Add missing instance_ip_mode argument to the network section of google_app_engine_flexible_app_version resource (Beta-only field)

[gwendal-lecren]

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Description

The instance_ip_mode attribute from the network section is missing.
This attribute basically allow to prevent instances from receiving an ephemeral external IP address:
https://cloud.google.com/appengine/docs/flexible/reference/app-yaml?tab=python#network_settings

New or Affected Resource(s)

• google_app_engine_flexible_app_version

Potential Terraform Configuration

resource "google_app_engine_flexible_app_version" "app" {
  ...
  network {
    name             = var.network
    subnetwork       = var.subnetwork
    session_affinity = true
    # Could be `internal` or `external` according to the documentation
    instance_ip_mode = "internal"
  }
  ...
}

References

This field is present in the Beta version of the API : https://cloud.google.com/appengine/docs/admin-api/reference/rest/v1beta/apps.services.versions#network

b/328654356

[SarahFrench]

Hi @gwendal-lecren, thanks for opening this issue! I took a look at the API that the google_app_engine_flexible_app_version resource maps to and I can't see a field for setting instance IP mode under network. Features that are available in gcloud aren't always available to the Terraform provider via the public APIs, or it may be that the API docs are out of date. Have you been able to set this field when using the AppEngine API directly?

[gwendal-lecren]

Hi @SarahFrench, thanks for getting back to me. I can see it in the v1beta API:
https://cloud.google.com/appengine/docs/admin-api/reference/rest/v1beta/apps.services.versions#network

But you're right, it is not available in the v1 API:
https://cloud.google.com/appengine/docs/admin-api/reference/rest/v1/apps.services.versions#network

In that case, shall it be available in the beta provider?
https://registry.terraform.io/providers/hashicorp/google-beta/latest/docs/resources/app_engine_flexible_app_version#network

Thanks

[SarahFrench]

Ah, thanks! Then yes we'd add this as a field in the beta provider. I'll update the issue to flag that to the service team this issue has been forwarded to