Hey,

I want to setup a HA Kubernetes cluster in GCE.
So far what I've used is kube-up.sh and was able to setup a 3 master cluster 
with masters (and workers) in different zones.

Basically followed:
https://kubernetes.io/docs/tasks/administer-cluster/highly-available-master/
http://blog.kubernetes.io/2017/02/highly-available-kubernetes-clusters.html


My question is: How do I upgrade the cluster later without downtime?

upgrade.sh 
(https://github.com/kubernetes/kubernetes/blob/master/cluster/gce/upgrade.sh) 
then doesn't like that my master is replicated.

So what's the expected workflow? Do I need to remove the replicas, upgrade and 
then create the replicas again?

Also how do I modify the system resources which are marked "reconcile"?

Thanks!

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