Monday, 7 July 2008

Tuning Nagios for running off CF Card

As a follow up to my previous post I've run my Nagios installation on Soekris net4801 implementing the advice I've given you in my last post (focusing on slow I/O when writing to CF Card), describing the platform and what can be done with it. The changes in system behavior are huge - in a positive way of course.

First of all the system is not so overloaded now and I guess I could double the amount of tests run on this platform without getting into trouble like before. At the moment this system is monitoring 36 machines with 86 services in total. Some time ago I had to stop adding and literally remove some less important tests, because most of the time I was getting false positives - usually warnings, with comment that the plugin has timed out. So how big is the difference?