Delete Terraform State By Simple Pattern

terraform-delete-state.ps1

param (
    [Parameter(Mandatory=$true)][string]$Pattern = "*"
)
$currentState = terraform state list

foreach($line in $currentState) {
    if ($line -like $Pattern) {
        terraform state rm $line
    }
}

I'm finding I have to use this a lot to clean up some of the messes left behind by k8s cluster provisioning when the cluster is deleted, but Terraform doesn't manage the state files correctly. You can call this like:

terraform-delete-state.ps1 module.eks.data.*

and it will delete everything that matches the prefix module.eks.data.. Obviously, you can put *s anywhere, but this is the most common use case.