SALAM - Simple Agent-Less Availability Monitor
This is my personal project I started a few months ago which is a simple easy to use alternative to Nagios.
Go here for more information:
Go here to download the ISO and Release Notes(based on Turnkey Linux LAMP 2009.10):
If you would rather apply the patch yourself, the TKLPatch is attached below for use on TKL LAMP 2009.10, before applying the patch you must STOP the MySQL Server(if it is currently running): "/etc/init.d/mysql stop"