Monitoring / trending tools

[Ewoud Kohl van Wijngaarden]

Hello all,

We all know the importance of monitoring and trending, but there's a lot
of tools so I'd like to start the thread to look into those.

= Munin =
Mostly meant for trending, though you can use the limits part to notify
on limits.

== Pros ==
* Easy to deploy
* Good puppet module available at https://github.com/duritong/puppet-munin

== Cons ==
* ???

= Nagios =
= Icinga =
= Zabbix =
= Ganglia =