Server Monitoring With munin And monit On Debian Lenny

In this article I will describe how you can monitor your Debian
Lenny server with munin and monit. munin produces nifty little graphics
about nearly every aspect of your server (load average, memory usage,
CPU usage, MySQL throughput, eth0 traffic, etc.) without much
configuration, whereas monit checks the availability of services like
Apache, MySQL, Postfix and takes the appropriate action such as a
restart if it finds a service is not behaving as expected. The
combination of the two gives you full monitoring: graphics that lets
you recognize current or upcoming problems (like “We need a bigger
server soon, our load average is increasing rapidly.”), and a watchdog
that ensures the availability of the monitored services.