I want to free up some backend services quotas. In order to do so, I believe I first have to delete the instance group. However, when I tried to delete the instance group that uses the service, I get the following message:
The deletion of the instance group failed. Error: An unknown error has occurred in Compute Engine: "undefined". Error code: "undefined"
I have also tried to just delete the backend service but it will spring up another one. In addition, I have tried to delete the load balancer associating the service and that fail also. Any thoughts?
As reported in the documentation:
"To delete a backend service, you must first make sure that the backend service is not being referenced by any URL maps. If a URL map is currently referencing a backend service, you must delete the URL map to remove the reference."