do not tag already tagged resources

[balihb]

I'm using Terraform in tandem with user created resources in AWS. The problem is, that I can't tell AutoTag to not tag resources that I already tagged, so Terraform will detect changes on the resources it created and it is bloating the code seriously if I have to exclude AutoTag tags on every resource I created. Maybe it would also be possible to include a tag, that tells AutoTag not to tag a certain resource.

I've started looking at the code but haven't found a single point where I could check the already existing tags on every resource and skip tagging if needed.

[rayjanoka]

The only solution I'm aware of is to add this code to those terraform resources that are being tagged.

lifecycle {
    ignore_changes = [
      "tags.AutoTag_CreateTime",
      "tags.AutoTag_Creator",
      "tags.AutoTag_InvokedBy",
      "tags.%"
    ]
  }

We don't check to see if the tag exists before we add it so there is no simple way to do this.

[balihb]

back when I reported this terraform was unable to ignore changes on individual tags, but it is still fairly annoying to exclude tags on all the resources that have tags. oh well...