Auto Scaling examples using AWS CLI

To attach an instance to an Auto Scaling group

This example attaches the specified instance to the specified Auto Scaling group.

aws autoscaling attach-instances \
    --instance-ids i-061c63c5eb45f0416 \
    --auto-scaling-group-name my-asg

This command produces no output.

To attach a target group to an Auto Scaling group

This example attaches the specified target group to the specified Auto Scaling group.

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

This command produces no output.

For more information, see Elastic Load Balancing and Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide.

To attach a Classic Load Balancer to an Auto Scaling group

This example attaches the specified Classic Load Balancer to the specified Auto Scaling group.

aws autoscaling attach-load-balancers \
    --load-balancer-names my-load-balancer \
    --auto-scaling-group-name my-asg

This command produces no output.

For more information, see Elastic Load Balancing and Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide.

To cancel an instance refresh

The following cancel-instance-refresh example cancels an in-progress instance refresh for the specified Auto Scaling group.

aws autoscaling cancel-instance-refresh \
    --auto-scaling-group-name my-asg

Output:

{
    "InstanceRefreshId": "08b91cf7-8fa6-48af-b6a6-d227f40f1b9b"
}

For more information, see Cancel an instance refresh in the Amazon EC2 Auto Scaling User Guide.

To complete the lifecycle action

This example notifies Amazon EC2 Auto Scaling that the specified lifecycle action is complete so that it can finish launching or terminating the instance.

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

This command produces no output.

For more information, see Amazon EC2 Auto Scaling lifecycle hooks in the Amazon EC2 Auto Scaling User Guide.

Example 1: To create an Auto Scaling group

The following create-auto-scaling-group example creates an Auto Scaling group in subnets in multiple Availability Zones within a Region. The instances launch with the default version of the specified launch template. Note that defaults are used for most other settings, such as the termination policies and health check configuration.

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"

This command produces no output.

For more information, see Auto Scaling groups in the Amazon EC2 Auto Scaling User Guide.

Example 2: To attach an Application Load Balancer, Network Load Balancer, or Gateway Load Balancer

This example specifies the ARN of a target group for a load balancer that supports the expected traffic. The health check type specifies ELB so that when Elastic Load Balancing reports an instance as unhealthy, the Auto Scaling group replaces it. The command also defines a health check grace period of 600 seconds. The grace period helps prevent premature termination of newly launched instances.

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"

This command produces no output.

For more information, see Elastic Load Balancing and Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide.

Example 3: To specify a placement group and use the latest version of the launch template

This example launches instances into a placement group within a single Availability Zone. This can be useful for low-latency groups with HPC workloads. This example also specifies the minimum size, maximum size, and desired capacity of the group.

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"

This command produces no output.

For more information, see Placement groups in the Amazon EC2 User Guide for Linux Instances.

Example 4: To specify a single instance Auto Scaling group and use a specific version of the launch template

This example creates an Auto Scaling group with minimum and maximum capacity set to 1 to enforce that one instance will be running. The command also specifies v1 of a launch template in which the ID of an existing ENI is specified. When you use a launch template that specifies an existing ENI for eth0, you must specify an Availability Zone for the Auto Scaling group that matches the network interface, without also specifying a subnet ID in the request.

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

This command produces no output.

For more information, see Auto Scaling groups in the Amazon EC2 Auto Scaling User Guide.

Example 5: To specify a different termination policy

This example creates an Auto Scaling group using a launch configuration and sets the termination policy to terminate the oldest instances first. The command also applies a tag to the group and its instances, with a key of Role and a value of 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"

This command produces no output.

For more information, see Working with Amazon EC2 Auto Scaling termination policies in the Amazon EC2 Auto Scaling User Guide.

Example 6: To specify a launch lifecycle hook

This example creates an Auto Scaling group with a lifecycle hook that supports a custom action at instance launch.

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

Contents of config.json file:

{
    "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"
    }]
}

This command produces no output.

For more information, see Amazon EC2 Auto Scaling lifecycle hooks in the Amazon EC2 Auto Scaling User Guide.

Example 7: To specify a termination lifecycle hook

This example creates an Auto Scaling group with a lifecycle hook that supports a custom action at instance termination.

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

Contents of 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"
}

This command produces no output.

For more information, see Amazon EC2 Auto Scaling lifecycle hooks in the Amazon EC2 Auto Scaling User Guide.

Example 8: To specify a custom termination policy

This example creates an Auto Scaling group that specifies a custom Lambda function termination policy that tells Amazon EC2 Auto Scaling which instances are safe to terminate on scale in.

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"

This command produces no output.

For more information, see Creating a custom termination policy with Lambda in the Amazon EC2 Auto Scaling User Guide.

Example 1: To create a launch configuration

This example creates a simple launch configuration.

aws autoscaling create-launch-configuration \
    --launch-configuration-name my-lc \
    --image-id ami-04d5cc9b88example \
    --instance-type m5.large

This command produces no output.

For more information, see Creating a launch configuration in the Amazon EC2 Auto Scaling User Guide.

Example 2: To create a launch configuration with a security group, key pair, and bootrapping script

This example creates a launch configuration with a security group, a key pair, and a bootrapping script contained in the user data.

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

This command produces no output.

For more information, see Creating a launch configuration in the Amazon EC2 Auto Scaling User Guide.

Example 3: To create a launch configuration with an IAM role

This example creates a launch configuration with the instance profile name of an IAM role.

aws autoscaling create-launch-configuration \
    --launch-configuration-name my-lc \
    --image-id ami-04d5cc9b88example \
    --instance-type m5.large \
    --iam-instance-profile my-autoscaling-role

This command produces no output.

For more information, see IAM role for applications that run on Amazon EC2 instances in the Amazon EC2 Auto Scaling User Guide.

Example 4: To create a launch configuration with detailed monitoring enabled

This example creates a launch configuration with EC2 detailed monitoring enabled, which sends EC2 metrics to CloudWatch in 1-minute periods.

aws autoscaling create-launch-configuration \
    --launch-configuration-name my-lc \
    --image-id ami-04d5cc9b88example \
    --instance-type m5.large \
    --instance-monitoring Enabled=true

This command produces no output.

For more information, see Configuring monitoring for Auto Scaling instances in the Amazon EC2 Auto Scaling User Guide.

Example 5: To create a launch configuration that launches Spot Instances

This example creates a launch configuration that uses Spot Instances as the only purchase option.

aws autoscaling create-launch-configuration \
    --launch-configuration-name my-lc \
    --image-id ami-04d5cc9b88example \
    --instance-type m5.large \
    --spot-price "0.50"

This command produces no output.

For more information, see Requesting Spot Instances in the Amazon EC2 Auto Scaling User Guide.

Example 6: To create a launch configuration using an EC2 instance

This example creates a launch configuration based on the attributes of an existing instance. It overrides the placement tenancy and whether a public IP address is set by including the --placement-tenancy and --no-associate-public-ip-address options.

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

This command produces no output.

For more information, see Creating a launch configuration using an EC2 instance in the Amazon EC2 Auto Scaling User Guide.

Example 7: To create a launch configuration with a block device mapping for an Amazon EBS volume

This example creates a launch configuration with a block device mapping for an Amazon EBS gp3 volume with the device name /dev/sdh and a volume size of 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"}}]'

This command produces no output.

For more information, see EBS in the Amazon EC2 Auto Scaling API Reference.

For information about the syntax for quoting JSON-formatted parameter values, see Using quotation marks with strings in the AWS CLI in the AWS Command Line Interface User Guide.

Example 8: To create a launch configuration with a block device mapping for an instance store volume

This example creates a launch configuration with ephemeral1 as an instance store volume with the device name /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"}]'

This command produces no output.

For more information, see BlockDeviceMapping in the Amazon EC2 Auto Scaling API Reference.

For information about the syntax for quoting JSON-formatted parameter values, see Using quotation marks with strings in the AWS CLI in the AWS Command Line Interface User Guide.

Example 9: To create a launch configuration and suppress a block device from attaching at launch time

This example creates a launch configuration that suppresses a block device specified by the block device mapping of the AMI (for example, /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":""}]'

This command produces no output.

For more information, see BlockDeviceMapping in the Amazon EC2 Auto Scaling API Reference.

For information about the syntax for quoting JSON-formatted parameter values, see Using quotation marks with strings in the AWS CLI in the AWS Command Line Interface User Guide.

To create or update tags for an Auto Scaling group

This example adds two tags to the specified Auto Scaling group.

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

This command produces no output.

For more information, see Tagging Auto Scaling groups and instances in the Amazon EC2 Auto Scaling User Guide.

Example 1: To delete the specified Auto Scaling group

This example deletes the specified Auto Scaling group.

aws autoscaling delete-auto-scaling-group \
    --auto-scaling-group-name my-asg

This command produces no output.

For more information, see Deleting your Auto Scaling infrastructure in the Amazon EC2 Auto Scaling User Guide.

Example 2: To force delete the specified Auto Scaling group

To delete the Auto Scaling group without waiting for the instances in the group to terminate, use the --force-delete option.

aws autoscaling delete-auto-scaling-group \
    --auto-scaling-group-name my-asg \
    --force-delete

This command produces no output.

For more information, see Deleting your Auto Scaling infrastructure in the Amazon EC2 Auto Scaling User Guide.

To delete a launch configuration

This example deletes the specified launch configuration.

aws autoscaling delete-launch-configuration \
    --launch-configuration-name my-launch-config

This command produces no output.

For more information, see Deleting your Auto Scaling infrastructure in the Amazon EC2 Auto Scaling User Guide.

To delete a lifecycle hook

This example deletes the specified lifecycle hook.

aws autoscaling delete-lifecycle-hook \
    --lifecycle-hook-name my-lifecycle-hook \
    --auto-scaling-group-name my-asg

This command produces no output.

To delete an Auto Scaling notification

This example deletes the specified notification from the specified Auto Scaling group.

aws autoscaling delete-notification-configuration \
    --auto-scaling-group-name my-asg \
    --topic-arn arn:aws:sns:us-west-2:123456789012:my-sns-topic

This command produces no output.

For more information, see Delete the notification configuration in the Amazon EC2 Auto Scaling User Guide.

To delete a scaling policy

This example deletes the specified scaling policy.

aws autoscaling delete-policy \
    --auto-scaling-group-name my-asg \
    --policy-name alb1000-target-tracking-scaling-policy

This command produces no output.

To delete a scheduled action from an Auto Scaling group

This example deletes the specified scheduled action from the specified Auto Scaling group.

aws autoscaling delete-scheduled-action \
    --auto-scaling-group-name my-asg \
    --scheduled-action-name my-scheduled-action

This command produces no output.

To delete a tag from an Auto Scaling group

This example deletes the specified tag from the specified Auto Scaling group.

aws autoscaling delete-tags \
    --tags ResourceId=my-asg,ResourceType=auto-scaling-group,Key=Dept,Value=Research

This command produces no output.

For more information, see Tagging Auto Scaling groups and instances in the Amazon EC2 Auto Scaling User Guide.

Example 1: To delete a warm pool

The following example deletes the warm pool for the specified Auto Scaling group.

aws autoscaling delete-warm-pool \
    --auto-scaling-group-name my-asg

This command produces no output.

For more information, see Warm pools for Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide.

Example 2: To force delete a warm pool

To delete the warm pool without waiting for its instances to terminate, use the --force-delete option.

aws autoscaling delete-warm-pool \
    --auto-scaling-group-name my-asg \
    --force-delete

This command produces no output.

For more information, see Warm pools for Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide.

To describe your Amazon EC2 Auto Scaling account limits

This example describes the Amazon EC2 Auto Scaling limits for your AWS account.

aws autoscaling describe-account-limits

Output:

{
    "NumberOfLaunchConfigurations": 5,
    "MaxNumberOfLaunchConfigurations": 100,
    "NumberOfAutoScalingGroups": 3,
    "MaxNumberOfAutoScalingGroups": 20
}

For more information, see Amazon EC2 Auto Scaling service quotas in the Amazon EC2 Auto Scaling User Guide.

To describe the available scaling adjustment types

This example describes the available adjustment types.

aws autoscaling describe-adjustment-types

Output:

{
    "AdjustmentTypes": [
        {
            "AdjustmentType": "ChangeInCapacity"
        },
        {
            "AdjustmentType": "ExactCapacity"
        },
        {
            "AdjustmentType": "PercentChangeInCapacity"
        }
    ]
}

For more information, see Scaling adjustment types in the Amazon EC2 Auto Scaling User Guide.

Example 1: To describe the specified Auto Scaling group

This example describes the specified Auto Scaling group.

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": []
        }
    ]
}

Example 2: To describe the first 100 specified Auto Scaling group

This example describes the specified Auto Scaling groups. It allows you to specify up to 100 group names.

aws autoscaling describe-auto-scaling-groups \
    --max-items 100 \
    --auto-scaling-group-names "group1" "group2" "group3" "group4"

See example 1 for sample output.

Example 3: To describe an Auto Scaling group in the specified region

This example describes the Auto Scaling groups in the specified region, up to a maximum of 75 groups.

aws autoscaling describe-auto-scaling-groups \
    --max-items 75 \
    --region us-east-1

See example 1 for sample output.

Example 4: To describe the specified number of Auto Scaling group

To return a specific number of Auto Scaling groups, use the --max-items option.

aws autoscaling describe-auto-scaling-groups \
    --max-items 1

See example 1 for sample output.

If the output includes a NextToken field, there are more groups. To get the additional groups, use the value of this field with the --starting-token option in a subsequent call as follows.

aws autoscaling describe-auto-scaling-groups \
    --starting-token Z3M3LMPEXAMPLE

See example 1 for sample output.

Example 5: To describe Auto Scaling groups that use launch configurations

This example uses the --query option to describe Auto Scaling groups that use launch configurations.

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": []
    }
]

For more information, see Filter AWS CLI output in the AWS Command Line Interface User Guide.

Example 1: To describe one or more instances

This example describes the specified instance.

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"
            }
        }
    ]
}

Example 2: To describe one or more instances

This example uses the --max-items option to specify how many instances to return with this call.

aws autoscaling describe-auto-scaling-instances \
    --max-items 1

If the output includes a NextToken field, there are more instances. To get the additional instances, use the value of this field with the --starting-token option in a subsequent call as follows.

aws autoscaling describe-auto-scaling-instances \
    --starting-token Z3M3LMPEXAMPLE

See example 1 for sample output.

Example 3: To describe instances that use launch configurations

This example uses the --query option to describe instances that use launch configurations.

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
    }
]

For more information, see Filter AWS CLI output in the AWS Command Line Interface User Guide.

To describe the available notification types

This example describes the available notification types.

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"
    ]
}

For more information, see Getting Amazon SNS notifications when your Auto Scaling group scales in the Amazon EC2 Auto Scaling User Guide.

To describe instance refreshes

The following describe-instance-refreshes example returns a description of all instance refresh requests for the specified Auto Scaling group, including the status message and (if available) the status reason.

aws autoscaling describe-instance-refreshes \
    --auto-scaling-group-name my-asg

Output:

{
    "InstanceRefreshes": [
        {
            "InstanceRefreshId": "08b91cf7-8fa6-48af-b6a6-d227f40f1b9b",
            "AutoScalingGroupName": "my-asg",
            "Status": "InProgress",
            "StatusReason": "Waiting for instances to warm up before continuing. For example: 0e69cc3f05f825f4f is warming up.",
            "EndTime": "2023-03-23T16:42:55Z",
            "PercentageComplete": 0,
            "InstancesToUpdate": 0,
    "Preferences": {
                "MinHealthyPercentage": 100,
                "InstanceWarmup": 300,
                "CheckpointPercentages": [
                    50
                ],
                "CheckpointDelay": 3600,
                "SkipMatching": false,
                "AutoRollback": true,
                "ScaleInProtectedInstances": "Ignore",
                "StandbyInstances": "Ignore"
            }
        },
        {
            "InstanceRefreshId": "dd7728d0-5bc4-4575-96a3-1b2c52bf8bb1",
            "AutoScalingGroupName": "my-asg",
            "Status": "Successful",
            "EndTime": "2022-06-02T16:53:37Z",
            "PercentageComplete": 100,
            "InstancesToUpdate": 0,
    "Preferences": {
                "MinHealthyPercentage": 90,
                "InstanceWarmup": 300,
                "SkipMatching": true,
                "AutoRollback": true,
                "ScaleInProtectedInstances": "Ignore",
                "StandbyInstances": "Ignore"
            }
        }
    ]
}

For more information, see Check the status of an instance refresh in the Amazon EC2 Auto Scaling User Guide.

Example 1: To describe the specified launch configuration

This example describes the specified launch configuration.

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"
            }
        }
    ]
}

Example 2: To describe a specified number of launch configurations

To return a specific number of launch configurations, use the --max-items option.

aws autoscaling describe-launch-configurations \
    --max-items 1

If the output includes a NextToken field, there are more launch configurations. To get the additional launch configurations, use the value of this field with the --starting-token option in a subsequent call as follows.

aws autoscaling describe-launch-configurations \
    --starting-token Z3M3LMPEXAMPLE

To describe the available lifecycle hook types

This example describes the available lifecycle hook types.

aws autoscaling describe-lifecycle-hook-types

Output:

{
    "LifecycleHookTypes": [
        "autoscaling:EC2_INSTANCE_LAUNCHING",
        "autoscaling:EC2_INSTANCE_TERMINATING"
    ]
}

To describe your lifecycle hooks

This example describes the lifecycle hooks for the specified Auto Scaling group.

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"
        }
    ]
}

To describe the load balancer target groups for an Auto Scaling group

This example describes the load balancer target groups attached to the specified Auto Scaling group.

aws autoscaling describe-load-balancer-target-groups \
    --auto-scaling-group-name my-asg

Output:

{
    "LoadBalancerTargetGroups": [
        {
            "LoadBalancerTargetGroupARN": "arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-targets/73e2d6bc24d8a067",
            "State": "Added"
        }
    ]
}

To describe the Classic Load Balancers for an Auto Scaling group

This example describes the Classic Load Balancers for the specified Auto Scaling group.

aws autoscaling describe-load-balancers \
    --auto-scaling-group-name my-asg

Output:

{
    "LoadBalancers": [
        {
            "State": "Added",
            "LoadBalancerName": "my-load-balancer"
        }
    ]
}

To describe the available metric collection types

This example describes the available metric collection types.

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"
        }
    ]
}

For more information, see Auto Scaling group metrics in the Amazon EC2 Auto Scaling User Guide.

Example 1: To describe the notification configurations of a specified group

This example describes the notification configurations for the specified Auto Scaling group.

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"
        }
    ]
}

For more information, see Getting Amazon SNS notifications when your Auto Scaling group scales in the Amazon EC2 Auto Scaling User Guide.

Example 1: To describe a specified number of notification configurations

To return a specific number of notification configurations, use the max-items parameter.

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"
        }
    ]
}

If the output includes a NextToken field, there are more notification configurations. To get the additional notification configurations, use the value of this field with the starting-token parameter in a subsequent call as follows.

aws autoscaling describe-notification-configurations \
    --auto-scaling-group-name my-asg \
    --starting-token Z3M3LMPEXAMPLE

For more information, see Getting Amazon SNS notifications when your Auto Scaling group scales in the Amazon EC2 Auto Scaling User Guide.

Example 1: To describe the scaling policies of a specified group

This example describes the scaling policies for the specified Auto Scaling group.

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
        }
    ]
}

For more information, see Dynamic scaling in the Amazon EC2 Auto Scaling User Guide.

Example 2: To describe the scaling policies of a specified name

To return specific scaling policies, use the --policy-names option.

aws autoscaling describe-policies \
    --auto-scaling-group-name my-asg \
    --policy-names cpu40-target-tracking-scaling-policy

See example 1 for sample output.

For more information, see Dynamic scaling in the Amazon EC2 Auto Scaling User Guide.

Example 3: To describe a number of scaling policies

To return a specific number of policies, use the --max-items option.

aws autoscaling describe-policies \
    --auto-scaling-group-name my-asg \
    --max-items 1

See example 1 for sample output.

If the output includes a NextToken field, use the value of this field with the --starting-token option in a subsequent call to get the additional policies.

aws autoscaling describe-policies --auto-scaling-group-name my-asg --starting-token Z3M3LMPEXAMPLE

For more information, see Dynamic scaling in the Amazon EC2 Auto Scaling User Guide.

Example 1: To describe scaling activities for the specified group

This example describes the scaling activities for the specified Auto Scaling group.

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\"}"
        }
    ]
}

For more information, see Verify a scaling activity for an Auto Scaling group in the Amazon EC2 Auto Scaling User Guide.

Example 2: To describe the scaling activities for a deleted group

To describe scaling activities after the Auto Scaling group has been deleted, add the --include-deleted-groups option.

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"
        }
    ]
}

For more information, see Troubleshoot Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide.

Example 3: To describe a specified number of scaling activities

To return a specific number of activities, use the --max-items option.

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\"}"
        }
    ]
}

If the output includes a NextToken field, there are more activities. To get the additional activities, use the value of this field with the --starting-token option in a subsequent call as follows.

aws autoscaling describe-scaling-activities \
    --starting-token Z3M3LMPEXAMPLE

For more information, see Verify a scaling activity for an Auto Scaling group in the Amazon EC2 Auto Scaling User Guide.

To describe the available process types

This example describes the available process types.

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"
        }
    ]
}

For more information, see Suspending and resuming scaling processes in the Amazon EC2 Auto Scaling User Guide.

Example 1: To describe all scheduled actions

This example describes all your scheduled actions.

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"
        }
    ]
}

For more information, see Scheduled scaling in the Amazon EC2 Auto Scaling User Guide.

Example 2: To describe scheduled actions for the specified group

To describe the scheduled actions for a specific Auto Scaling group, use the --auto-scaling-group-name option.

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"
        }
    ]
}

For more information, see Scheduled scaling in the Amazon EC2 Auto Scaling User Guide.

Example 3: To describe the specified scheduled action

To describe a specific scheduled action, use the --scheduled-action-names option.

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"
        }
    ]
}

For more information, see Scheduled scaling in the Amazon EC2 Auto Scaling User Guide.

Example 4: To describe scheduled actions with a specified start time

To describe the scheduled actions that start at a specific time, use the --start-time option.

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"
        }
    ]
}

For more information, see Scheduled scaling in the Amazon EC2 Auto Scaling User Guide.

Example 5: To describe scheduled actions that end at a specified time

To describe the scheduled actions that end at a specific time, use the --end-time option.

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"
        }
    ]
}

For more information, see Scheduled scaling in the Amazon EC2 Auto Scaling User Guide.

Example 6: To describe a specified number of scheduled actions

To return a specific number of scheduled actions, use the --max-items option.

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"
        }
    ]
}

If the output includes a NextToken field, there are more scheduled actions. To get the additional scheduled actions, use the value of this field with the --starting-token option in a subsequent call as follows.

aws autoscaling describe-scheduled-actions \
    --auto-scaling-group-name my-asg \
    --starting-token Z3M3LMPEXAMPLE

For more information, see Scheduled scaling in the Amazon EC2 Auto Scaling User Guide.

To describe all tags

This example describes all your tags.

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"
        }
    ]
}

For more information, see Tagging Auto Scaling groups and instances in the Amazon EC2 Auto Scaling User Guide.

Example 2: To describe tags for a specified group

To describe tags for a specific Auto Scaling group, use the --filters option.

aws autoscaling describe-tags --filters Name=auto-scaling-group,Values=my-asg

For more information, see Tagging Auto Scaling groups and instances in the Amazon EC2 Auto Scaling User Guide.

Example 3: To describe the specified number of tags

To return a specific number of tags, use the --max-items option.

aws autoscaling describe-tags \
    --max-items 1

If the output includes a NextToken field, there are more tags. To get the additional tags, use the value of this field with the --starting-token option in a subsequent call as follows.

aws autoscaling describe-tags \
    --filters Name=auto-scaling-group,Values=my-asg \
    --starting-token Z3M3LMPEXAMPLE

For more information, see Tagging Auto Scaling groups and instances in the Amazon EC2 Auto Scaling User Guide.

To describe available termination policy types

This example describes the available termination policy types.

aws autoscaling describe-termination-policy-types

Output:

{
    "TerminationPolicyTypes": [
        "AllocationStrategy",
        "ClosestToNextInstanceHour",
        "Default",
        "NewestInstance",
        "OldestInstance",
        "OldestLaunchConfiguration",
        "OldestLaunchTemplate"
    ]
}

For more information, see Controlling which Auto Scaling instances terminate during scale in in the Amazon EC2 Auto Scaling User Guide.

To describe a warm pool

This example describes the warm pool for the specified Auto Scaling group.

aws autoscaling describe-warm-pool \
    --auto-scaling-group-name my-asg

Output:

{
    "WarmPoolConfiguration": {
        "MinSize": 2,
        "PoolState": "Stopped"
    },
    "Instances": [
        {
            "InstanceId": "i-070a5bbc7e7f40dc5",
            "InstanceType": "t2.micro",
            "AvailabilityZone": "us-west-2c",
            "LifecycleState": "Warmed:Pending",
            "HealthStatus": "Healthy",
            "LaunchTemplate": {
                "LaunchTemplateId": "lt-00a731f6e9fa48610",
                "LaunchTemplateName": "my-template-for-auto-scaling",
                "Version": "6"
            }
        },
        {
            "InstanceId": "i-0b52f061814d3bd2d",
            "InstanceType": "t2.micro",
            "AvailabilityZone": "us-west-2b",
            "LifecycleState": "Warmed:Pending",
            "HealthStatus": "Healthy",
            "LaunchTemplate": {
                "LaunchTemplateId": "lt-00a731f6e9fa48610",
                "LaunchTemplateName": "my-template-for-auto-scaling",
                "Version": "6"
            }
        }
    ]
}

For more information, see Warm pools for Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide.

To detach an instance from an Auto Scaling group

This example detaches the specified instance from the specified Auto Scaling group.

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\"}"
        }
    ]
}

To detach a load balancer target group from an Auto Scaling group

This example detaches the specified load balancer target group from the specified Auto Scaling group.

aws autoscaling detach-load-balancer-target-groups \
    --auto-scaling-group-name my-asg \
    --target-group-arns arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-targets/73e2d6bc24d8a067

This command produces no output

For more information, see Attaching a load balancer to your Auto Scaling group in the Amazon EC2 Auto Scaling User Guide.

To detach a Classic Load Balancer from an Auto Scaling group

This example detaches the specified Classic Load Balancer from the specified Auto Scaling group.

aws autoscaling detach-load-balancers \
    --load-balancer-names my-load-balancer \
    --auto-scaling-group-name my-asg

This command produces no output.

For more information, see Attaching a load balancer to your Auto Scaling group in the Amazon EC2 Auto Scaling User Guide.

To disable metrics collection for an Auto Scaling group

This example disables collection of the GroupDesiredCapacity metric for the specified Auto Scaling group.

aws autoscaling disable-metrics-collection \
    --auto-scaling-group-name my-asg \
    --metrics GroupDesiredCapacity

This command produces no output.

For more information, see Monitoring CloudWatch metrics for your Auto Scaling groups and instances in the Amazon EC2 Auto Scaling User Guide.

Example 1: To enable metrics collection for an Auto Scaling group

This example enables data collection for the specified Auto Scaling group.

aws autoscaling enable-metrics-collection \
    --auto-scaling-group-name my-asg \
    --granularity "1Minute"

This command produces no output.

For more information, see Monitoring CloudWatch metrics for your Auto Scaling groups and instances in the Amazon EC2 Auto Scaling User Guide.

Example 2: To collect data for the specified metric for an Auto Scaling group

To collect data for a specific metric, use the --metrics option.

aws autoscaling enable-metrics-collection \
    --auto-scaling-group-name my-asg \
    --metrics GroupDesiredCapacity --granularity "1Minute"

This command produces no output.

For more information, see Monitoring CloudWatch metrics for your Auto Scaling groups and instances in the Amazon EC2 Auto Scaling User Guide.

To move instances into standby mode

This example puts the specified instance into standby mode. This is useful for updating or troubleshooting an instance that is currently in service.

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\"}"
        }
    ]
}

For more information, see Amazon EC2 Auto Scaling instance lifecycle in the Amazon EC2 Auto Scaling User Guide.

To execute a scaling policy

This example executes the scaling policy named my-step-scale-out-policy for the specified Auto Scaling group.

aws autoscaling execute-policy \
    --auto-scaling-group-name my-asg \
    --policy-name  my-step-scale-out-policy \
    --metric-value 95 \
    --breach-threshold 80

This command produces no output.

For more information, see Step and simple scaling policies in the Amazon EC2 Auto Scaling User Guide.

To move instances out of standby mode

This example moves the specified instance out of standby mode.

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\"}"
        }
    ]
}

For more information, see Temporarily removing instances from your Auto Scaling group in the Amazon EC2 Auto Scaling User Guide.

Example 1: To create a lifecycle hook

This example creates a lifecycle hook that will invoke on any newly launched instances, with a timeout of 4800 seconds. This is useful for keeping the instances in a wait state until the user data scripts have finished, or for invoking an AWS Lambda function using 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

This command produces no output. If a lifecycle hook with the same name already exists, it will be overwritten by the new lifecycle hook.

For more information, see Amazon EC2 Auto Scaling lifecycle hooks in the Amazon EC2 Auto Scaling User Guide.

Example 2: To send an Amazon SNS email message to notify you of instance state transitions

This example creates a lifecycle hook with the Amazon SNS topic and IAM role to use to receive notification at instance launch.

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

This command produces no output.

For more information, see Amazon EC2 Auto Scaling lifecycle hooks in the Amazon EC2 Auto Scaling User Guide.

Example 3: To publish a message to an Amazon SQS queue

This example creates a lifecycle hook that publishes a message with metadata to the specified Amazon SQS queue.

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"

This command produces no output.

For more information, see Amazon EC2 Auto Scaling lifecycle hooks in the Amazon EC2 Auto Scaling User Guide.

To add a notification

This example adds the specified notification to the specified Auto Scaling group.

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

This command produces no output.

For more information, see Getting Amazon SNS notifications when your Auto Scaling group scales in the Amazon EC2 Auto Scaling User Guide.

To add a target tracking scaling policy to an Auto Scaling group

The following put-scaling-policy example applies a target tracking scaling policy to the specified Auto Scaling group. The output contains the ARNs and names of the two CloudWatch alarms created on your behalf. If a scaling policy with the same name already exists, it will be overwritten by the new scaling 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

Contents of 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"
         }
     ]
 }

For more examples, see Example scaling policies for the AWS Command Line Interface (AWS CLI) in the Amazon EC2 Auto Scaling User Guide.

Example 1: To add a scheduled action to an Auto Scaling group

This example adds the specified scheduled action to the specified Auto Scaling group.

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

This command produces no output. If a scheduled action with the same name already exists, it will be overwritten by the new scheduled action.

For more examples, see Scheduled scaling in the Amazon EC2 Auto Scaling User Guide.

Example 2: To specify a recurring schedule

This example creates a scheduled action to scale on a recurring schedule that is scheduled to execute at 00:30 hours on the first of January, June, and December every year.

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

This command produces no output. If a scheduled action with the same name already exists, it will be overwritten by the new scheduled action.

For more examples, see Scheduled scaling in the Amazon EC2 Auto Scaling User Guide.

To create a warm pool

The following example creates a warm pool for the specified Auto Scaling group.

aws autoscaling put-warm-pool \
    --auto-scaling-group-name my-asg \
    --min-size 2

This command produces no output. If a warm pool already exists, it will be updated.

For more information, see Warm pools for Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide.

To record a lifecycle action heartbeat

This example records a lifecycle action heartbeat to keep the instance in a pending state.

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

This command produces no output.

For more information, see Amazon EC2 Auto Scaling lifecycle hooks in the Amazon EC2 Auto Scaling User Guide.

To resume suspended processes

This example resumes the specified suspended scaling process for the specified Auto Scaling group.

aws autoscaling resume-processes \
    --auto-scaling-group-name my-asg \
    --scaling-processes AlarmNotification

This command produces no output.

For more information, see Suspending and resuming scaling processes in the Amazon EC2 Auto Scaling User Guide.

To roll back an instance refresh

The following rollback-instance-refresh example rolls back an in-progress instance refresh for the specified Auto Scaling group.

aws autoscaling rollback-instance-refresh \
    --auto-scaling-group-name my-asg

Output:

{
    "InstanceRefreshId": "08b91cf7-8fa6-48af-b6a6-d227f40f1b9b"
}

For more information, see Undo changes with a rollback in the Amazon EC2 Auto Scaling User Guide.

To set the desired capacity for an Auto Scaling group

This example sets the desired capacity for the specified Auto Scaling group.

aws autoscaling set-desired-capacity \
    --auto-scaling-group-name my-asg \
    --desired-capacity 2 \
    --honor-cooldown

This command returns to the prompt if successful.

To set the health status of an instance

This example sets the health status of the specified instance to Unhealthy.

aws autoscaling set-instance-health \
    --instance-id i-061c63c5eb45f0416 \
    --health-status Unhealthy

This command produces no output.

Example 1: To enable the instance protection setting for an instance

This example enables instance protection for the specified instance.

aws autoscaling set-instance-protection \
    --instance-ids i-061c63c5eb45f0416 \
    --auto-scaling-group-name my-asg --protected-from-scale-in

This command produces no output.

Example 2: To disable the instance protection setting for an instance

This example disables instance protection for the specified instance.

aws autoscaling set-instance-protection \
    --instance-ids i-061c63c5eb45f0416 \
    --auto-scaling-group-name my-asg \
    --no-protected-from-scale-in

This command produces no output.

Example 1: To start an instance refresh using command line parameters

The following start-instance-refresh example starts an instance refresh using command line arguments. The optional preferences parameter specifies an InstanceWarmup of 60 seconds and a MinHealthyPercentage of 50 percent.

aws autoscaling start-instance-refresh \
    --auto-scaling-group-name my-asg \
    --preferences '{"InstanceWarmup": 60, "MinHealthyPercentage": 50}'

Output:

{
    "InstanceRefreshId": "08b91cf7-8fa6-48af-b6a6-d227f40f1b9b"
}

For more information, see Start an instance refresh in the Amazon EC2 Auto Scaling User Guide.

Example 2: To start an instance refresh using a JSON file

The following start-instance-refresh example starts an instance refresh using a JSON file. You can specify the Auto Scaling group and define your desired configuration and preferences in a JSON file, as shown in the following example.

aws autoscaling start-instance-refresh \
    --cli-input-json file://config.json

Contents of config.json:

{
    "AutoScalingGroupName": "my-asg",
    "DesiredConfiguration": {
        "LaunchTemplate": {
            "LaunchTemplateId": "lt-068f72b729example",
            "Version": "$Default"
        }
    },
    "Preferences": {
        "InstanceWarmup": 60,
        "MinHealthyPercentage": 50,
        "AutoRollback": true,
        "ScaleInProtectedInstances": Ignore,
        "StandbyInstances": Terminate
    }
}

Output:

{
    "InstanceRefreshId": "08b91cf7-8fa6-48af-b6a6-d227f40f1b9b"
}

For more information, see Start an instance refresh in the Amazon EC2 Auto Scaling User Guide.

To suspend Auto Scaling processes

This example suspends the specified scaling process for the specified Auto Scaling group.

aws autoscaling suspend-processes \
    --auto-scaling-group-name my-asg \
    --scaling-processes AlarmNotification

This command produces no output.

For more information, see Suspending and resuming scaling processes in the Amazon EC2 Auto Scaling User Guide.

To terminate an instance in an Auto Scaling group

This example terminates the specified instance from the specified Auto Scaling group without updating the size of the group. Amazon EC2 Auto Scaling launches a replacement instance after the specified instance terminates.

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\"}"
        }
    ]
}

Example 1: To update the size limits of an Auto Scaling group

This example updates the specified Auto Scaling group with a minimum size of 2 and a maximum size of 10.

aws autoscaling update-auto-scaling-group \
    --auto-scaling-group-name my-asg \
    --min-size 2 \
    --max-size 10

This command produces no output.

For more information, see Setting capacity limits for your Auto Scaling group in the Amazon EC2 Auto Scaling User Guide.

Example 2: To add Elastic Load Balancing health checks and specify which Availability Zones and subnets to use

This example updates the specified Auto Scaling group to add Elastic Load Balancing health checks. This command also updates the value of --vpc-zone-identifier with a list of subnet IDs in multiple Availability Zones.

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"

This command produces no output.

For more information, see Elastic Load Balancing and Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide.

Example 3: To update the placement group and termination policy

This example updates the placement group and termination policy to use.

aws autoscaling update-auto-scaling-group \
    --auto-scaling-group-name my-asg \
    --placement-group my-placement-group \
    --termination-policies "OldestInstance"

This command produces no output.

For more information, see Auto Scaling groups in the Amazon EC2 Auto Scaling User Guide.

Example 4: To use the latest version of the launch template

This example updates the specified Auto Scaling group to use the latest version of the specified launch template.

aws autoscaling update-auto-scaling-group \
    --auto-scaling-group-name my-asg \
    --launch-template LaunchTemplateId=lt-1234567890abcde12,Version='$Latest'

This command produces no output.

For more information, see Launch templates in the Amazon EC2 Auto Scaling User Guide.

Example 5: To use a specific version of the launch template

This example updates the specified Auto Scaling group to use a specific version of a launch template instead of the latest or default version.

aws autoscaling update-auto-scaling-group \
    --auto-scaling-group-name my-asg \
    --launch-template LaunchTemplateName=my-template-for-auto-scaling,Version='2'

This command produces no output.

For more information, see Launch templates in the Amazon EC2 Auto Scaling User Guide.

Example 6: To define a mixed instances policy and enable capacity rebalancing

This example updates the specified Auto Scaling group to use a mixed instances policy and enables capacity rebalancing. This structure lets you specify groups with Spot and On-Demand capacities and use different launch templates for different architectures.

aws autoscaling update-auto-scaling-group \
    --cli-input-json file://~/config.json

Contents of 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"
        }
    }
}

This command produces no output.

For more information, see Auto Scaling groups with multiple instance types and purchase options in the Amazon EC2 Auto Scaling User Guide.