Monitoring the Nagios process with monit

Monitoring the Nagios process with monit

Howto to install monit on Debian or Ubuntu to monitor the nagios process.

Installation

aptitude install monit

Configuration

Edit the monit configuration file /etc/monit/monitrc and make the following changes:

Generall settings:

set daemon  120
set logfile syslog facility log_daemon
set mailserver localhost
set mail-format { from: monit@myserver.de }
set alert admin@myserver.de

Check the nagios process:

check process nagios3 with pidfile /var/run/nagios3/nagios3.pid
        start program = "/etc/init.d/nagios3 start"
        stop  program = "/etc/init.d/nagios3 stop"
        if 3 restarts within 3 cycles then timeout

If nagios is not running, monit tries to start it 3 times. And send you an e-mail.

Note: If you use Centreon the pid file is /var/lib/nagios3/nagios.lock . You have to replace it in the monit configuration file or change the “Lock File” value in your centreon configuration.

Change the following value in /etc/default/monit to:

startup=1

Start monit

/etc/init.d/monit start

Links

* M/Monit

* Monitor Debian servers with monit

* Nagios

* Centreon