Nagios Installation in Ubuntu

Download the latest version 3.1.2.

Add new users nagios and nagiosadmin

> sudo adduser nagios
> sudo adduser nagiosadmin

Configure and install Nagios

> tar xvfz nagios-3.1.2.tar.gz
> cd nagios-3.1.2
> ./configure --with-nagios-user=nagios --with-nagios-group=nagios
> make all
> make fullinstall
> htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
> /etc/init.d/apache2 reload

Get the server to start the nagios when reboot

> sudo ln -s /etc/init.d/nagios /etc/rcS.d/S99nagios

Install the plugin.
Download the Plugin 1.4.13

> ./configure
> make
> sudo make install
> sudo chown nagios:nagios /usr/local/nagios -R

• Start FireFox
• http://localhost/nagios
• Enter nagiosadmin and the password