Services: Filebeat added cluster name.

services/filebeat/filebeat.yml

@@ -1688,7 +1688,7 @@ monitoring.enabled: true
 # Sets the UUID of the Elasticsearch cluster under which monitoring data for this
 # Filebeat instance will appear in the Stack Monitoring UI. If output.elasticsearch
 # is enabled, the UUID is derived from the Elasticsearch cluster referenced by output.elasticsearch.
-#monitoring.cluster_uuid:
+monitoring.cluster_uuid: ${ELASTICSEARCH_CLUSTER_NAME}
 
 # Uncomment to send the metrics to Elasticsearch. Most settings from the
 # Elasticsearch output are accepted here as well.