Kibana fails with error EHOSTUNREACH while attempting to connect elasticsearch pod

Issue

• Following are the errors seen on the kibana pod logs

{"type":"log","@timestamp":"2018-01-30T04:19:17Z","tags":["error","elasticsearch"],"pid":15,"message":"Request error, retrying -- connect EHOSTUNREACH 192.xx.xx.xx:9200"}
{"type":"log","@timestamp":"2018-01-30T04:19:19Z","tags":["status","plugin:elasticsearch@1.0.0","error"],"pid":15,"state":"red","message":"Status changed from green to red - Request Timeout after 3000ms","prevState":"green","prevMsg":"Kibana index ready"}
{"type":"response","@timestamp":"2018-01-30T04:19:20Z","tags":[],"pid":15,"method":"head","statusCode":200,"req":{"url":"/","method":"head","headers":{"user-agent":"curl/7.29.0","host":"localhost:5601","accept":"*/*"},"remoteAddress":"127.0.0.1","userAgent":"127.0.0.1"},"res":{"statusCode":200,"responseTime":13,"contentLength":9},"message":"HEAD / 200 13ms - 9.0B"}

• Elasticsearch pod logs have the following errors as well

Contacting elasticsearch cluster 'elasticsearch' and wait for YELLOW clusterstate ...
Clustername: logging-es
Clusterstate: YELLOW
Number of nodes: 3
Number of data nodes: 3
.searchguard.logging-es-data-master-4pstbk3d index already exists, so we do not need to create one.
INFO: .searchguard.logging-es-data-master-4pstbk3d index state is YELLOW, it seems you miss some replicas
Populate config from /opt/app-root/src/sgconfig/