HOW TO INSTALL NAGIOS ON UBUNTU 12.04
Monitoring plays an important role in running our systems smoothly. It is always better to diagnose the problems and take some measures as early as possible, rather than waiting for things to go worse. Nagios is a powerful monitoring system that enables organizations to identify and resolve IT infrastructure problems before they affect critical business processes. For a detailed information on Nagios you can visit the official documentation page here . I'll just cover the steps to install and get Nagios working on your Ubuntu box. First of all install Nagios on your Ubuntu box using the following command : $ sudo apt-get install -y nagios3 It will go through, and ask you about what mail server you want to use. You'll see something like this on your screen. Pick one as per your requirements. It will then ask you about the domain name you want to have email sent from. Again, fill that out based upon your needs. It will ask you what password you want to use - put