Amazon EC2 Auto Scaling event reference - Amazon EC2 Auto Scaling
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Amazon EC2 Auto Scaling event reference

Using Amazon EventBridge, you can create rules that match incoming events and route them to targets for processing.

Example events

The following examples show events for Amazon EC2 Auto Scaling. Events are produced on a best-effort basis.

EC2 Instance-launch Lifecycle Action

In this example event, Amazon EC2 Auto Scaling moved an instance to a Pending:Wait state due to a lifecycle hook.

Note

Amazon EC2 Auto Scaling supports providing Origin and Destination in events for lifecycle hooks, if that information is available. For more information, see Warm pool event types and patterns.

{ "version": "0", "id": "12345678-1234-1234-1234-123456789012", "detail-type": "EC2 Instance-launch Lifecycle Action", "source": "aws.autoscaling", "account": "123456789012", "time": "yyyy-mm-ddThh:mm:ssZ", "region": "us-west-2", "resources": [ "auto-scaling-group-arn" ], "detail": { "LifecycleActionToken": "87654321-4321-4321-4321-210987654321", "AutoScalingGroupName": "my-asg", "LifecycleHookName": "my-lifecycle-hook", "EC2InstanceId": "i-1234567890abcdef0", "LifecycleTransition": "autoscaling:EC2_INSTANCE_LAUNCHING", "NotificationMetadata": "additional-info" } }

EC2 Instance Launch Successful

In this example event, Amazon EC2 Auto Scaling successfully launched an instance.

{ "version": "0", "id": "12345678-1234-1234-1234-123456789012", "detail-type": "EC2 Instance Launch Successful", "source": "aws.autoscaling", "account": "123456789012", "time": "yyyy-mm-ddThh:mm:ssZ", "region": "us-west-2", "resources": [ "auto-scaling-group-arn", "instance-arn" ], "detail": { "StatusCode": "InProgress", "Description": "Launching a new EC2 instance: i-12345678", "AutoScalingGroupName": "my-auto-scaling-group", "ActivityId": "87654321-4321-4321-4321-210987654321", "Details": { "Availability Zone": "us-west-2b", "Subnet ID": "subnet-12345678" }, "RequestId": "12345678-1234-1234-1234-123456789012", "StatusMessage": "", "EndTime": "yyyy-mm-ddThh:mm:ssZ", "EC2InstanceId": "i-1234567890abcdef0", "StartTime": "yyyy-mm-ddThh:mm:ssZ", "Cause": "description-text" } }

EC2 Instance Launch Unsuccessful

In this example event, Amazon EC2 Auto Scaling failed to launch an instance.

{ "version": "0", "id": "12345678-1234-1234-1234-123456789012", "detail-type": "EC2 Instance Launch Unsuccessful", "source": "aws.autoscaling", "account": "123456789012", "time": "yyyy-mm-ddThh:mm:ssZ", "region": "us-west-2", "resources": [ "auto-scaling-group-arn", "instance-arn" ], "detail": { "StatusCode": "Failed", "AutoScalingGroupName": "my-auto-scaling-group", "ActivityId": "87654321-4321-4321-4321-210987654321", "Details": { "Availability Zone": "us-west-2b", "Subnet ID": "subnet-12345678" }, "RequestId": "12345678-1234-1234-1234-123456789012", "StatusMessage": "message-text", "EndTime": "yyyy-mm-ddThh:mm:ssZ", "EC2InstanceId": "i-1234567890abcdef0", "StartTime": "yyyy-mm-ddThh:mm:ssZ", "Cause": "description-text" } }

EC2 Instance-terminate Lifecycle Action

In this example event, Amazon EC2 Auto Scaling moved an instance to a Terminating:Wait state due to a lifecycle hook.

Note

Amazon EC2 Auto Scaling supports providing Origin and Destination in events for lifecycle hooks, if that information is available. For more information, see Warm pool event types and patterns.

{ "version": "0", "id": "12345678-1234-1234-1234-123456789012", "detail-type": "EC2 Instance-terminate Lifecycle Action", "source": "aws.autoscaling", "account": "123456789012", "time": "yyyy-mm-ddThh:mm:ssZ", "region": "us-west-2", "resources": [ "auto-scaling-group-arn" ], "detail": { "LifecycleActionToken":"87654321-4321-4321-4321-210987654321", "AutoScalingGroupName":"my-asg", "LifecycleHookName":"my-lifecycle-hook", "EC2InstanceId":"i-1234567890abcdef0", "LifecycleTransition":"autoscaling:EC2_INSTANCE_TERMINATING", "NotificationMetadata":"additional-info" } }

EC2 Instance Terminate Successful

In this example event, Amazon EC2 Auto Scaling successfully terminated an instance.

{ "version": "0", "id": "12345678-1234-1234-1234-123456789012", "detail-type": "EC2 Instance Terminate Successful", "source": "aws.autoscaling", "account": "123456789012", "time": "yyyy-mm-ddThh:mm:ssZ", "region": "us-west-2", "resources": [ "auto-scaling-group-arn", "instance-arn" ], "detail": { "StatusCode": "InProgress", "Description": "Terminating EC2 instance: i-12345678", "AutoScalingGroupName": "my-auto-scaling-group", "ActivityId": "87654321-4321-4321-4321-210987654321", "Details": { "Availability Zone": "us-west-2b", "Subnet ID": "subnet-12345678" }, "RequestId": "12345678-1234-1234-1234-123456789012", "StatusMessage": "", "EndTime": "yyyy-mm-ddThh:mm:ssZ", "EC2InstanceId": "i-1234567890abcdef0", "StartTime": "yyyy-mm-ddThh:mm:ssZ", "Cause": "description-text" } }

EC2 Instance Terminate Unsuccessful

In this example event, Amazon EC2 Auto Scaling failed to terminate an instance.

{ "version": "0", "id": "12345678-1234-1234-1234-123456789012", "detail-type": "EC2 Instance Terminate Unsuccessful", "source": "aws.autoscaling", "account": "123456789012", "time": "yyyy-mm-ddThh:mm:ssZ", "region": "us-west-2", "resources": [ "auto-scaling-group-arn", "instance-arn" ], "detail": { "StatusCode": "Failed", "AutoScalingGroupName": "my-auto-scaling-group", "ActivityId": "87654321-4321-4321-4321-210987654321", "Details": { "Availability Zone": "us-west-2b", "Subnet ID": "subnet-12345678" }, "RequestId": "12345678-1234-1234-1234-123456789012", "StatusMessage": "message-text", "EndTime": "yyyy-mm-ddThh:mm:ssZ", "EC2InstanceId": "i-1234567890abcdef0", "StartTime": "yyyy-mm-ddThh:mm:ssZ", "Cause": "description-text" } }

EC2 Auto Scaling Instance Refresh Checkpoint Reached

In this example event, the number of instances that have been replaced reaches the percentage threshold defined for the checkpoint.

{ "version": "0", "id": "12345678-1234-1234-1234-123456789012", "detail-type": "EC2 Auto Scaling Instance Refresh Checkpoint Reached", "source": "aws.autoscaling", "account": "123456789012", "time": "yyyy-mm-ddThh:mm:ssZ", "region": "us-west-2", "resources": [ "auto-scaling-group-arn" ], "detail": { "InstanceRefreshId": "ab00cf8f-9126-4f3c-8010-dbb8cad6fb86", "AutoScalingGroupName": "my-auto-scaling-group", "CheckpointPercentage": "50", "CheckpointDelay": "300" } }

EC2 Auto Scaling Instance Refresh Started

In this example event, the status of an instance refresh changes to InProgress.

{ "version": "0", "id": "12345678-1234-1234-1234-123456789012", "detail-type": "EC2 Auto Scaling Instance Refresh Started", "source": "aws.autoscaling", "account": "123456789012", "time": "yyyy-mm-ddThh:mm:ssZ", "region": "us-west-2", "resources": [ "auto-scaling-group-arn" ], "detail": { "InstanceRefreshId": "c613620e-07e2-4ed2-a9e2-ef8258911ade", "AutoScalingGroupName": "my-auto-scaling-group" } }

EC2 Auto Scaling Instance Refresh Succeeded

In this example event, the status of an instance refresh changes to Succeeded.

{ "version": "0", "id": "12345678-1234-1234-1234-123456789012", "detail-type": "EC2 Auto Scaling Instance Refresh Succeeded", "source": "aws.autoscaling", "account": "123456789012", "time": "yyyy-mm-ddThh:mm:ssZ", "region": "us-west-2", "resources": [ "auto-scaling-group-arn" ], "detail": { "InstanceRefreshId": "c613620e-07e2-4ed2-a9e2-ef8258911ade", "AutoScalingGroupName": "my-auto-scaling-group" } }

EC2 Auto Scaling Instance Refresh Failed

In this example event, the status of an instance refresh changes to Failed.

{ "version": "0", "id": "12345678-1234-1234-1234-123456789012", "detail-type": "EC2 Auto Scaling Instance Refresh Failed", "source": "aws.autoscaling", "account": "123456789012", "time": "yyyy-mm-ddThh:mm:ssZ", "region": "us-west-2", "resources": [ "auto-scaling-group-arn" ], "detail": { "InstanceRefreshId": "c613620e-07e2-4ed2-a9e2-ef8258911ade", "AutoScalingGroupName": "my-auto-scaling-group" } }

EC2 Auto Scaling Instance Refresh Cancelled

In this example event, the status of an instance refresh changes to Cancelled.

{ "version": "0", "id": "12345678-1234-1234-1234-123456789012", "detail-type": "EC2 Auto Scaling Instance Refresh Cancelled", "source": "aws.autoscaling", "account": "123456789012", "time": "yyyy-mm-ddThh:mm:ssZ", "region": "us-west-2", "resources": [ "auto-scaling-group-arn" ], "detail": { "InstanceRefreshId": "c613620e-07e2-4ed2-a9e2-ef8258911ade", "AutoScalingGroupName": "my-auto-scaling-group" } }