@clint,  I tried picking the IP from ifconfig -a command and added that to hosts file as below <IP><FQDN (at that one came in ifconfig -a)><shortname>   I used hostname and hostname -f to find the shortname and FQDN.  I still get the following error during installation    Installation failed. Failed to receive heartbeat from agent. Ensure that the host's hostname is configured properly. Ensure that port 7182 is accessible on the Cloudera Manager server (check firewall rules). Ensure that ports 9000 and 9001 are free on the host being added. Check agent logs in /var/log/cloudera-scm-agent/ on the host being added (some of the logs can be found in the installation details).     I have enabled all TCP ports and ICMP ports.  I am not sure what am I missing.  Could you please help should I be checking something else? ... View more