Nagios

Nagios Core Version 3.x Documentation
http://www.nagios.org
Copyright © 2009-2010 Nagios Core Development Team and Community Contributors.
Copyright © 1999-2009 Ethan Galstad.
Portions copyright by Nagios Community members. See the THANKS file for more information.
Last Updated: 08-28-2010
[ Table of Contents ]
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Nagios Core 3.x Documentation

Table of Contents
About
What is Nagios Core?
System requirements
Licensing
Downloading the latest version
Release Notes
What’s new in this version
Known issues
Support
Nagios Library - Nagios tips, tutorials, documentation, and manuals
Support Forum - Community and customer Nagios support forum
More Options - Community and commercialsupport options
Getting Started
Advice for beginners
Quickstart installation guide
Upgrading from previous versions
How to monitor a Windows machine
How to monitor a Linux/Unix machine
How to monitor a Netware server
How to monitor a network printer
How to monitor a router/switch
How to monitor a publicly available service (HTTP, FTP, SSH, etc.)
Configuring Nagios
Configuration overviewMain configuration file options
Object configuration overview
Object definitions
CGI configuration file options
Configuring authorization for the CGIs
Running Nagios
Verifying your configuration
Starting and stopping Nagios
The Basics
Plugins
Macros and how they work
Standard macros available in Nagios
Host checks
Service checks
Active checks
Passive checks
State types

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Timeperiods
Determining status and reachability of network hosts
Notifications
Information on the CGIs
Advanced Topics
External commands
Event handlers
Volatile services
Service and host result freshness checks
Distributed monitoring
Redundant and failover monitoring
Detection and handling of state flapping
Notification escalations
On-call notification rotations
Monitoring service andhost clusters
Host and service dependencies
State stalking
Performance data
Scheduled host and service downtime
Using the embedded Perl interpreter
Adaptive monitoring
Predictive dependency checks
Cached checks
Passive host state translation
Check scheduling
Custom CGI headers and footers
Object inheritance
Time-saving tips for object definitions
Security and Performance TuningSecurity considerations
Enhanced CGI security and authentication
Tuning Nagios for maximum performance
Fast startup options
Large installation tweaks
Using the nagiostats utility
Graphing Nagios performance statistics
Integration With Other Software
Integration Overview
SNMP Traps
TCP Wrappers
Nagios Addons
NRPE
NSCA
NDOUtils
Other addons
Nagios Exchange
Development
Plugin APIDeveloping Plugins For Use With Embedded Perl

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About Nagios Core
Up To: Contents
See Also: Quickstart Installation Guides
Nagios Core Overview
More information about Nagios Core - including features and technical specifications can be found
online at www.nagios.org/about/.
What Is Nagios Core?
Nagios® Core™ is an Open Source system and network monitoring application. It watches hosts andservices that you specify, alerting you when things go bad and when they get better.
Nagios Core was originally designed to run under Linux, although it should work under most other
unices as well.
Some of the many features of Nagios Core include:
Monitoring of network services (SMTP, POP3, HTTP, NNTP, PING, etc.)
Monitoring of host resources (processor load, disk usage, etc.)
Simple...