AWS SDK Version 2 for .NET
API Reference

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.NET Framework 4.5
 
Container for the parameters to the PutLifecycleHook operation. Creates or updates a lifecycle hook for the specified Auto Scaling Group.

A lifecycle hook tells Auto Scaling that you want to perform an action on an instance that is not actively in service; for example, either when the instance launches or before the instance terminates.

This step is a part of the procedure for adding a lifecycle hook to an Auto Scaling group:

  1. (Optional) Create a Lambda function and a rule that allows CloudWatch Events to invoke your Lambda function when Auto Scaling launches or terminates instances.
  2. (Optional) Create a notification target and an IAM role. The target can be either an Amazon SQS queue or an Amazon SNS topic. The role allows Auto Scaling to publish lifecycle notifications to the target.
  3. Create the lifecycle hook. Specify whether the hook is used when the instances launch or terminate.
  4. If you need more time, record the lifecycle action heartbeat to keep the instance in a pending state.
  5. If you finish before the timeout period ends, complete the lifecycle action.

For more information, see Auto Scaling Lifecycle in the Auto Scaling Developer Guide.

If you exceed your maximum limit of lifecycle hooks, which by default is 50 per region, the call fails. For information about updating this limit, see AWS Service Limits in the Amazon Web Services General Reference.

Inheritance Hierarchy

System.Object
  Amazon.Runtime.AmazonWebServiceRequest
    Amazon.AutoScaling.AmazonAutoScalingRequest
      Amazon.AutoScaling.Model.PutLifecycleHookRequest

Namespace: Amazon.AutoScaling.Model
Assembly: AWSSDK.dll
Version: (assembly version)

Syntax

C#
public class PutLifecycleHookRequest : AmazonAutoScalingRequest
         IRequestEvents

The PutLifecycleHookRequest type exposes the following members

Constructors

NameDescription
Public Method PutLifecycleHookRequest()

Properties

NameTypeDescription
Public Property AutoScalingGroupName System.String Gets and sets the property AutoScalingGroupName.

The name of the Auto Scaling group to which you want to assign the lifecycle hook.

Public Property DefaultResult System.String Gets and sets the property DefaultResult.

Defines the action the Auto Scaling group should take when the lifecycle hook timeout elapses or if an unexpected failure occurs. This parameter can be either CONTINUE or ABANDON. The default value is ABANDON.

Public Property HeartbeatTimeout System.Int32 Gets and sets the property HeartbeatTimeout.

The amount of time, in seconds, that can elapse before the lifecycle hook times out. When the lifecycle hook times out, Auto Scaling performs the default action. You can prevent the lifecycle hook from timing out by calling RecordLifecycleActionHeartbeat. The default is 3600 seconds (1 hour).

Public Property LifecycleHookName System.String Gets and sets the property LifecycleHookName.

The name of the lifecycle hook.

Public Property LifecycleTransition System.String Gets and sets the property LifecycleTransition.

The instance state to which you want to attach the lifecycle hook. For a list of lifecycle hook types, see DescribeLifecycleHookTypes.

This parameter is required for new lifecycle hooks, but optional when updating existing hooks.

Public Property NotificationMetadata System.String Gets and sets the property NotificationMetadata.

Contains additional information that you want to include any time Auto Scaling sends a message to the notification target.

Public Property NotificationTargetARN System.String Gets and sets the property NotificationTargetARN.

The ARN of the notification target that Auto Scaling will use to notify you when an instance is in the transition state for the lifecycle hook. This target can be either an SQS queue or an SNS topic. If you specify an empty string, this overrides the current ARN.

The notification messages sent to the target include the following information:

  • AutoScalingGroupName. The name of the Auto Scaling group.
  • AccountId. The AWS account ID.
  • LifecycleTransition. The lifecycle hook type.
  • LifecycleActionToken. The lifecycle action token.
  • EC2InstanceId. The EC2 instance ID.
  • LifecycleHookName. The name of the lifecycle hook.
  • NotificationMetadata. User-defined information.

This operation uses the JSON format when sending notifications to an Amazon SQS queue, and an email key/value pair format when sending notifications to an Amazon SNS topic.

When you specify a notification target, Auto Scaling sends it a test message. Test messages contains the following additional key/value pair: "Event": "autoscaling:TEST_NOTIFICATION".

Public Property RoleARN System.String Gets and sets the property RoleARN.

The ARN of the IAM role that allows the Auto Scaling group to publish to the specified notification target.

This parameter is required for new lifecycle hooks, but optional when updating existing hooks.

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

.NET for Windows Store apps:
Supported in: Windows 8.1, Windows 8

.NET for Windows Phone:
Supported in: Windows Phone 8.1, Windows Phone 8