type: loadbalancer required externalTrafficPolicy: Local

[smarsh-tim]

Suggestion / Problem
I had trouble using my Kafka bootstrap/broker instances through the external load balancer when I set the externalTrafficPolicy: Local. I was able to connect initially, but then I would get stuff like this:

Bootstrap broker 10.100.10.3:9094 (id: -1 rack: null) disconnected (org.apache.kafka.clients.NetworkClient)

It's possible I only had issues because the cluster this is running in is pretty big - so it's likely having to hop? Unsure but the only parameter I changed which resolved my issue was setting externalTrafficPolicy: Cluster instead of Local.

Documentation Link
https://strimzi.io/docs/operators/latest/configuring.html#property-listener-config-traffic-policy-reference