Graylog: Cluster Elasticsearch Statistics
This check monitors the Elasticsearch cluster stats of a Graylog instance.
Beside the name, version and status it outputs the number of nodes, data nodes,
active shards, active primary shards, initializing shards, relocating shards
and unassigned shards. Further more, it shows timeouts, the number of indices,
and the store, ID cache and field data size.
Needs the datasource "Check state of Graylog" to be configured.
One service is created.