https://community.cloudera.com/t5/Support-Questions/Unable-to-start-the-node-manager/m-p/286018#M212156 <P>Please check if this file exists /var/run/hadoop-yarn/yarn/hadoop-yarn-nodemanager.pid . If not create the directory</P><P>&nbsp;</P><P>mkdir /var/run/hadoop-yarn/yarn/</P><P>chown -R yarn:hadoop /var/run/hadoop-yarn/yarn/</P><P>touch hadoop-yarn-nodemanager.pid</P><P>chown yarn:hadoop /var/run/hadoop-yarn/yarn/hadoop-yarn-nodemanager.pid</P><P>&nbsp;</P><P>This will work.</P><P>&nbsp;</P><P>&nbsp;</P> Thu, 19 Dec 2019 14:26:34 GMT chennuri_gouris 2019-12-19T14:26:34Z