I upgraded my ELK stack to version 6.5 today. Everything appeared to come back successfully, but upon trying to load Kibana, I just saw "Kibana server is not ready yet". Looking at my journal, I saw a message about "No shard available for [get [.kibana][doc][config:6.5.1]" within a stack trace.
I then saw Guillain's message in the thread Kibana server is not ready yet issue after upgrade to 6.5.0
He suggested using a different index, so I changed kibana.yml on the line:
While this did get Kibana running again, all our kibana work was lost, for example dashboards. Is there any way to get my old index from version 6.4 running in 6.5? I also looked at the advice under breaking changes in this article: https://www.elastic.co/guide/en/kibana/current/release-notes-6.5.0.html#known-issues-6.5.0
But I wasn't experiencing the permission error, at least I didn't see anything.