update pod and service cidr range in existing gke cluster

[NG26685]

how to update pod and service CIDR range in existing the cluster

[garisingh]

You cannot update the service CIDR at this point.
For the Pod CIDR, you can't update it, but you can use new/different CIDRs with new node pools: https://cloud.google.com/kubernetes-engine/docs/how-to/multi-pod-cidr