I had added custom service using steps described here https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=38571133. It was successful, but then I was not able to start cluster. Then I removed custom services that I had added earlier. But still I am not able to start cluster.
My configuration was Ambari 1.7 with HDP 2.2 on CentOS 6.4 on Amazon aws multi node cluster.
It ended up with following exception:
Fail: Execution of ‘groupadd ”’ returned 3. groupadd: ” is not a valid group name
Error: Error: Unable to run the custom hook script [‘/usr/bin/python2.6′, ‘/var/lib/ambari-agent/cache/stacks/HDP/2.0.6/hooks/before-ANY/scripts/hook.py’, ‘ANY’, ‘/var/lib/ambari-agent/data/command-1486.json’, ‘/var/lib/ambari-agent/cache/stacks/HDP/2.0.6/hooks/before-ANY’, ‘/var/lib/ambari-agent/data/structured-out-1486.json’, ‘INFO’, ‘/var/lib/ambari-agent/data/tmp’]