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Sounds like you should just use Nagios or some other network monitoring system.

Nagios is very valuable when you're recovering from a disaster. Just keep doing things until it all turns green! It's just like refactoring.

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I'm a little skeptical of it; it seems very complex. In contrast, I'm leveraging the Ruby+RSpec infrastructure which I've already learned. And I interact with it via programming, instead of via configuration.

Also, by using just one language, Ruby, I can easily have full test coverage of the framework code itself. There are a lot of nagios plugins and scripts out there, but they don't seem to usually include tests of themselves.

But nagios is very intriguing - I'll check out what a "simple" install would be like.

For smaller apps is worth looking at Monit, really simple to setup and covers most of what needs testing if configured correctly.

Nagios is great, it's not just "is this host up?", but also SSL checking, module checks for CMS's.. :)

nagios is awful :-), active checks are ultimately a dead end. Heartbeat style stuff is where it's at. You should definately check out sensu and riemann, (or hevean forbid if you really like node.js everything Godot)

http://sensuapp.org/ http://riemann.io/ https://github.com/nodejitsu/godot

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