So I thought I’d try to find oout why my desktop and NAS keep arguing. Nagios. That will help. So I fired-up a spare piece of tin, dropped Ubuntu 8.1 onto it and followed some instructions. The instructions are a bit out of date so I thought I’d record how I actually did it in case it helps somebody else.
Ubuntu
I assume you have installed it with LAMP to save a lot of farting around. If not, aptitude yourself to a point where you have then come back here.
Compilers and Libraries
sudo apt-get install build-essential
sudo apt-get install libgd2-xpm-dev
Nagios
cd ~
sudo wget http://downloads.sourceforge.net/nagios/nagios-3.1.0.tar.gz?use_mirror=voxel
sudo wget http://downloads.sourceforge.net/nagiosplug/nagios-plugins-1.4.13.tar.gz?use_mirror=voxel
Extract it (If you have a newer build of Nagios, change the path names below):
sudo tar -zxvf nagios-3.1.0.tar.gz
cd nagios-3.1.0
Create a user and Group:
sudo useradd -m nagios
sudo passwd nagios
sudo groupadd nagcmd
sudo usermod -a -G nagcmd nagios
sudo usermod -a -G nagcmd www-data
Now we can install….
sudo ./configure --with-command-group=nagcmd
sudo make all
sudo make install
sudo make install-init
sudo make install-config
sudo make install-commandmode
sudo make install-webconf
Create an Apache user we can login as called nagiosadmin:
sudo htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
Extract and compile the plugins that were downloaded earlier:
cd ~
tar -zxvf nagios-plugins-1.4.13.tar.gz
cd nagios-plugins-1.4.13
sudo ./configure --with-nagios-user=nagios --with-nagios-group=nagios
sudo make
sudo make install
Create a link to start the service:
sudo ln -s /etc/init.d/nagios /etc/rcS.d/S99nagios
Verify the config:
sudo /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
Restart Apache:
sudo /etc/init.d/apache2 restart
Start Nagios:
sudo /etc/init.d/nagios start
You should now be able to log into the Nagios web interface (http://localhost/nagios) using the nagiosadmin user and password.
Customise your installation…
sudo vim /usr/local/nagios/etc/nagios.cfg
I have to credit thedailyadmin.com for helping me out with a lot of the above. I urge you to go visit that site if only to stop me feeling guilty .
