Merge pull request #26071 from gmarek/kube-up

Automatic merge from submit-queue

Make node-instance-group base names unique to prevent collisions

We create multiple IGMs for >1000 Node clusters. When we have a conflict on base name IGMs will fight over ownership of the VM that happen to have the name belonging to multiple IGMs.

This change will increase reliability of starting big clusters.

cc @wojtek-t @alex-mohr @roberthbailey @mikedanese

cluster/gce/util.sh

@@ -779,7 +779,7 @@ function create-nodes() {
         create "${group_name}" \
         --project "${PROJECT}" \
         --zone "${ZONE}" \
-        --base-instance-name "${NODE_INSTANCE_PREFIX}" \
+        --base-instance-name "${group_name}" \
         --size "${this_mig_size}" \
         --template "$template_name" || true;
     gcloud compute instance-groups managed wait-until-stable \