One or more nodes can be powered off for maintenance. If you have two or more nodes in your cluster, complete the following to shutdown your nodes. Problems with the cluster may occur if you do not shutdown the nodes properly. If you are performing maintenance such as a rolling restart of the cluster, then please refer to the Rolling Restart article.
Log into the console of your EPStack node and enter the following commands:
curl -XPOST 'http://localhost:9200/_cluster/nodes/_local/_shutdown'
You can confirm by checking the elasticsearch service:
service elasticsearch status
You can now proceed with either the restart or shutdown or the node.