To resolve this issue you need to check first all port opened on your server service listing to the port no, use command - sudo netstat -lpten check if any thing is running on 9000 or 90001, mostly java services required for set up is running on port 9000, and cloudera-scm-agent listner also runs on port 9000. to over come this issue you can re-configure theports as well in /etc/cloudera-scm-agent/config.ini by changing as below:-   # Hostname of the CM server. server_host=10.34.156.118 # Port that the CM server is listening on. server_port=7182 ## It should not normally be necessary to modify these. # Port that the CM agent should listen on. listening_port=9001   It should not normally be necessary to modify these. # Port that the CM agent should listen on 9001 and then restart the cloudera-scm-agent service by command:- $ service cloudera-scm-agent restart TO verify this port is not activated for other sshd service check Ports opened in /etc/ssh/sshd_config.   I hope this resolution will work for others too. Cheers, Ankit Gupta ... View more