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

A short overview of the Cacti CLI functionality


As you've learned in previous chapters, Cacti comes with several CLI scripts suitable for some of Cacti's maintenance tasks. The CLI scripts can be found in the cli directory of base Cacti installation.

The cli directory contains two repair scripts which you may want to use in case of database corruption or template errors and you do not want to lose all the configuration data since your last backup.

Repairing templates

It may happen that some of the data or graph templates have errors. You can then try to repair these templates by using the repair_templates.php script. Issue the following command to check for errors. Using the -execute parameter will try to fix any errors shown:

cd /var/www/html/cacti/cliphp repair_templates.php

 

The following output will be shown on a working system:

Repairing the database

Cacti also provides a repair utility for checking and repairing the database structure. Using the repair_database.php script may save you from...