Book Image

Puppet 5 Beginner's Guide - Third Edition

By : John Arundel
Book Image

Puppet 5 Beginner's Guide - Third Edition

By: John Arundel

Overview of this book

Puppet 5 Beginner’s Guide, Third Edition gets you up and running with the very latest features of Puppet 5, including Docker containers, Hiera data, and Amazon AWS cloud orchestration. Go from beginner to confident Puppet user with a series of clear, practical examples to help you manage every aspect of your server setup. Whether you’re a developer, a system administrator, or you are simply curious about Puppet, you’ll learn Puppet skills that you can put into practice right away. With practical steps giving you the key concepts you need, this book teaches you how to install packages and config files, create users, set up scheduled jobs, provision cloud instances, build containers, and so much more. Every example in this book deals with something real and practical that you’re likely to need in your work, and you’ll see the complete Puppet code that makes it happen, along with step-by-step instructions for what to type and what output you’ll see. All the examples are available in a GitHub repo for you to download and adapt for your own server setup.
Table of Contents (21 chapters)
Puppet 5 Beginner's Guide Third Edition
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
Index

Summary


In this chapter we've looked at one of the most powerful tools in Puppet's toolbox, the template file. We've examined the EPP tag syntax and seen the different kinds of tags available, including printing and non-printing tags.

We've learned that not only can you simply insert values from variables into templates, but that you can also include or exclude whole blocks of text, depending on the value of Puppet expressions, or generate templates of arbitrary size by iterating over arrays and hashes.

We've looked at some real-life examples of dynamically generating config files from Facter and Hiera data, and seen seen how to declare typed parameters in the template file, and pass in values for those parameters when calling the epp() function in your Puppet manifest.

We've seen how to check the syntax of templates using puppet epp validate, and how to render the output of a template using puppet epp render, passing in canned values for the template parameters using --values and --values_file...