https://community.cloudera.com/t5/Support-Questions/Not-able-to-access-NiFi-web-UI/m-p/106402#M69280 <P>2016-05-28 11:19:49,622 INFO [main] org.apache.nifi.bootstrap.Command Apache NiFi is running at PID 14059 but is not responding to ping requests</P> Sat, 28 May 2016 18:20:34 GMT iyappan 2016-05-28T18:20:34Z