[ Thanks to Amy
Kucharik for these links. ]
From Part One:
“How can a system administrator monitor a large number of
machines and services to proactively address problems before anyone
else suffers from them?“The answer is Nagios.
“Nagios is an open source network monitoring tool. It is free,
powerful and flexible. It can be tricky to learn and implement, but
can reduce enormously the amount of time required to keep track of
how your organization’s IT infrastructure is performing…”
Complete Story (Part One)
Complete Story (Part Two)