Description

Trying to import an cluster, but it fails while trying to add the already existing cluster security group.

So this line of code:

  vpc_config {
    security_group_ids      = compact(distinct(concat(var.cluster_additional_security_group_ids, [local.cluster_security_group_id])))

The issue comes with the fact that I'm trying to adopt this module and I'm importing resources created previously, including the cluster and the cluster security group.

while running a plan I get something like this:

      ~ vpc_config {
          ~ security_group_ids        = [
              + "sg-0f6f860f5357a8177",
                # (1 unchanged element hidden)
            ]
            # (6 unchanged attributes hidden)
        }

considering that I only have 1 additional security group, it seems like it's trying to add the cluster SG again, but if I take a look at the state file (after importing the cluster) I have this:

    vpc_config {
        cluster_security_group_id = "sg-0f6f860f5357a8177"
        endpoint_private_access   = true
        endpoint_public_access    = false
        public_access_cidrs       = []
        security_group_ids        = [
            "sg-0882dfbd2e7ba9a28", <-- additional security group
            "sg-0f6f860f5357a8177", <-- cluster security group, as seen above
        ]

So I'm not sure if this is an issue with the module or with the aws provider itself.

• ✋ I have searched the open/closed issues and my issue is not listed.

Versions

• Module version [Required]: 20.35.0

• Terraform version: Terraform v1.11.3

• Provider version(s): 5.94.1

Reproduction Code [Required]

Steps to reproduce the behavior:

1. Import existing eks_cluster and existing cluster security group
2. Terraform plan should show that it will try to add the sg id that already exists.
   I'm not using workspaces and I have cleared my local cache

Expected behavior

Terraform tries to add an existing sg to a state file that already has the sg

Actual behavior

Clean plan without the addition of the sg that already exists on the state file

Terminal Output Screenshot(s)

Additional context