ElasticSearch Couchbase Replication Issue
Couchbase uses the IP that ElasticSearch returns as its host address. If you want ElasticSearch to publish the private IP instead of the public, you can override it with the network.publish_host setting in elasticsearch.yml. If the private IP isn't static, you might have to set it to the IP of a particular network interface, such as _eth0_. Take a look here for more details: https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-network.html