Book Image

Nagios Core Administration Cookbook - Second Edition

By : Tom Ryder
Book Image

Nagios Core Administration Cookbook - Second Edition

By: Tom Ryder

Overview of this book

Nagios Core is an open source monitoring framework suitable for any network that ensures both internal and customer-facing services are running correctly and manages notification and reporting behavior to diagnose and fix outages promptly. It allows very fine configuration of exactly when, where, what, and how to check network services to meet both the uptime goals of your network and systems team and the needs of your users. This book shows system and network administrators how to use Nagios Core to its fullest as a monitoring framework for checks on any kind of network services, from the smallest home network to much larger production multi-site services. You will discover that Nagios Core is capable of doing much more than pinging a host or to see whether websites respond. The recipes in this book will demonstrate how to leverage Nagios Core's advanced configuration, scripting hooks, reports, data retrieval, and extensibility to integrate it with your existing systems, and to make it the rock-solid center of your network monitoring world.
Table of Contents (18 chapters)
Nagios Core Administration Cookbook Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Monitoring the output of an SNMP query


In this recipe, we'll learn how to use the check_snmp plugin to monitor the output made by SNMP (Simple Network Management Protocol) requests.

Despite its name, SNMP is not really a very simple protocol. However, it's a very common method for accessing information on many kinds of networked devices, including monitoring boards, usage meters, and storage appliances as well as workstations, servers, and routing equipment.

Because SNMP is so widely supported and typically able to produce such a large volume of information to trusted hosts, it's an excellent way of gathering information from hosts that's not otherwise retrievable from network services. For example, while checking for a PING response from a large router is simple enough, there may not be an easy way to check properties like the state of each of its interfaces, or the presence of a certain route in its routing tables.

Using check_snmp in Nagios Core allows automated retrieval of this information...