The default for image_family seems to be outdated

[chanux]

TL;DR

centos-8 the current default for image_family seems to no longer exist. Centos 8 reached EOL at the end of 2021 apparently.

Expected behavior

Use the module without changing image_family and everything goes well.

Observed behavior

Things fall apart with the following error:

│ Error: 1 error occurred:
│ 	* Could not find image or family centos-cloud/centos-8

Terraform Configuration

module "iap_bastion" {
  source  = "terraform-google-modules/bastion-host/google"
  version = "~> 4.0"

  name = "bastion1"
  project = local.project_id
  zone    = "us-central1-c"
  network = module.vpc.network_name
  subnet  = module.vpc.subnets_self_links[index(module.vpc.subnets_names, "snet1")]
  #image_family = "centos-8"
  members = [
    "group:[email protected]",
  ]
}

### Terraform Version

```sh
Terraform v1.1.4
on darwin_amd64
+ provider registry.terraform.io/hashicorp/google v4.7.0
+ provider registry.terraform.io/hashicorp/google-beta v4.7.0
+ provider registry.terraform.io/hashicorp/random v3.1.0

Additional information

No response

[catherinetcai]

This is what gcloud compute images list | grep centos returns:

gcloud compute images list | grep centos
centos-7-v20220303                                    centos-cloud         centos-7                                      READY
centos-stream-8-v20220303                             centos-cloud         centos-stream-8                               READY
centos-stream-9-v20220308                             centos-cloud         centos-stream-9                               READY

Looks like it can just default to centos-stream-8 or centos-stream-9.

[kevincantu]

GCP's note on this deprecation:
https://cloud.google.com/compute/docs/eol/centos-eol-guidance

Debian seems to work, too!

module "iap_bastion" {
  name    = "bastion"
  source  = "terraform-google-modules/bastion-host/google"
  version = "4.1.0"

  // https://cloud.google.com/compute/docs/images/os-details#debian
  image_project = "debian-cloud"
  image_family  = "debian-11"
  ...