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Mastering Puppet 5

Mastering Puppet 5

By : Russell-Yates, Southgate
4.4 (5)
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Mastering Puppet 5

Mastering Puppet 5

4.4 (5)
By: Russell-Yates, Southgate

Overview of this book

Puppet is a configuration management system and a language written for and by system administrators to manage a large number of systems efficiently and prevent configuration drift. The core topics this book addresses are Puppet's latest features and mastering Puppet Enterprise. You will begin by writing a new Puppet module, gaining an understanding of the guidelines and style of the Puppet community. Following on from this, you will take advantage of the roles and profiles pattern, and you will learn how to structure your code. Next, you will learn how to extend Puppet and write custom facts, functions, types, and providers in Ruby, and also use the new features of Hiera 5. You will also learn how to configure the new Code Manager component, and how to ensure code is automatically deployed to (multiple) Puppet servers. Next, you will learn how to integrate Puppet with Jenkins and Git to build an effective workflow for multiple teams, and use the new Puppet Tasks feature and the latest Puppet Orchestrator language extensions. Finally, you will learn how to scale and troubleshoot Puppet. By the end of the book, you will be able to deal with problems of scale and exceptions in your code, automate workflows, and support multiple developers working simultaneously.
Table of Contents (14 chapters)
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Hiera 5

Hiera 5 is now a fully fledged member of the Puppet ecosystem. We've all been using Hiera for several years already, to provide a so-called separation of concerns between Puppet code and configuration data. Essentially, Hiera lets us separate the how (Puppet modules and manifests) from the what (configuration data). This allows us to keep all site-specific and business-specific data out of our manifests, making our Puppet modules vastly more portable. I can recall some time ago in the Puppet community, when Kelsey Hightower first gave us a presentation about separating manifests from data. Well, Hiera 5 finally comes of age in this version, and now allows us complete mastery over this aspect of our infrastructure design.

Hiera provides a key/value lookup facility for configuration data, allowing external lookups of values, and then exposing...

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