Nagios Information

The web interface allows you to check the Nagios daemon status along with general information on the enabled and disabled features. It also allows you to check performance information related to Nagios. This can be used to make sure that Nagios is not overloaded with checks to perform, and see how much time checks take, and how often they're performed.

Process Information

The Nagios Process Information page shows generic information on Nagios processes. It also allows you to perform several actions via the Process Commands panel. This page can be accessed via the Process Info link on the left-side menu.

The following is a screenshot of this page:

This page contains information on the Nagios version, its process ID, status, and log rotation. It also shows whether the checks, notifications, and other functions are enabled.

The menu on the right also allows you to stop and restart the Nagios daemon. It also allows you to enable or disable the performance of checks and sending notifications. Flap detection and performance data processing can also be turned on or off from this page.

Performance Information

The Prog ram-Wide Performance Information page shows information about the performance and load of Nagios process. This page can be accessed via the Process Info link on the left-side menu.

The following is a screenshot of this page:

This page contains information on a number of host and service checks performed within various periods of time, as well as the number of reports received from external applications. It also shows the number of commands received from external applications, which is usually the web interface.

This page also contains information on average check execution times, as well as latencies. This information is useful in determining whether the Nagios process is overloaded or not. If the average latency is above 60 seconds, or is constantly increasing, then this means Nagios is not able to perform all of the specified checks. In such cases, it is a good idea to increase the check or notification intervals, so that the number of commands Nagios runs in any given period of time is lower.