I’ve just read “Building a Monitoring Infrastructure with Nagios” by David Josephsen. Interesting book, especially in the earlier chapters where he
talks about philosophy of/strategy for monitoring.
Some of the text is spoilt (for me) by typos and layout errors. In many of the script examples the wrong quotes are shown (forward rather than back quotes) and whilst scripts are shown in a fixed font they’ve managed to convert all “fi” sequences to the ligature (which if find very distracting as it creates gaps in the middle of words (like notification which crops up quite a lot).
Putting those nitpicks aside it’s worth reading. I picked up references to a few things that I hadn’t come across before; WebInject for deeper testing of web applications; ticklines as a way of quickly visualising time series data

http://www.amazon.co.uk/B…n/dp/0132236931