Book Image

Puppet 4.10 Beginner's Guide - Second Edition

By : John Arundel
Book Image

Puppet 4.10 Beginner's Guide - Second Edition

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 (20 chapters)
Puppet 4.10 Beginner's Guide Second Edition
About the Author
About the Reviewer
Customer Feedback

Managing Docker images

Of course, it's very useful to be able to download and run public images from Docker Hub or other registries, but to unlock the real power of Docker we need to be able to build and manage our own images too.

Building images from Dockerfiles

As we saw in the previous examples, if you don't already have the specified container image on your system, Puppet's docker::image resource will pull it from Docker Hub for you and save it locally.

The docker::image resource is most useful, however, for actually building Docker images. This is usually done using a Dockerfile, so here is an example Dockerfile we can use to build an image (Dockerfile.hello):

FROM library/alpine:3.1
CMD /bin/sh -c "while true; do echo Hello, world; sleep 1; done"

LABEL org.label-schema.vendor="Bitfield Consulting" \
  org.label-schema.url="" \"Hello World" \
  org.label-schema.version="1.0.0" \