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Cacti Beginner's Guide

You're reading from   Cacti Beginner's Guide Leverage Cacti to design a robust network operations center

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Product type Paperback
Published in Dec 2017
Publisher
ISBN-13 9781788299183
Length 420 pages
Edition 2nd Edition
Tools
Concepts
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Author (1):
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Thomas Urban Thomas Urban
Author Profile Icon Thomas Urban
Thomas Urban
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Toc

Table of Contents (18) Chapters Close

Preface 1. Installing Cacti FREE CHAPTER 2. Using Graphs to Monitor Networks and Devices 3. Creating and Using Templates 4. User Management 5. Data Management 6. Cacti Maintenance 7. Network and Server Monitoring 8. Plugin Architecture 9. Plugins 10. Threshold Monitoring with Thold 11. Enterprise Reporting 12. Cacti Automation for NOC 13. Migrating Cacti to a New Server 14. Multiple Poller with Cacti 15. Online Resources 16. Further Information 17. Pop Quiz Answers

The Round Robin database tool

Cacti uses RRDtool to store and graph its performance data. RRD files store data in a fixed size file using a First In, First Out (FIFO) methodology and in order to aggregate data, different Round Robin Archives (RRA) are defined within a single RRD file. These RRAs usually consist of daily, weekly, monthly and yearly archives but can be freely defined.

The RRD file architecture

The principal of an RRD file is shown in the next figure. We have defined three Round Robin Archives, one storing 5 minute polling data, one RRA storing 20 minutesΒ  (4 * 5 minute polling data) aggregated data and another one storing the hourly (12 * 5 minute polling data) aggregated data.

In this example, the data...

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