Nodes not discovering in ELK 7.0

I running two ES instances. I am using the ELK stack version 7.0. In kibana only the master is shown and the other node is not shown. How can I get the other node? In the elasticsearch.yml i have given the same cluster name. When I curl the ES instances I get the Cluster uuid diffferent. How can I correct this?

This note in the manual describes how to resolve the situation.

Thanks @DavidTurner