google_compute_instance_group_manager fails with stateful_external_ip and stateful_internal_ip

[amit-dube-b24]

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Terraform Version

terraform version
Terraform v1.3.7

Affected Resource(s)

• google_compute_instance_group_manager

Terraform Configuration Files

resource "google_compute_instance_group_manager" "mig" {
  provider = google-beta
  name     = "mig"

  project = ******

  base_instance_name = "app"
  zone = "europe-west3-a"

  version {
    name              = "version-1"
    instance_template = google_compute_instance_template.template.id. // this exist and has default network attached.
  }
  target_size = 2

  named_port {
    name = "http"
    port = 80
  }
  named_port {
    name = "https"
    port = 443
  }

  stateful_external_ip {
    delete_rule    = "ON_PERMANENT_INSTANCE_DELETION"
    interface_name = "default"
  }

  stateful_internal_ip {
    delete_rule    = "ON_PERMANENT_INSTANCE_DELETION"
    interface_name = "default"
  }
}

Debug Output

│ Error: Error updating managed group instances: googleapi: Error 400: Invalid value for field 'resource.versions[0].instanceTemplate': ''. Network interface [default] does not exist in the instance template shop-template., invalid
│
│ with module.mig[0].google_compute_instance_group_manager.mig,
│ on mig/mig.tf line 1, in resource "google_compute_instance_group_manager" "mig":
│ 1: resource "google_compute_instance_group_manager" "mig" {

Panic Output

│ Error: Error updating managed group instances: googleapi: Error 400: Invalid value for field 'resource.versions[0].instanceTemplate': ''. Network interface [default] does not exist in the instance template shop-template., invalid
│
│ with module.mig[0].google_compute_instance_group_manager.mig,
│ on mig/mig.tf line 1, in resource "google_compute_instance_group_manager" "mig":
│ 1: resource "google_compute_instance_group_manager" "mig" {

Expected Behavior

Terraform should apply successfully.

Actual Behavior

│ Error: Error updating managed group instances: googleapi: Error 400: Invalid value for field 'resource.versions[0].instanceTemplate': ''. Network interface [default] does not exist in the instance template shop-template., invalid
│
│ with module.mig[0].google_compute_instance_group_manager.mig,
│ on mig/mig.tf line 1, in resource "google_compute_instance_group_manager" "mig":
│ 1: resource "google_compute_instance_group_manager" "mig" {

Steps to Reproduce

create an instance template and add reference to that instance template.

1. terraform init
2. terraform apply

Important Factoids

References

• #0000

[edwardmedia]

@amit-dube-b24 help me to understand why the failure is linked to stateful_external_ip and stateful_internal_ip? Below is the error I refer to and seems different

Error: Error updating managed group instances: googleapi: Error 400: Invalid value for field 'resource.versions[0].instanceTemplate': ''. Network interface [default] does not exist in the instance template shop-template., invalid

[hao-nan-li]

I remember seeing in the design doc that the default value for interface_name should be "nic0". If that solves your problem we should probably update the doc.

[edwardmedia]

#13961

[edwardmedia]

@amit-dube-b24 using below config, it is fine with me. Can't repro your issue. Can you try?

resource "google_compute_target_pool" "igm-basic" {
  description      = "Resource created for Terraform acceptance testing"
  name             = "issue13961"
  session_affinity = "CLIENT_IP_PROTO"
}

resource "google_compute_instance_group_manager" "igm-basic" {
  description = "Terraform test instance group manager"
  name        = "issue13961"
  version {
    instance_template = google_compute_instance_template.igm-basic.self_link
    name              = "prod"
  }
  target_pools       = [google_compute_target_pool.igm-basic.self_link]
  base_instance_name = "tf-test-igm-basic"
  zone               = "us-central1-c"
  target_size        = 2
  stateful_disk {
    device_name = "my-stateful-disk"
    delete_rule = "ON_PERMANENT_INSTANCE_DELETION"
  }
  stateful_internal_ip {
    interface_name = "nic0"
    delete_rule = "ON_PERMANENT_INSTANCE_DELETION"
  }

  stateful_external_ip {
    interface_name = "nic0"
    delete_rule = "NEVER"
  }
}

[hao-nan-li]

I'm going to update the doc for what to put in the stateful_external_ip interface_name to make things clear.

[github-actions]

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