terragrunt destroy -target with before_hook present

[js-max]

Hi all,

I already went through 'Discussions' list/search box and I was not able to clarify my doubt.

─ stack
 ├── 01_folder
 ├── 02_folder
 └── 03_folder

Using the basic structure I will configure a dependency between folder 02 and 03.
Also I need to cleanup some resources using terragrunt state rm X when tearing down everything.

# terragrunt.hcl in 03_folder
...
dependency "02" {
  config_path = "../02_folder"
}
...
terraform {
  before_hook "remove_apps" {
    commands = ["destroy"]
    execute  = ["sh", "-c", "for i in $(terragrunt state list | grep -E 'kubernetes_secret|helm_release'); do terragrunt state rm $i; done"]
  }
}
...

So far so good.. It's working fine when I run the basic terragrunt run-all destroy CLI.

The issue arrives when within 02_folder I want to perform terragrunt destroy -target resource.X for that specific folder and terragrunt starts to execute before_hook present within 03_folder due to dependency.

Of course, that will damage/break the stack as we just wanted to remove a specific -target within 02_folder.

Since I'm using Terragrunt I was looking to work with dependency instead of Terraform data.

Any suggestion to overcome this?

Thanks!

---

Tracked in ticket #109619

[bethadele]

I'm checking with one of our Terragrunt experts to get some insight into the issue.

[denis256]

Hi,
AFAIK conditional execution of hooks in Terragrunt is not supported but can be implemented workarounds by defining environment variables to allow execution of hook or not

[js-max]

Hi @denis256 , is it possible to have an example from your side for that workaround?