Lifecycle hook to ignore load_balancers, target_group_arns

[mohsinzaheer25]

Is your request related to a new offering from AWS?

Is this functionality available in the AWS provider for Terraform?

• Yes ✅: Terraform AWS Provider Version 4.0

Is your request related to a problem? Please describe.

I have custom list for which i have to use aws_autoscaling_attachment terraform resource and terraform-aws-autoscaling module but module is not ignoring load_balancer and target_group_arns due to which it is always deleting the target_groups which are attached.

Describe the solution you'd like.

Add a variable to accept ignore changes option. Below is the solution that can be added to module to ignore changes and reference link

lifecycle { ignore_changes = [load_balancers, target_group_arns] }

Reference: https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/autoscaling_attachment

Describe alternatives you've considered.

No easy alternative solution if I use module as it will try to recreate ASG and will fail.

Additional context

Reference for solution.

Reference: https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/autoscaling_attachment

[antonbabenko]

Add a variable to accept ignore changes option.

This is not possible to do in Terraform. We can't use variables there, so we can't satisfy this in the module. Unfortunately.

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