here is the history of issues I've had with ELK the last days:
ELK stopped running out of the blue a few days ago showing errors like
org.elasticsearch.action.NoShardAvailableActionException: No shard available for [get [.kibana][_doc][space:default]: routing [null]]
org.elasticsearch.action.search.SearchPhaseExecutionException: Search rejected due to missing shards [[.kibana_task_manager_1]].
[2020-08-11T12:53:04,688][DEBUG][o.e.a.s.TransportSearchAction] [django] All shards failed for phase: [query]
I restarted ElasticSearch and removed all unassigned shards.
I was presented with a "No spaces match search criteria" on the web front-end afterwards:
So I restarted the ElasticSearch service.
Though the ELK stack is running again and the web front-end is accessible, all the index patterns are missing surprisingly. So I tried to create a new index pattern, but basically nothing happened after having selected the time field and hitting the "Create index pattern" button. No error message, no entries in the elasticsearch.log file, no errors in the browser console. Nothing.
I've cleared the browser cache and removed cookies, but to no avail.
I've neither found another topic in this forum fitting these circumstances.
Any idea or help would be highly appreciated!