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An Elasticsearch node is embedded in the eXo Platform server (and is hosted in the same JVM).
The Elasticsearch node is declared as:
Master: To manage the cluster with only one node.
Data: To index and store documents.
Client: To serve and coordinate requests from the platform.
es.cluster.name of the Elasticsearch cluster is exoplatform-es.
es.network.host is set to 127.0.0.1. This prevents accesses from IP other than localhost and prevents other nodes to join the ES cluster.
The broadcast parameter
es.discovery.zen.ping.multicast.enabled: It is set to false.
es.http.port is set by default to the port 9200: Elasticseach is bound to port 9200 for HTTP connections.