System Performance Alerting

zeeple · 08-07-2007, 12:59 PM

Hi folks,

What do people recommend for the following:

I want to be emailed or txt messaged when any of these things occur:

* RAM dips below 10 MB
* CPU hits 100%
* Disk space dips below 5%

Can anyone recommend a good performance monitoring/alerting package that can handle this?

Thanks!

MensaWater · 08-07-2007, 02:19 PM

Nagios

www.nagios.org

Also get the NRPE plugin. nagios runs on the main naigos server and nrpe is used on each UNIX/Linux host you want to monitor. If you have Windows hosts you can get nsclient to work with those and Nagios.

zeeple · 08-08-2007, 10:59 AM

That's a pretty good idea but I was hoping there was a smaller simpler package. I ended up just doing some simple perl scripts:

#! /usr/bin/perl

if (`cat /proc/meminfo | grep MemFree` =~ /(\d+)/) { $mbfree = $1/1024; };
if ($mbfree < 25) {
`echo $mbfree | mail george\@banana.tld -s 'RAM low on SVN'`;
}
if ($mbfree < 5) {
`echo $mbfree | mail 123456789\@cell_phone.tld -s 'RAM low on SVN'`
;
}

And then scheduled it in crontab like this:

*/5 * * * * root memory_check.pl