▶Book Description
Puppet is a configuration management system that automates all your IT configurations, giving you control of managing each node. Puppet 5 Cookbook will take you through Puppet's latest and most advanced features, including Docker containers, Hiera, and AWS Cloud Orchestration. Updated with the latest advancements and best practices, this book delves into various aspects of writing good Puppet code, which includes using Puppet community style, checking your manifests with puppet-lint, and learning community best practices with an emphasis on real-world implementation.
You will learn to set up, install, and create your first manifests with version control, and also learn about various sysadmin tasks, including managing configuration files, using Augeas, and generating files from snippets and templates. As the book progresses, you'll explore virtual resources and use Puppet's resource scheduling and auditing features. In the concluding chapters, you'll walk through managing applications and writing your own resource types, providers, and external node classifiers.
By the end of this book, you will have learned to report, log, and debug your system.
▶What You Will Learn
⦁ Discover the latest and most advanced features of Puppet
⦁ Master techniques to deal with centralized and decentralized Puppet deployments
⦁ Use exported resources and forge modules to configure and deploy applications
⦁ Create efficient manifests to streamline your deployments
⦁ Automate deployment of puppet environment using git-hooks
⦁ Deploy AWS instances and Docker containers with Puppet
⦁ Make Puppet reliable, performant, and scalable
▶Key Features
⦁ Grasp recipes that work with centralized and decentralized deployments
⦁ Explore language differences and enhancements anticipated in Puppet version 5.x
⦁ Gain expert understanding of Puppet's latest and most advanced features
▶Who This Book Is For
Puppet 5 Cookbook is for anyone who builds and administers servers, especially in a web operations context. You’ll need some experience of Linux systems administration, including familiarity with the command line, filesystem, and text editing. No prior programming experience is required.
▶What this book covers
⦁ Chapter 1, Puppet Language and Style, introduces the Puppet language and shows how to write manifests. The Puppet linting tool, puppet-lint, is introduced, and we review best practices to write Puppet code. Metaparameters are shown with examples. We also cover changes in the Puppet language available in versions 4 and 5 of Puppet.
⦁ Chapter 2, Puppet Infrastructure, explains how to deploy Puppet in your environment. It covers the two main methods of installation, centralized and decentralized (masterless). It shows you how to use Git to centrally manage your code. It will help you configure PuppetDB and Hiera.
⦁ Chapter 3, Writing Better Manifests, deals with organizing your Puppet manifests. Manifests are used to build modules. This chapter introduces the concept of roles and profiles to abstract how modules are applied to machines. Parameterized classes are introduced. It also shows you how to efficiently define resources with arrays of resources and resource defaults.
⦁ Chapter 4, Working with Files and Packages, shows you how to manage files using snippets (fragments). It introduces the power of creating files with both Ruby (ERB) and Puppet (EPP) templates. It also helps you explore ways to secure information stored in your Puppet manifests.
⦁ Chapter 5, Users and Virtual Resources, deals with the advanced topic of virtual and exported resources. Virtual resources are a way of defining resources but not applying them by default. Exported resources are similar but are used to have resources from one machine applied to one or more other machines.
⦁ Chapter 6, Managing Resources and Files, speaks about dealing with directories and purging resources not controlled by Puppet. It shows you how to have file resources applied differently on different machines. Furthermore, methods for managing host entries in /etc/hosts are shown with exported resources examples.
⦁ Chapter 7, Managing Applications, shows you how to use Puppet to manage your deployed applications. Using public Forge modules, it helps you configure Apache, NGINX, and MariaDB.
⦁ Chapter 8, Servers and Cloud Infrastructure, introduces virtual resources and shows how to use them to configure highly available services. It also shows you how to use Puppet to manage Docker and AWS instances. Furthermore, Vagrant is used as a tool to create test environments for your Puppet code.
⦁ Chapter 9, External Tools and the Puppet Ecosystem, shows you how to extend Puppet with your own types and providers, how to make your own facts, as well as the Puppet Development Kit (PDK).
⦁ Chapter 10, Monitoring, Reporting, and Troubleshooting, shows you how to leverage Puppet to monitor your infrastructure for problems. We configure Puppet reporting and then discuss some of the common problems with Puppet code.
