Kibana doesn't start after upgrading from 6.6.0 to 6.8.10 version

Elastic Stack Kibana
1

Hello,

I would need some help here. i have recently upgrade Elastic and kibana from version 6.6.0 to 6.8.0 however elasticsearch upgrade went good. i didn't reindex any indices. however after upgrading kibana version. kibana UI is not reachable.
i am getting error,
kibana parse error "HPE_INVALID_EOF_STATE" and type":"log","@timestamp":"2020-07-07T19:07:25Z","tags":["status","plugin:elasticsearch@6.8.10","error"],"pid":18370,"state":"red","message":"Status changed from yellow to red - Request Timeout after 3000ms","prevState":"yellow","prevMsg":"Waiting for Elasticsearch

2

Does a

curl -X GET "localhost:9200/_cluster/health?pretty"

show a good cluster?

3

+1 to ^. On the Kibana side it's saying the socket hung up unexpectedly, some ideas worth looking into are self signed ssl certificates, that kibana's able to get a response in < 3 seconds, a second pass at kibana.yml may help too if you want to share the http/ssl portion.

Quick question - is the server still active? There were some issues with over-verbose error logs in 6.8 that were limited to a single http requests so it may leave us with the request timeout.

4

Cluster is green but still, it is not working.