Let's say you have an existing releases that are managed by helmfile and helmfile.yaml:
$ helmfile -f helmfile.yaml apply
You can migrate the releases into your terraform project by using terraform import.
First, you edit your .tf file to add a helmfile_release_set:
resource "helmfile_release_set" "myapps" {
content = file("./helmfile.yaml")
}
Run terraform import with the path to helmfile.yaml as the last argument:
$ terraform import helmfile_release_set.myapps ./helmfile.yaml
Run terraform plan:
$ terraform plan
helmfile_release_set.myapps: Refreshing state... [id=btmjojkllhcl73m9no0g]
------------------------------------------------------------------------
No changes. Infrastructure is up-to-date.
This means that Terraform did not detect any differences between your
configuration and real physical resources that exist. As a result, no
actions need to be performed.
Ensure that there's no diff shown in the plan result.
If there's any, you should retry updating resource "helmfile_releaset_set" "myapps" in your .tf file and rerunning terraform plan until there is no diff anymore.