Hello, 1. First add the hosts to your /etc/hosts files e.g in my case  $vi /etc/hosts 192.168.160.134 master.hadoop.com master 192.168.160.135 node1.hadoop.com node1 192.168.160.136 node2.hadoop.com node2   2. Restart cloudera-scm-agent on CM server $ sudo service cloudera-scm-agent restart   This should resolve your issue.   Regards, PC   ... View more