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

Overview of the remote poller architecture


The new remote poller architecture of Cacti 1.x is essentially running a full Cacti in a remote location with a set of devices assigned and synced to it. The remote poller Cacti will go and poll devices, even in the case of an unreachable master server, and will report back the data to the master server to be added to the RRD files. The RRD files themselves only reside on the master Cacti system. As of November 2017, only a few plugins do support the remote poller concept. One of these is the Thold plugin.

The master server

The master server contains all configuration data and adds the polled data to the RRD files. It is providing the user interface to the graphs to end-users. As long as the network connection between the remote poller and the master system is available and the remote poller is online, data from the remote poller will be written directly to the master server database. The master server can also be used to poll devices.

Any configuration...