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)

Completing the stack with PuppetDB

PuppetDB is a specialized database REST API designed to interact with the Puppet master. It mainly comprises a PostgreSQL backend with an API wrapper. The latter was written in Clojure and runs in yet another JVM.

PuppetDB aids the master's secondary task of storing reports and other agent data. It is also necessary for some specific manifest compiler functionality. This is covered in Chapter 6, The Puppet Beginners Advanced Parts.

The best way to set up and configure PuppetDB is actually Puppet itself. Since the necessary tools have not yet been introduced, we will postpone this step until Chapter 6, The Puppet Beginners Advanced Parts. This is not a problem, because PuppetDB is not essential for basic master operation.

Nevertheless, after finishing this chapter, you should include PuppetDB into any new master setup because it allows for...