I apologize for the possible answered question but none of the answered seemed to help. This happened after no more than a restart of the server for a kernel update:
Elasticsearch: 6.4.0
[2018-09-17T15:09:05,036][WARN ][r.suppressed ] path: /.kibana/doc/config%3A6.4.0, params: {index=.kibana, id=config:6.4.0, type=doc}
org.elasticsearch.cluster.block.ClusterBlockException: blocked by: [SERVICE_UNAVAILABLE/1/state not recovered / initialized];
at org.elasticsearch.cluster.block.ClusterBlocks.globalBlockedException(ClusterBlocks.java:166)
[2018-09-17T15:09:07,206][WARN ][r.suppressed ] path: /.kibana/doc/config%3A6.4.0, params: {index=.kibana, id=config:6.4.0, type=doc}
org.elasticsearch.action.NoShardAvailableActionException: No shard available for [get [.kibana][doc][config:6.4.0]: routing [null]]
[2018-09-17T15:09:07,221][DEBUG][o.e.a.s.TransportSearchAction] [-w6AjjE] All shards failed for phase: [query]
[2018-09-17T15:09:07,221][WARN ][r.suppressed ] path: /.kibana/_search, params: {ignore_unavailable=true, index=.kibana, filter_path=aggregations.types.buckets}
org.elasticsearch.action.search.SearchPhaseExecutionException: all shards failed