Name": "us-west-2b"
                    },
                    "SubnetStatus": "Active"
                }
            ]
        },
        "PreferredMaintenanceWindow": "sun:08:07-sun:08:37",
        "PendingModifiedValues": {
            "MasterUserPassword": "****"
        },
        "MultiAZ": false,
        "EngineVersion": "5.7.22",
        "AutoMinorVersionUpgrade": true,
        "ReadReplicaDBInstanceIdentifiers": [],
        "LicenseModel": "general-public-license",
        "OptionGroupMemberships": [
            {
                "OptionGroupName": "default:mysql-5-7",
                "Status": "in-sync"
            }
        ],
        "PubliclyAccessible": true,
        "StorageType": "gp2",
        "DbInstancePort": 0,
        "StorageEncrypted": false,
        "DbiResourceId": "db-5555EXAMPLE44444444EXAMPLE",
        "CACertificateIdentifier": "rds-ca-2019",
        "DomainMemberships": [],
        "CopyTagsToSnapshot": false,
        "MonitoringInterval": 0,
        "DBInstanceArn": "arn:aws:rds:us-west-2:123456789012:db:test-mysql-instance",
        "IAMDatabaseAuthenticationEnabled": false,
        "PerformanceInsightsEnabled": false,
        "DeletionProtection": false,
        "AssociatedRoles": []
    }
}
```
Para obter mais informações, consulte [Criar uma instância de banco de dados do Amazon RDS](https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_CreateDBInstance.html) no *Guia do usuário do Amazon RDS*.  
+  Consulte detalhes da API em [CreateDBInstance](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/rds/create-db-instance.html) na *Referência de comandos da AWS CLI*. 

------
#### [ Go ]

**SDK para Go V2**  
 Há mais no GitHub. Encontre o exemplo completo e saiba como configurar e executar no [AWSCode Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/gov2/rds#code-examples). 

```
import (
	"context"
	"errors"
	"log"

	"github.com/aws/aws-sdk-go-v2/aws"
	"github.com/aws/aws-sdk-go-v2/service/rds"
	"github.com/aws/aws-sdk-go-v2/service/rds/types"
)

type DbInstances struct {
	RdsClient *rds.Client
}



// CreateInstance creates a DB instance.
func (instances *DbInstances) CreateInstance(ctx context.Context, instanceName string, dbName string,
	dbEngine string, dbEngineVersion string, parameterGroupName string, dbInstanceClass string,
	storageType string, allocatedStorage int32, adminName string, adminPassword string) (
	*types.DBInstance, error) {
	output, err := instances.RdsClient.CreateDBInstance(ctx, &rds.CreateDBInstanceInput{
		DBInstanceIdentifier: aws.String(instanceName),
		DBName:               aws.String(dbName),
		DBParameterGroupName: aws.String(parameterGroupName),
		Engine:               aws.String(dbEngine),
		EngineVersion:        aws.String(dbEngineVersion),
		DBInstanceClass:      aws.String(dbInstanceClass),
		StorageType:          aws.String(storageType),
		AllocatedStorage:     aws.Int32(allocatedStorage),
		MasterUsername:       aws.String(adminName),
		MasterUserPassword:   aws.String(adminPassword),
	})
	if err != nil {
		log.Printf("Couldn't create instance %v: %v\n", instanceName, err)
		return nil, err
	} else {
		return output.DBInstance, nil
	}
}
```
+  Consulte detalhes da API em [CreateDBInstance](https://pkg.go.dev/github.com/aws/aws-sdk-go-v2/service/rds#Client.CreateDBInstance) na *Referência da API AWS SDK para Go*. 

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

**SDK para Java 2.x**  
 Há mais no GitHub. Encontre o exemplo completo e saiba como configurar e executar no [AWSCode Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/rds#code-examples). 

```
import com.google.gson.Gson;
import software.amazon.awssdk.auth.credentials.EnvironmentVariableCredentialsProvider;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.rds.RdsClient;
import software.amazon.awssdk.services.rds.model.DescribeDbInstancesRequest;
import software.amazon.awssdk.services.rds.model.CreateDbInstanceRequest;
import software.amazon.awssdk.services.rds.model.CreateDbInstanceResponse;
import software.amazon.awssdk.services.rds.model.RdsException;
import software.amazon.awssdk.services.rds.model.DescribeDbInstancesResponse;
import software.amazon.awssdk.services.rds.model.DBInstance;
import software.amazon.awssdk.services.secretsmanager.SecretsManagerClient;
import software.amazon.awssdk.services.secretsmanager.model.GetSecretValueRequest;
import software.amazon.awssdk.services.secretsmanager.model.GetSecretValueResponse;

import java.util.List;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 *
 * This example requires an AWS Secrets Manager secret that contains the
 * database credentials. If you do not create a
 * secret, this example will not work. For more details, see:
 *
 * https://docs.aws.amazon.com/secretsmanager/latest/userguide/integrating_how-services-use-secrets_RS.html
 *
 *
 */

public class CreateDBInstance {
    public static long sleepTime = 20;

    public static void main(String[] args) {
        final String usage = """

                Usage:
                    <dbInstanceIdentifier> <dbName> <secretName>

                Where:
                    dbInstanceIdentifier - The database instance identifier.\s
                    dbName - The database name.\s
                    secretName - The name of the AWS Secrets Manager secret that contains the database credentials."
                """;

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

        String dbInstanceIdentifier = args[0];
        String dbName = args[1];
        String secretName = args[2];
        Gson gson = new Gson();
        User user = gson.fromJson(String.valueOf(getSecretValues(secretName)), User.class);
        Region region = Region.US_WEST_2;
        RdsClient rdsClient = RdsClient.builder()
                .region(region)
                .build();

        createDatabaseInstance(rdsClient, dbInstanceIdentifier, dbName, user.getUsername(), user.getPassword());
        waitForInstanceReady(rdsClient, dbInstanceIdentifier);
        rdsClient.close();
    }

    private static SecretsManagerClient getSecretClient() {
        Region region = Region.US_WEST_2;
        return SecretsManagerClient.builder()
                .region(region)
                .credentialsProvider(EnvironmentVariableCredentialsProvider.create())
                .build();
    }

    private static String getSecretValues(String secretName) {
        SecretsManagerClient secretClient = getSecretClient();
        GetSecretValueRequest valueRequest = GetSecretValueRequest.builder()
                .secretId(secretName)
                .build();

        GetSecretValueResponse valueResponse = secretClient.getSecretValue(valueRequest);
        return valueResponse.secretString();
    }

    public static void createDatabaseInstance(RdsClient rdsClient,
            String dbInstanceIdentifier,
            String dbName,
            String userName,
            String userPassword) {

        try {
            CreateDbInstanceRequest instanceRequest = CreateDbInstanceRequest.builder()
                .dbInstanceIdentifier(dbInstanceIdentifier)
                .allocatedStorage(100)
                .dbName(dbName)
                .engine("mysql")
                .dbInstanceClass("db.t3.medium") // Updated to a supported class
                .engineVersion("8.0.32")         // Updated to a supported version
                .storageType("gp2")             // Changed to General Purpose SSD (gp2)
                .masterUsername(userName)
                .masterUserPassword(userPassword)
                .build();

            CreateDbInstanceResponse response = rdsClient.createDBInstance(instanceRequest);
            System.out.print("The status is " + response.dbInstance().dbInstanceStatus());

        } catch (RdsException e) {
            System.out.println(e.getLocalizedMessage());
            System.exit(1);
        }
    }

    // Waits until the database instance is available.
    public static void waitForInstanceReady(RdsClient rdsClient, String dbInstanceIdentifier) {
        boolean instanceReady = false;
        String instanceReadyStr;
        System.out.println("Waiting for instance to become available.");
        try {
            DescribeDbInstancesRequest instanceRequest = DescribeDbInstancesRequest.builder()
                    .dbInstanceIdentifier(dbInstanceIdentifier)
                    .build();

            // Loop until the cluster is ready.
            while (!instanceReady) {
                DescribeDbInstancesResponse response = rdsClient.describeDBInstances(instanceRequest);
                List<DBInstance> instanceList = response.dbInstances();
                for (DBInstance instance : instanceList) {
                    instanceReadyStr = instance.dbInstanceStatus();
                    if (instanceReadyStr.contains("available"))
                        instanceReady = true;
                    else {
                        System.out.print(".");
                        Thread.sleep(sleepTime * 1000);
                    }
                }
            }
            System.out.println("Database instance is available!");

        } catch (RdsException | InterruptedException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }
```
+  Consulte detalhes da API em [CreateDBInstance](https://docs.aws.amazon.com/goto/SdkForJavaV2/rds-2014-10-31/CreateDBInstance) na *Referência da API AWS SDK for Java 2.x*. 

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

**SDK para Kotlin**  
 Há mais no GitHub. Encontre o exemplo completo e saiba como configurar e executar no [AWSCode Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/rds#code-examples). 

```
suspend fun createDatabaseInstance(
    dbInstanceIdentifierVal: String?,
    dbNamedbVal: String?,
    masterUsernameVal: String?,
    masterUserPasswordVal: String?,
) {
    val instanceRequest =
        CreateDbInstanceRequest {
            dbInstanceIdentifier = dbInstanceIdentifierVal
            allocatedStorage = 100
            dbName = dbNamedbVal
            engine = "mysql"
            dbInstanceClass = "db.t3.micro" // Use a supported instance class
            engineVersion = "8.0.39" // Use a supported engine version
            storageType = "gp2"
            masterUsername = masterUsernameVal
            masterUserPassword = masterUserPasswordVal
        }

    RdsClient.fromEnvironment { region = "us-west-2" }.use { rdsClient ->
        val response = rdsClient.createDbInstance(instanceRequest)
        print("The status is ${response.dbInstance?.dbInstanceStatus}")
    }
}

// Waits until the database instance is available.
suspend fun waitForInstanceReady(dbInstanceIdentifierVal: String?) {
    val sleepTime: Long = 20
    var instanceReady = false
    var instanceReadyStr: String
    println("Waiting for instance to become available.")

    val instanceRequest =
        DescribeDbInstancesRequest {
            dbInstanceIdentifier = dbInstanceIdentifierVal
        }

    RdsClient.fromEnvironment { region = "us-west-2" }.use { rdsClient ->
        while (!instanceReady) {
            val response = rdsClient.describeDbInstances(instanceRequest)
            val instanceList = response.dbInstances
            if (instanceList != null) {
                for (instance in instanceList) {
                    instanceReadyStr = instance.dbInstanceStatus.toString()
                    if (instanceReadyStr.contains("available")) {
                        instanceReady = true
                    } else {
                        println("...$instanceReadyStr")
                        delay(sleepTime * 1000)
                    }
                }
            }
        }
        println("Database instance is available!")
    }
}
```
+  Consulte detalhes da API em [CreateDBInstance](https://sdk.amazonaws.com/kotlin/api/latest/index.html) na *Referência da API AWS SDK para Kotlin*. 

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

**SDK para PHP**  
 Há mais no GitHub. Encontre o exemplo completo e saiba como configurar e executar no [AWSCode Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code/rds#code-examples). 

```
require __DIR__ . '/vendor/autoload.php';

use Aws\Exception\AwsException;



$rdsClient = new Aws\Rds\RdsClient([
    'region' => 'us-east-2'
]);

$dbIdentifier = '<<{{db-identifier}}>>';
$dbClass = 'db.t2.micro';
$storage = 5;
$engine = 'MySQL';
$username = 'MyUser';
$password = 'MyPassword';

try {
    $result = $rdsClient->createDBInstance([
        'DBInstanceIdentifier' => $dbIdentifier,
        'DBInstanceClass' => $dbClass,
        'AllocatedStorage' => $storage,
        'Engine' => $engine,
        'MasterUsername' => $username,
        'MasterUserPassword' => $password,
    ]);
    var_dump($result);
} catch (AwsException $e) {
    echo $e->getMessage();
    echo "\n";
}
```
+  Consulte detalhes da API em [CreateDBInstance](https://docs.aws.amazon.com/goto/SdkForPHPV3/rds-2014-10-31/CreateDBInstance) na *Referência da API AWS SDK para PHP*. 

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

**SDK para Python (Boto3).**  
 Há mais no GitHub. Encontre o exemplo completo e saiba como configurar e executar no [AWSCode Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/rds#code-examples). 

```
class InstanceWrapper:
    """Encapsulates Amazon RDS DB instance actions."""

    def __init__(self, rds_client):
        """
        :param rds_client: A Boto3 Amazon RDS client.
        """
        self.rds_client = rds_client

    @classmethod
    def from_client(cls):
        """
        Instantiates this class from a Boto3 client.
        """
        rds_client = boto3.client("rds")
        return cls(rds_client)


    def create_db_instance(
        self,
        db_name,
        instance_id,
        parameter_group_name,
        db_engine,
        db_engine_version,
        instance_class,
        storage_type,
        allocated_storage,
        admin_name,
        admin_password,
    ):
        """
        Creates a DB instance.

        :param db_name: The name of the database that is created in the DB instance.
        :param instance_id: The ID to give the newly created DB instance.
        :param parameter_group_name: A parameter group to associate with the DB instance.
        :param db_engine: The database engine of a database to create in the DB instance.
        :param db_engine_version: The engine version for the created database.
        :param instance_class: The DB instance class for the newly created DB instance.
        :param storage_type: The storage type of the DB instance.
        :param allocated_storage: The amount of storage allocated on the DB instance, in GiBs.
        :param admin_name: The name of the admin user for the created database.
        :param admin_password: The admin password for the created database.
        :return: Data about the newly created DB instance.
        """
        try:
            response = self.rds_client.create_db_instance(
                DBName=db_name,
                DBInstanceIdentifier=instance_id,
                DBParameterGroupName=parameter_group_name,
                Engine=db_engine,
                EngineVersion=db_engine_version,
                DBInstanceClass=instance_class,
                StorageType=storage_type,
                AllocatedStorage=allocated_storage,
                MasterUsername=admin_name,
                MasterUserPassword=admin_password,
            )
            db_inst = response["DBInstance"]
        except ClientError as err:
            logger.error(
                "Couldn't create DB instance %s. Here's why: %s: %s",
                instance_id,
                err.response["Error"]["Code"],
                err.response["Error"]["Message"],
            )
            raise
        else:
            return db_inst
```
+  Consulte detalhes da API em [CreateDBInstance](https://docs.aws.amazon.com/goto/boto3/rds-2014-10-31/CreateDBInstance) na *Referência da API AWS SDK para Python (Boto3)*. 

------
#### [ Swift ]

**SDK para Swift**  
 Há mais no GitHub. Encontre o exemplo completo e saiba como configurar e executar no [AWSCode Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/swift/example_code/rds#code-examples). 

```
import AWSRDS

    /// Create a new database instance.
    /// 
    /// - Parameters:
    ///   - name: The name of the database to create.
    ///   - instanceIdentifier: The identifier to give the new database
    ///     instance.
    ///   - parameterGroupName: The name of the parameter group to associate
    ///     with the new database instance.
    ///   - engine: The database engine to use.
    ///   - engineVersion: The version of the database given by `engine` to
    ///     use.
    ///   - instanceClass: The memory and compute capacity of the database
    ///     instance, such as `db.m5.large``.
    ///   - username: The admin user's username to establish for the new
    ///     instance.
    ///   - password: The password to use for the specified user's access.
    /// 
    /// - Returns: A string indicating the ARN of the newly created database
    ///   instance, or nil if the instance couldn't be created.
    func createDBInstance(name: String, instanceIdentifier: String, parameterGroupName: String,
                          engine: String, engineVersion: String, instanceClass: String,
                          username: String, password: String) async -> String? {
        do {
            let output = try await rdsClient.createDBInstance(
                input: CreateDBInstanceInput(
                    allocatedStorage: 100,
                    dbInstanceClass: instanceClass,
                    dbInstanceIdentifier: instanceIdentifier,
                    dbName: name,
                    dbParameterGroupName: parameterGroupName,
                    engine: engine,
                    engineVersion: engineVersion,
                    masterUserPassword: password,
                    masterUsername: username,
                    storageType: "gp2"
                )
            )

            guard let dbInstance = output.dbInstance else {
                print("*** Unable to get the database instance.")
                return nil
            }

            return dbInstance.dbInstanceArn
        } catch {
            print("*** An error occurred while creating the database instance: \(error.localizedDescription)")
            return nil
        }
    }
```
+  Para obter detalhes da API, consulte [CreateDBInstance](https://sdk.amazonaws.com/swift/api/awsrds/latest/documentation/awsrds/rdsclient/createdbinstance(input:)) na *Referência de API do AWS SDK para Swift*. 

------

Para ver uma lista completa dos guias de desenvolvedor e exemplos de código do SDK da AWS, consulte [Using this service with an AWS SDK](CHAP_Tutorials.md#sdk-general-information-section). Este tópico também inclui informações sobre como começar e detalhes sobre versões anteriores do SDK.