[cetic/nifi] Cannot admin the cluster if the ingress redirects me to a disconnected node

[weltonrodrigo]

STEPS TO REPRODUCE:

1. create a 2 replica cluster
2. randomly disconnect one of the nodes (on the cluster menu)
3. refresh the page until you see "Disconnected" on the top left, below nifi logo.

This is because the ingress blindly load balances between nodes of the cluster, so if you got a disconnected node, you cannot do any maintenance on the cluster.

WORKAROUND:

• just refresh the page until you see a red X/X number indicating a degraded cluster. That means you are now accessing a node still connected to the cluster.
• Try to access the cluster menu until you succeed.

I suppose a good solution would be to provide ingresses, in addition to the one already created, that connect directly to a node. The same applies for a NodePort service.