RHDEVDOCS-2679 Document "Move Elasticsearch Operator from Operator maturity level 3 to 4"

Author: rolfedh

logging/troubleshooting/cluster-logging-log-store-status.adoc

@@ -1,6 +1,6 @@
 :context: cluster-logging-elasticsearch
 [id="cluster-logging-log-store-status"]
-= Viewing the status of the log store
+= Viewing the status of the Elasticsearch log store
 include::modules/common-attributes.adoc[]
 
 toc::[]
@@ -16,3 +16,5 @@ You can view the status of the OpenShift Elasticsearch Operator and for a number
 include::modules/cluster-logging-log-store-status-viewing.adoc[leveloffset=+1]
 
 include::modules/cluster-logging-log-store-status-comp.adoc[leveloffset=+1]
+
+include::modules/ref_cluster-logging-elasticsearch-cluster-status.adoc[leveloffset=+1]

modules/ref_cluster-logging-elasticsearch-cluster-status.adoc

@@ -0,0 +1,56 @@
+:_module-type: REFERENCE
+
+[id="ref_cluster-logging-elasticsearch-cluster-status_{context}"]
+= Elasticsearch cluster status  
+
+[role="_abstract"]
+The Grafana dashboard in the *Monitoring* section of the {product-title} web console displays the status of the Elasticsearch cluster.
+
+To get the status of the OpenShift Elasticsearch cluster, visit the Grafana dashboard in the *Monitoring* section of the {product-title} web console at
+`<cluster_url>/monitoring/dashboards/grafana-dashboard-cluster-logging`.
+
+.Elasticsearch status fields
+
+`eo_elasticsearch_cr_cluster_management_state`:: Shows whether the Elasticsearch cluster is in a managed or unmanaged state. For example:
++
+[source,terminal]
+----
+eo_elasticsearch_cr_cluster_management_state{state="managed"} 1
+eo_elasticsearch_cr_cluster_management_state{state="unmanaged"} 0
+----
+
+`eo_elasticsearch_cr_restart_total`:: Shows the number of times the Elasticsearch nodes have restarted for certificate restarts, rolling restarts, or scheduled restarts. For example:
++
+[source,terminal]
+----
+eo_elasticsearch_cr_restart_total{reason="cert_restart"} 1
+eo_elasticsearch_cr_restart_total{reason="rolling_restart"} 1
+eo_elasticsearch_cr_restart_total{reason="scheduled_restart"} 3
+----
+
+`es_index_namespaces_total`:: Shows the total number of Elasticsearch index namespaces. For example:
++
+[source,terminal]
+----
+Total number of Namespaces.
+es_index_namespaces_total 5
+----
+
+`es_index_document_count`:: Shows the number of records for each namespace. For example:
++
+[source,terminal]
+----
+es_index_document_count{namespace="namespace_1"} 25
+es_index_document_count{namespace="namespace_2"} 10
+es_index_document_count{namespace="namespace_3"} 5
+----
+
+.The "Secret Elasticsearch fields are either missing or empty" message
+
+If Elasticsearch is missing the `admin-cert`, `admin-key`, `logging-es.crt`, or `logging-es.key` files, the dashboard shows a status message similar to the following example:
+
+[source,terminal]
+----
+message": "Secret \"elasticsearch\" fields are either missing or empty: [admin-cert, admin-key, logging-es.crt, logging-es.key]",
+"reason": "Missing Required Secrets",
+----