check_mk is a wonderful “a new general purpose Nagios-plugin for retrieving data”. But this wonder plugins is a good replacement for NRPE, NSClients++ etc. I’ve tried using check_mk in place of NSClient++ to monitor my Windows Machines successfully

Installing Nagios is straightforward. You may want to see Blog Entry Using Nagios 2.x/3.x on CentOS. In a nutshell, do this in sequence to avoid dependency issues

# yum install nagios nagios-devel

# yum install nagios-plugins-all

Downloading and unpacking check_mk

# wget http://mathias-kettner.de/download/check_mk-1.1.8.tar.gz

# tar -zxvf check_mk-1.1.8.tar.gz

# cd check_mk-1.1.8

# ./setup.sh --yes

Restart the Service

# service nagios restart
# service apache restart

Making the agent accessible through xinetd

# cp -p /usr/share/check_mk/agents/check_mk_agent.linux /usr/bin/check_mk_agent
# cp -p /usr/share/check_mk/agents/xinetd.conf /etc/xinetd.d/check_mk

Restart xinetd service.

# service xinetd restart

For more information on check_mk on Debian Derivative, do look at the excellent writup “HOWTO: How to install Nagios with check_mk, PNP and NagVis“