When you scale Elasticsearch by adding additional nodes in traditional storage, you must update the Elasticsearch configuration.
To modify Elasticsearch configuration:
Log in to the Sentinel server as the novell user.
Open the /etc/opt/novell/sentinel/config/elasticsearch-index.properties file.
Add the external Elasticsearch nodes IP addresses to the property ServerList.
For example: ServerList=<ElasticSearch IP1>:<Port>,<ElasticSearch IP2>:<Port>