Your Nagios system is now up and running. It will also send out notifications to people if something goes wrong. What we need now, is a way to be able to view current and historical information on which hosts and services are failing. Nagios offers just that! It comes with a web interface that can be used to view the status of all hosts and services, read logs, and generate reports. And that is just a small part of its functionality.

Using any browser, you can access almost any information Nagios keeps — statuses, performance data, history, and logs. With just a few clicks, you can check if all of your hosts and services are working correctly. The interface also offers the ability to change parts of a configuration on the fly. This means that you can, for example, disable host or service checks in just a few clicks. Nagios web pages are usually password protected. In many cases, they are also only accessible from within a trusted IP address — for...