Nagios plugin that measures Linux memory use as reported by the '/proc/meminfo' output.
A PNP4Nagios graph template is include to combine the figures on a single chart.
This is plugin is based on one published on the Nagios Exchange by Lukasz Gogolin lukasz.gogolin@gmail.com This repo is a copy of version 1.1 released 2012-07-22 and modified by @whereisaaron. This version 1.4 has contributions by @whereisaaron, @DavidGoodwin, @eacmen.
The changes aim to improve performance (fewer forks) and the PNP4Nagios chart.
Sample install steps below are for CentOS 6.5 and assume you are using nagio with check_nrpe plugin, nrpe, and pnp4nagios.
-
Install and configure nagios, nrpe, and the check_nrpe nagios plugin
-
Install the files for this plugin and chart
cp check_mem.php /usr/share/nagios/html/pnp4nagios/templates/
cp check_mem /usr/lib64/nagios/plugins/
/sbin/restorecon -v /usr/lib64/nagios/plugins/check_mem
- Now add the command to NRPE configuration /etc/nagios/nrpe.config
command[check_mem]=/usr/lib64/nagios/plugins/check_mem -w 70 -c 90
- Reload NRPE
service nrpe reload
- Test manually
/usr/lib64/nagios/plugins/check_nrpe -H target.host.name -c check_mem
- Now go configure the service or service template in Nagios and use as required
define service {
name check-nrpe-linux-mem
service_description Check Linux memory
use generic-service
check_command check_nrpe!check_mem
max_check_attempts 1
check_interval 5
retry_interval 1
register 0
}
The pnp4nagios template name assumes you have
pnp4nagios configured with CUSTOM_TEMPLATE = 1,
if not you may need to change this filename so that it matches. If you find that you get multiple
charts instead of one, the template name is probably not matching.