Munin has worked great for me. I've written a few node scripts for monitoring Passenger (aka mod_rails) and Beanstalkd and it was super easy. Ex: http://gist.g

Munin has worked great for me. I've written a few node scripts for monitoring Passenger (aka mod_rails) and Beanstalkd and it was super easy. Ex: http://gist.github.com/37525 http://gist.github.com/37525