Change to aws_autoscaling_group removed lifecycle hook

[richardgavel]

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Terraform CLI and Terraform AWS Provider Version

terraform 0.13.6
provider.aws 3.34.0

Affected Resource(s)

• aws_autoscaling_group

Expected Behavior

The lifecycle hook was added via the initial_lifecycle_hook argument on the aws_autoscaling_group resource.

When updating the auto scaling group (in this case, by updating the launch template by updating instance type, which results in updating the auto scaling group to reference the newer version of the launch template, I expect the lifecycle hook to remain on the auto scaling group. Subsequent runs do not recreate the lifecycle hook.

What is also odd is I'm not sure how the lifecycle hook got added in the first place via an update operation. I see nothing in the code (

terraform-provider-aws/aws/resource_aws_autoscaling_group.go

Line 984 in bf230a0

func resourceAwsAutoscalingGroupUpdate(d *schema.ResourceData, meta interface{}) error {

) that would suggest it would add the lifecycle hook, only on a create operation.

Actual Behavior

The lifecycle hook no longer exists in AWS console.

• #0000

[anGie44]

Hi @richardgavel , thank you for raising this issue. It seems very closely related to #4714 , as I believe a change in the initial_lifecycle_hook argument should in fact force a new resource instead of an in-place update.

[github-actions]

This functionality has been released in v4.8.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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