NiFi: Cluster shows disconnected

[#1]

2 node Nifi cluster running on kubernetes:

- Cluster has been up and running and all of a sudden this morning it shows disconnected.

- Tried deleting and recreating the pods.

- Checked connection to zookeeper and it looks good.

- Destroyed stateful sets and recreated same issue.

- Cleaned up zookeeper but same issue.

Any suggestions.....

[#2]

If you restart one of the nodes, what errors/warnings are show in nifi-app.log?