Book Image

Puppet 5 Essentials - Third Edition

By : Martin Alfke, Felix Frank
Book Image

Puppet 5 Essentials - Third Edition

By: Martin Alfke, Felix Frank

Overview of this book

Puppet is a configuration management tool that allows you to automate all your IT configurations, giving you control over what you do to each Puppet Agent in a network, and when and how you do it. In this age of digital delivery and ubiquitous Internet presence, it's becoming increasingly important to implement scaleable and portable solutions, not only in terms of software, but also the system that runs it. This book gets you started quickly with Puppet and its tools in the right way. It highlights improvements in Puppet and provides solutions for upgrading. It starts with a quick introduction to Puppet in order to quickly get your IT automation platform in place. Then you learn about the Puppet Agent and its installation and configuration along with Puppet Server and its scaling options. The book adopts an innovative structure and approach, and Puppet is explained with flexible use cases that empower you to manage complex infrastructures easily. Finally, the book will take readers through Puppet and its companion tools such as Facter, Hiera, and R10k and how to make use of tool chains.
Table of Contents (10 chapters)

Upgrading to Puppet 4

Let's first look at how users of the older Puppet 3 series can approach the update.

Instead of upgrading your Puppet master machine, consider setting up a new server in parallel and migrating the service carefully. This has some advantages. For example, rolling back in case of problems is quite easy.

The new Puppet 4 and later versions can be installed in several ways:

  • Using the Puppet Labs repositories, which will remove older Puppet packages
  • This method means a hard cut without testing in advance, which is not recommended. The update to Puppet 4 and later versions should only take place after in-depth testing of your Puppet manifest code
  • Installing as the Ruby gem extension or from tarball
  • This approach requires a separate Ruby installation, which is not available on most modern Linux distributions. For Puppet 4, Ruby 2.1 is required. For Puppet 5...