https://community.cloudera.com/t5/Support-Questions/Unable-to-start-the-node-manager/m-p/286051#M212183 <P><a href="https://community.cloudera.com/t5/user/viewprofilepage/user-id/19178">@saivenkatg55</a>&nbsp;</P><P>&nbsp;</P><P>I think there is a permission issue with the pid file&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="nodemanager.PNG" style="width: 999px;"><img src="https://community.cloudera.com/t5/image/serverpage/image-id/25786iDAC860038A75BCB3/image-size/large?v=v2&amp;px=999" role="button" title="nodemanager.PNG" alt="nodemanager.PNG" /></span></P><P>Can you check the permissions, if for any reason the are not as shown in the screenshot please run the <STRONG>chown</STRONG>&nbsp;as root to rectify that<BR /><FONT color="#FF6600"><STRONG># chown yarn:hadoop&nbsp;/var/run/hadoop-yarn/yarn/hadoop-yarn-nodemanager.pid</STRONG></FONT></P><P>Do that for all files in the directory whose permissions are not correct.<BR /><BR />HTH</P><P>&nbsp;</P><P>&nbsp;</P> Thu, 19 Dec 2019 21:55:56 GMT Shelton 2019-12-19T21:55:56Z