Book Image

Learning Nagios - Third Edition

By : Wojciech Kocjan, Piotr Beltowski
Book Image

Learning Nagios - Third Edition

By: Wojciech Kocjan, Piotr Beltowski

Overview of this book

Nagios, a powerful and widely used IT monitoring and management software for problem -solving. It detects problems related to your organizations infrastructure and helps in resolving the issue before it impacts the business. Following the success of the previous edition, this book will continue to help you monitor the status of network devices and also notify the system administrators of network problems. Starting with the fundamentals, the book will teach you how to install and configure Nagios for your environment. The book helps you learn how to end downtimes, adding comments and generating reports using the built-in Web interface of Nagios. Moving on, you will be introduced to the third-party web interfaces and applications for checking the status and report specific information. As you progress further in Learning Nagios, you will focus on the standard set of Nagios plugins and also focus on teach you how to efficiently manage large configurations and using templates. Once you are up to speed with this, you will get to know the concept and working of notifications and events in Nagios. The book will then uncover the concept of passive check and shows how to use NRDP (Nagios Remote Data Processor). The focus then shifts to how Nagios checks can be run on remote machines and SNMP (Simple Network Management Protocol) can be used from Nagios. Lastly, the book will demonstrate how to extend Nagios by creating custom check commands, custom ways of notifying users and showing how passive checks and NRDP can be used to integrate your solutions with Nagios. By the end of the book, you will be a competent system administrator who could monitor mid-size businesses or even large scale enterprises.
Table of Contents (19 chapters)
Learning Nagios - Third Edition
About the Authors
About the Reviewer


Nagios offers multiple ways of monitoring the Microsoft Windows workstations and servers. These vary from monitoring computers remotely and querying SNMP, to installing dedicated agents. Another very interesting feature of Nagios is its ability to effortlessly configure multiple machines in order to perform monitoring and to have a single place where the results are easily available.

In this chapter, you learned the following items:

  • Installing an NSClient++ agent that can be used to monitor Microsoft Windows based machines using Nagios

  • Running checks using both the check_nt plugin and the NRPE protocol

  • Querying information from WMI using the NRPE protocol

  • Writing custom checks for NSClient++

  • Setting up multiple Nagios instances and reporting all host and service status to other Nagios instances

  • Managing configuration for distributed monitoring using multiple templates and custom variables

The next chapter will talk about how to write your own Nagios plugins to monitor services that require...