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Puppet 4.10 Beginner's Guide

Puppet 4.10 Beginner's Guide - Second Edition

By : John Arundel
4.5 (4)
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Puppet 4.10 Beginner's Guide

Puppet 4.10 Beginner's Guide

4.5 (4)
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 (14 chapters)
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13
Index

Persistent storage for containers


Containers are designed to be transient; they run for a while and then disappear. Anything inside the container disappears with it, including files and data created during the container's run. This isn't always what we want, of course. If you're running a database inside a container, for example, you usually want that data to persist when the container goes away.

There are two ways of persisting data in a container: the first is to mount a directory from the host machine inside the container, known as a host-mounted volume, and the second is to use what's called a Docker volume. We'll look at both of these in the following sections.

Host-mounted volumes

If you want a container to be able to access files on the host machine's filesystem (such as application code that you're working on and that you want to test, for example), the easiest way to do that is to mount a directory from the host on the container. The following example shows how to do this (docker_mount...

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