google_compute_per_instance_config/google_compute_region_per_instance_config sends the wrong argument

[cg547]

The value set in the most_disruptive_allowed_action argument in the google_compute_per_instance_config / google_compute_region_per_instance_config resources is sent to the API in the mostDisruptiveActionAllowed JSON field, but the API uses the mostDisruptiveAllowedAction field.

This causes unwanted instance replacement, since the default value is REPLACE.

terraform-provider-google/google/resource_compute_per_instance_config.go

Line 403 in daa14bf

obj["mostDisruptiveActionAllowed"] = mostDisruptiveAction

terraform-provider-google/google/resource_compute_region_per_instance_config.go

Line 412 in daa14bf

obj["mostDisruptiveActionAllowed"] = mostDisruptiveAction

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Terraform Version

Terraform v1.3.3
on linux_amd64
+ provider registry.terraform.io/hashicorp/google v4.43.1
+ provider registry.terraform.io/hashicorp/google-beta v4.43.1
+ provider registry.terraform.io/hashicorp/random v3.3.2

Affected Resource(s)

• google_compute_per_instance_config
• google_compute_region_per_instance_config

Terraform Configuration Files

resource "google_compute_per_instance_config" "REDACTED" {
  name                             = "REDACTED"
  instance_group_manager           = google_compute_instance_group_manager.REDACTED.name
  zone                             = "REDACTED"
  minimal_action                   = "NONE"
  most_disruptive_allowed_action   = "NONE"
  remove_instance_state_on_destroy = true

  preserved_state {
    disk {
      device_name = "REDACTED"
      source      = google_compute_disk.REDACTED.id
    }
  }
}

Debug Output

---[ REQUEST ]---------------------------------------
POST /compute/v1/projects/REDACTED/zones/REDACTED/instanceGroupManagers/REDACTED/applyUpdatesToInstances?alt=json HTTP/1.1
Host: compute.googleapis.com
User-Agent: Terraform/1.3.3 (+https://www.terraform.io) Terraform-Plugin-SDK/2.10.1 terraform-provider-google/dev
Content-Length: 131
Content-Type: application/json
Accept-Encoding: gzip

{
 "instances": [
  "zones/REDACTED/instances/REDACTED"
 ],
 "minimalAction": "NONE",
 "mostDisruptiveActionAllowed": "NONE"
}

-----------------------------------------------------

Panic Output

Expected Behavior

The API call sets mostDisruptiveAllowedAction to NONE.

Actual Behavior

The API call sets mostDisruptiveActionAllowed to NONE.

Steps to Reproduce

1. terraform apply

Important Factoids

References

• google_compute_per_instance_config/google_compute_region_per_instance_config ignores the most_disruptive_allowed_action argument #12555

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