instance template module: attempt to use `subnetwork_project` variabe fails with API error for not supported cross-project reference about terraform-google-vm

[ocervell]

I'm running into this, and it is an issue for creating instance templates for MIG that will bind to a shared VPC.

Any updates on this ? Do we know if the issue is in the API, Google provider, or Terraform module ?

[morgante]

Haven't tested it recently, but #52 might have fixed it. Can you dive in and take a look?

[aaron-lane]

@ocervell can you verify if this was fixed by #52?

[DDOlafGrote]

@aaron-lane It seems that the bug still exists. Do you have an idea or a current state of this bug?

We received the following error after terraform apply:

google_compute_instance_template.appserver: Creating... Error: Error creating instance template: googleapi: Error 400: Invalid value for field 'resource.properties.networkInterfaces[0].subnetwork': 'projects/shared-vpc/regions/europe-west4/subnetworks/subnet-name-xxx'. Cross-project references for this resource are not allowed., invalid

We use the following provider versions:

provider "google" {
  region  = var.gcp_region
  project = var.gcp_project_id
  version = "= 3.15.0"
}

provider "google-beta" {
  region  = var.gcp_region
  project = var.gcp_project_id
  version = "= 3.15.0"
}

terraform {
  required_version = "= 0.12.23"
  ....
}

[aaron-lane]

@DDOlafGrote unfortunately I no longer maintain this module.

[DDOlafGrote]

@aaron-lane Thx for your feedback. For your information: I solved the problem by increasing the Google provider to 3.24.0.

From my perspective, this issue will be fixed by Google provider 3.24.0.

provider "google" {
  region  = var.gcp_region
  project = var.gcp_project_id
  version = "= 3.24.0"
}
 
provider "google-beta" {
  region  = var.gcp_region
  project = var.gcp_project_id
  version = "= 3.24.0"
}