I can able to set password for elastic super user in single node cluster using x-pack security authentication with basic license (https://www.elastic.co/guide/en/elasticsearch/reference/6.2/setup-passwords.html). With the same license I can able to set elastic password for 3 node cluster setup? How can I proceed on this?
Once all nodes are part of the same cluster, they will share that authentication. So there's no need to do it on all 3 nodes, it's per cluster 
Thank you Mark! We will try this and come back if any issues!
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