I’ll walk you through monitoring some basic services that you’ll probably use sooner or later. Read the documentation on developing plugins for more information. Plugins are easy to write, so don’t let this thought scare you off.
If you don’t happen to find an appropriate plugin for monitoring what you need, you can always write your own. The website hosts a number of additional plugins that have been written by users, so check it out when you have a chance. There are also a large number of contributed plugins that can be found in the contrib/ subdirectory of the plugin distribution. The Monitoring-Plugins or Nagios-Plugins packages comes with plugins that can be used to monitor a variety of services and protocols. When you find yourself needing to monitor a particular application, service, or protocol, chances are good that a plugin exists to monitor it. The sample configuration entries below reference objects that are defined in the sample commands.cfg and localhost.cfg config files. Note: These instructions assume that you've installed Naemon according to the quickstart guide. More information on monitoring local services on different types of hosts can be found in the documentation on: This situation requires that an intermediary monitoring agent be installed on any host that you need to monitor such information on. These local services or attributes of hosts are not usually exposed to external clients. Examples of local services associated with hosts are things like CPU load, memory usage, disk usage, current user count, process information, etc. Local services, in contrast, cannot be monitored with Naemon without an intermediary agent of some kind. These services and applications, as well as their underlying protocols, can usually be monitored by Naemon without any special access requirements. There are many more network services that you probably use on a daily basis. Examples of network services include HTTP, POP3, IMAP, FTP, and SSH. This document describes how you can monitor network services, applications and protocols, either on the local network or the greater Internet. See Also: Quickstart Installation Guide Introduction
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