PDB prevents node draining

[jimmyjones2]

The PDB's have minAvailable set to 100%. As per the docs the means:

you are requiring zero voluntary evictions. When you set zero voluntary evictions for a workload object such as ReplicaSet, then you cannot successfully drain a Node running one of those Pods. If you try to drain a Node where an unevictable Pod is running, the drain never completes.

I don't think this is desirable!