Troubleshooting:Unable to connect to the master backend server
Q: When trying access the program guide or recordings from the frontend, I am told that the backend is not running (or some variation) but I know it is.
A: There could be a few reasons this occurs. The first is that the IP address in mythtv-setup isn't correct.
Another possibility is that you don't have permission to access the MySQL tables using the username and password you entered into mythtv-setup. The following commands will change the mysql password to "mythtv" for user 'mythtv':
# mysql -u root mysql mysql> UPDATE user SET Password=PASSWORD('mythtv') WHERE user='mythtv'; mysql> FLUSH PRIVILEGES; mysql> quit
Also, be sure to check that your firewall has been configured to let MySQL out.