Is it necessary to recreate a Google Container Eng

Question

After reading this earlier question, I have some follow-up questions. I have a Google Container Engine cluster which lacks the Cloud Monitoring API Access permission. According to this post I cannot enable it.

The referenced post is one year old. Just to be sure: Is it still correct? To enable (for example) the Cloud Monitoring API for my GKE cluster, we would have to recreate the entire cluster because there is no way to change these permissions after cluster creation?

Also, if I have to do this it seems to me that it would be best to enable all API's with the broadest possible permissions, just in case that I want to start using one of them in the future on my production cluster when it's in use and I can't very well take the entire thing down and recreate it then. Are there any drawbacks to this approach?

Answer 1

You can keep the same cluster, but create a new Node Pool with the new scopes you need (and then delete your old "default" Node Pool):

gcloud container node-pools create new-np --cluster $CLUSTER --scopes monitoring

The drawback to enabling all permissions is if you use the same service account in many different places. For example, if my service-account-1 needs to access Cloud Monitoring from this GKE cluster, but it is also being used on an unrelated GCE VM, I might not want that GCE VM to have access to my Cloud Monitoring data.