If you see this error:
"Can't Contact Database: Host 'localhost.localdomain' is not allowed to connect to this MySQL server"
This error sometimes occurs in a Red Hat installation. The Red Hat host table fully-qualifies localhost as localhost.localdomain, a host that is not in the user database that is installed with MySQL. Follow these instructions:
1. Login (as root) to the Supervisor host:
# ssh -l root supervisor_host
2. Access your MySQL server, you may need to enter an admin pass-word:
# mysql --user=root mysql
3. Grant all privileges to root@localhost.localdomain:
mysql> GRANT ALL PRIVILEGES ON *.* TO root@localhost.localdomain WITH GRANT OPTION; mysql> quit
4. Restart the Supervisor:
# /sbin/service supervisor restart
