Icinga is a fork of Nagios and is backward compatible. So, Nagios configurations, plugins and addons can all be used with Icinga. Though Icinga retains all the existing features of its predecessor, it builds on them to add many long awaited patches and features requested by the user community.
Before proceeding with this make sure you have Ubuntu 12.10 LAMP server setup.
Install Icinga (Nagios Fork) in Ubuntu 12.10 server
Preparing your system
First you need to install the following package to get add-apt-repository command
sudo apt-get install python-software-properties software-properties-common
Now you need to add icinga PPA
Open the terminal and run the following comamnds
apt-get install icinga icinga-doc icinga-idoutils libdbd-mysql mysql-client
At the time of installation this will require some information please follow the on screen instructions
Once you installed icinga you can access the application using the following URL
Login username and password as follows
Username :- icingaadmin
Password:- you set this at the time of installation
Once the basic installation started working you need to check the documentation for more services setup.