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Nagios Core Version 3.x Documentation
http://www.nagios.org Copyright © 2009 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: 06-16-2009 [ Table of Contents ] Nagios, Nagios Core, NRPE, NSCA, and the Nagios logo are trademarks, servicemarks,registered servicemarks or registered trademarks of Nagios Enterprises. All other trademarks, servicemarks, registered trademarks, and registered servicemarks mentioned herein may be the property of their respective owner(s). The information contained herein is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE WARRANTY OF DESIGN, MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.

1Nagios Core 3.x Documentation

Table of Contents
About What is Nagios? System requirements Licensing Downloading the latest version Release Notes What’s new in this version Known issues Support Nagios Support Portal Nagios Community Wiki Getting Started Advice for beginners Quickstart installation guide Upgrading from previous versions How to monitor a Windows machine How to monitor a Linux/Unixmachine 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 overview Main configuration file options Object configuration overview Object definitions CGI configuration file options Configuring authorization for the CGIs Running Nagios Verifying yourconfiguration 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 Time periods Determining status and reachability of network hosts Notifications

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Information on the CGIs Advanced Topics External commands Event handlers Volatile services Service and host result freshnesschecks Distributed monitoring Redundant and failover monitoring Detection and handling of state flapping Notification escalations On-call notification rotations Monitoring service and host 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 checksPassive host state translation Check scheduling Custom CGI headers and footers Object inheritance Time-saving tips for object definitions Security and Performance Tuning Security 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 WithOther Software Integration Overview SNMP Traps TCP Wrappers Nagios Addons NRPE NSCA NDOUtils Other addons Nagios Exchange Development Plugin API Developing Plugins For Use With Embedded Perl

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About Nagios
Up To: Contents See Also: Quickstart Installation Guides Nagios Overview More information about Nagios - including features, case studies, and technical specifications can be found onlineat www.nagios.org/about/. What Is Nagios? Nagios® is a system and network monitoring application. It watches hosts and services that you specify, alerting you when things go bad and when they get better. Nagios was originally designed to run under Linux, although it should work under most other unices as well. Some of the many features of Nagios include: Monitoring of network services (SMTP,POP3, HTTP, NNTP, PING, etc.) Monitoring of host resources (processor load, disk usage, etc.) Simple plugin design that allows users to easily develop their own service checks Parallelized service checks Ability to define network host hierarchy using "parent" hosts, allowing detection of and distinction between hosts that are down and those that are unreachable Contact notifications when service or...