Unable to rename backend

luismendezescobar · April 14, 2023, 3:48am

I’m using the terraform google module to create a load balancer pointing out to a serverless endpoint group using cloud run.

github.com

terraform-google-modules/terraform-google-lb-http/blob/master/modules/serverless_negs/README.md

# Global HTTP Load Balancer Terraform Module for Serverless NEGs

This submodule allows you to create Cloud HTTP(S) Load Balancer with
[Serverless Network Endpoint Groups (NEGs)](https://cloud.google.com/load-balancing/docs/negs/serverless-neg-concepts)
and place serverless services from Cloud Run, Cloud Functions and App Engine
behind a Cloud Load Balancer.


## Compatibility

This module is meant for use with Terraform 0.13+ and tested using Terraform 1.0+. If you find incompatibilities using Terraform >=0.13, please open an issue. If you haven't
[upgraded](https://www.terraform.io/upgrade-guides/0-13.html) and need a Terraform
0.12.x-compatible version of this module, the last released version
intended for Terraform 0.12.x is [v4.5.0](https://registry.terraform.io/modules/GoogleCloudPlatform/lb-http/google/4.5.0).

## Usage

```HCL
module "lb-http" {
  source            = "GoogleCloudPlatform/lb-http/google//modules/serverless_negs"

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It works fine for the creation. But when I try to rename the backend or change it for another one I get the following error:

Error when reading or editing RegionNetworkEndpointGroup: googleapi: Error 400: The network_endpoint_group resource ‘projects/qa-server/regions/us-central1/networkEndpointGroups/backend-game-qa’ is already being used by ‘projects/qa-server/global/backendServices/backend-game-qa’, resourceInUseByAnotherResource

So I had to remove the endpoint group from the backend directly from the console and run the console again.

Is it possible to do this directly using terraform instead?

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Unable to rename backend

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