aws_autoscaling_group ignore_changes on min/max size not working as expected

[gservat]

Terraform Version

v0.9.10

Affected Resource(s)

• aws_autoscaling_group

Terraform Configuration Files

resource "aws_autoscaling_group" "groups" {
   count = "${length(var.availability_zones)}"

   min_size = 1
   max_size = 2

   ...
   lifecycle {
     ignore_changes = ["min_size", "max_size"]
   }
   ...
}

I made a change to the max size on the AWS console for one of the ASGs.

Expected Behavior

No changes to infrastructure since max_size is in the ignore_changes list.

Actual Behavior

Issuing a terraform plan shows changes to be made to the max_size.

~ module.asg.aws_auto_scaling_group.groups.0
    max_size: "5" => "4"

Steps to Reproduce

1. Create asg.tf with an aws_autoscaling_group definition that has include_changes = ["min_size", "max_size"]
2. Once the ASG is created, attempt to update the min or max via AWS console
3. Run terraform plan - if successfully reproduced it should show changes to be made.

References

hashicorp/terraform#5627

[gservat]

Apologies. Embarrassing PEBKAC issue. ignore_changes works fine 😄

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!