Book Image

Puppet 4.10 Beginner's Guide - Second Edition

By : John Arundel
Book Image

Puppet 4.10 Beginner's Guide - Second Edition

By: John Arundel

Overview of this book

Puppet 4.10 Beginner’s Guide, Second Edition, gets you up and running with the very latest features of Puppet 4.10, 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 (20 chapters)
Puppet 4.10 Beginner's Guide Second Edition
About the Author
About the Reviewer
Customer Feedback

What is version control?

If you're already familiar with Git, you can save some reading by skipping ahead to the Creating a Git repo section. If not, here's a gentle introduction.

Even if you're the only person who works on a piece of source code (for example, Puppet manifests), it's still useful to be able to see what changes you made and when. For example, you might realize that you introduced a bug at some point in the past, and you need to examine exactly when a certain file was modified and exactly what the change was. A version control system lets you do that, by keeping a complete history of the changes you've made to a set of files over time.

Tracking changes

When you're working on code with others, you also need a way to communicate with the rest of the team about your changes. A version control tool such as Git not only tracks everyone's changes, but lets you record a commit message, explaining what you did and why. The following example illustrates some aspects of a good commit message...