Book Image

Mastering Puppet - Second Edition

By : Thomas Uphill
Book Image

Mastering Puppet - Second Edition

By: Thomas Uphill

Overview of this book

Puppet is a configuration management system and a language. It was written for and by system administrators to manage large numbers of systems efficiently and prevent configuration drifts. Mastering Puppet deals with the issues faced when scaling out Puppet to handle large numbers of nodes. It will show you how to fit Puppet into your enterprise and allow many developers to work on your Puppet code simultaneously. In addition, you will learn to write custom facts and roll your own modules to solve problems. Next, popular options for performing reporting and orchestration tasks will be introduced in this book. Moving over to troubleshooting techniques, which will be very useful. The concepts presented are useful to any size organization. By the end of the book, you will know how to deal with problems of scale and exceptions in your code, automate workflows, and support multiple developers working simultaneously.
Table of Contents (17 chapters)

Summary


In this chapter, we used Ruby to extend Facter and define custom facts. Custom facts can be used in Hiera hierarchies to reduce complexity and organize our nodes. We then began writing our own custom modules and ran into a few problems with multiple defined resources. Two solutions were presented: virtual resources and refactoring the code.

In the next chapter, we will be making our custom modules more useful with custom types.