https://community.cloudera.com/t5/Support-Questions/Zeppelin-UI-Welcome-page-is-blank/m-p/108064#M70919 <P>This issue was caused by port forwarding. Websocket used in Zeppelin UI was not able to communicate with backend. </P> Wed, 26 Apr 2017 01:56:56 GMT ajay_kumar 2017-04-26T01:56:56Z