https://community.cloudera.com/t5/Support-Questions/FAILED-to-start-HDFS-Namenode/m-p/45384#M52123 <P>Hello,</P><P>&nbsp;</P><P>If you see stderr output, then the supervisor.conf was already read. &nbsp;The permissions error is not relevant, I think, as the supervisor runs as root and has permission to access. &nbsp;The fact that you see stderr informaiton means the supervisor.conf was already read successfully and the process started&nbsp;as we see the "exec" line.</P><P>&nbsp;</P><P>Check your NameNode log (usually in /var/log/hadoop-hdfs) for details about the failure.</P><P>&nbsp;</P><P>From what you showed us, it appears the agent/supervisor started the NameNode but then it failed to stay running for more than a few seconds at most.</P><P>&nbsp;</P><P>Let us know what you see in the log.</P><P>&nbsp;</P><P>&nbsp;</P> Wed, 21 Sep 2016 16:51:50 GMT bgooley 2016-09-21T16:51:50Z