System information

Monitoring with Nagios 51

Monitoring with Nagios

Nagios is a stable, scalable and extensible enterprise-class network and system moni-

toring tool which allows administrators to monitor network and host resources such as

HTTP, SMTP, POP3, disk usage and processor load. Originally Nagios was designed

to run under Linux, but it can also be used on several UNIX operating systems. This

chapter covers the installation and parts of the configuration of Nagios (http://

www.nagios.org/).

3.1 Features of Nagios

The most important features of Nagios are:

• Monitoring of network services (SMTP, POP3, HTTP, NNTP, etc.).

• Monitoring of host resources (processor load, disk usage, etc.).

• Simple plug-in design that allows administrators to develop further service checks.

• Support for redundant Nagios servers.

3.2 Installing Nagios

Install Nagios either with zypper or using YaST.