Ansible Tower issues and fixes

1)

Issue:

UNREACHABLE! => {"changed": false, "msg": "kerberos: authGSSClientInit() failed: (('Unspecified GSS failure.  Minor code may provide more information', 851968), (\"Can't find client principal user@domain in cache collection\", -1765328243))", "unreachable": true}

Fix:

Perform the following steps on all ansible node(s)

1. sudo su awx
2. kinit user@domain.com and enter password
3. ensure that job isolation is disabled (More information on job isolation can be found at Configure Tower in Tower-Jobs)