Book Image

Cacti Beginner's Guide - Second Edition

Book Image

Cacti Beginner's Guide - Second Edition

Overview of this book

Cacti is a performance measurement tool that provides easy methods and functions for gathering and graphing system data. You can use Cacti to develop a robust event management system that can alert on just about anything you would like it to. But to do that, you need to gain a solid understanding of the basics of Cacti, its plugin architecture, and automation concepts. Cacti Beginner's Guide will introduce you to the wide variety of features of Cacti and will guide you on how to use them for maximum effectiveness. Advanced topics such as the plugin architecture and Cacti automation using the command-line interface will help you build a professional performance measurement system. Designed as a beginner's guide, the book starts off with the basics of installing and using Cacti, and also covers the advanced topics that will show you how to customize and extend the core Cacti functionalities. The book offers essential tutorials for creating advanced graphs and using plugins to create enterprise-class reports to show your customers and colleagues. From data templates to input methods and plugin installation to creating your own customized plugins, this book provides you with a rich selection of step-by-step instructions to reach your goals. It covers all you need to know to implement professional performance measurement techniques with Cacti and ways to fully customize Cacti to fit your needs. You will also learn how to migrate Cacti to new servers. Lastly you will also be introduced to the latest feature of building a scalable remote poller environment. By the end of the book, you will be able to implement and extend Cacti to monitor, display, and report the performance of your network exactly the way you want.
Table of Contents (24 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
15
Online Resources

Creating a remote SSH data input method


Besides SNMP queries, remote data retrieval is an important part for creating Cacti performance graphs. You may get into a situation where SNMP data retrieval is not possible and you only have SSH access to a device. Let's assume that you want to graph the I/O performance of some server drives using the iostat utility. You will now learn the different steps it takes to create such a remote SSH data input method.

Note

Please note that the book comes with an exported version of the data input method, the data template as well as the graph template. The file cacti_graph_template_unix_-_remote_iostats_command_graph.xml can be imported into Cacti and is provided as a reference for you. You should still try to follow the steps provided here in order to see the different tasks involved to setup your own SSH-based data and graph.

Preparation

As a preparation for the data input method, you will need to create two different scripts and set up public key authentication...