Introduction
The Nagios Core web interface is an administrator's first port of call to see the current status of the network being monitored. By way of CGI and PHP scripts, it allows an overview of the general performance of all the hosts and services being monitored. It also provides information about their current states and how checks are performed. This allows considerably more detail than that which is normally contained in e-mailed notifications.
In most respects, the Nagios Core web interface (without any addons) is designed for the display of information rather than controlling or configuring the server, but there are some things that can be done from it to actually change the way Nagios Core is running. These include the following:
Disabling or enabling active and passive checks, event handlers, notifications, and flap detection, whether for all hosts and services or specific ones
Sending custom notifications about a host or service that don't necessarily correspond to an actual state...
