I'm looking for tools to help me keep an eye on my server. I'm trying some tools and I really like Monit (http://mmonit.com/monit/). First because its simple and allow me to collect some data on one dashboard. Monit is also very flexible on the rules that we can do when a problem occurs before to alert you by e-mail or whatever.
I would like share experience with you about monitoring tools and specially your configuration if you are also using Monit ?