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Puppet 5 Beginner???s Guide
Puppet 5 Beginner???s Guide

Puppet 5 Beginner???s Guide: Go from newbie to pro with Puppet 5 , Third Edition

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Profile Icon John Arundel
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zł39.99 zł141.99
Full star icon Full star icon Full star icon Full star icon Half star icon 4.5 (13 Ratings)
eBook Oct 2017 266 pages 3rd Edition
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zł39.99 zł141.99
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Arrow left icon
Profile Icon John Arundel
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zł39.99 zł141.99
Full star icon Full star icon Full star icon Full star icon Half star icon 4.5 (13 Ratings)
eBook Oct 2017 266 pages 3rd Edition
eBook
zł39.99 zł141.99
Paperback
zł177.99
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Free Trial
eBook
zł39.99 zł141.99
Paperback
zł177.99
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Puppet 5 Beginner???s Guide

Chapter 2. Creating your first manifests

 

Beginnings are such delicate times.

 
 --Frank Herbert, 'Dune'

In this chapter, you'll learn how to write your first manifest with Puppet, and how to put Puppet to work configuring a server. You'll also understand how Puppet compiles and applies a manifest. You'll see how to use Puppet to manage the contents of files, how to install packages, and how to control services.

Creating your first manifests

Hello, Puppet – your first Puppet manifest

The first example program in any programming language, by tradition, prints hello, world. Although we can do that easily in Puppet, let's do something a little more ambitious, and have Puppet create a file on the server containing that text.

On your Vagrant box, run the following command:

sudo puppet apply /examples/file_hello.pp
Notice: Compiled catalog for ubuntu-xenial in environment production in 0.07 seconds
Notice: /Stage[main]/Main/File[/tmp/hello.txt]/ensure: defined content as '{md5}22c3683b094136c3398391ae71b20f04'
Notice: Applied catalog in 0.01 seconds

We can ignore the output from Puppet for the moment, but if all has gone well, we should be able to run the following command:

cat /tmp/hello.txt
hello, world

Understanding the code

Let's look at the example code to see what's going on (run cat /example/file_hello.pp, or open the file in a text editor):

file { '/tmp/hello.txt':
  ensure  => file...

Managing packages

Another key resource type in Puppet is the package. A major part of configuring servers by hand involves installing packages, so we will also be using packages a lot in Puppet manifests. Although every operating system has its own package format, and different formats vary quite a lot in their capabilities, Puppet represents all these possibilities with a single package type. If you specify in your Puppet manifest that a given package should be installed, Puppet will use the appropriate package manager commands to install it on whatever platform it's running on.

As you've seen, all resource declarations in Puppet follow this form:

RESOURCE_TYPE { TITLE:
  ATTRIBUTE => VALUE,
  ...
}

package resources are no different. The RESOURCE_TYPE is package, and the only attribute you usually need to specify is ensure, and the only value it usually needs to take is installed:

package { 'cowsay':
  ensure => installed,
}

Try this example:

sudo puppet apply /examples...

Services

The third most important Puppet resource type is the service: a long-running process that either does some continuous kind of work, or waits for requests and then acts on them. For example, on most systems, the sshd process runs all the time and listens for SSH login attempts.

Puppet models services with the service resource type. The service resources look like the following example (you can find this in service.pp in the /examples/ directory. From now on, I'll just give the filename of each example, as they are all in the same directory):

service { 'sshd':
  ensure => running,
  enable => true,
}

The ensure parameter governs whether the service should be running or not. If its value is running, then as you might expect, Puppet will start the service if it is not running. If you set ensure to stopped, Puppet will stop the service if it is running.

Services may also be set to start when the system boots, using the enable parameter. If enable is set to true, the...

Summary

In this chapter, we've seen how a manifest is made up of Puppet resources. You've learned how to use Puppet's file resource to create and modify files, how to install packages using the package resource, and how to manage services with the service resource. We've looked at the common package-file-service pattern and seen how to use the notify attribute on a resource to send a message to another resource indicating that its configuration has been updated. We've covered the use of the require attribute to make dependencies between resources explicit, when necessary.

You've also learned to use puppet resource to inspect the current state of the system according to Puppet, and puppet describe to get command-line help on all Puppet resources. To check what Puppet would change on the system without actually changing it, we've introduced the --noop and --show_diff options to puppet apply.

In the next chapter, we'll see how to use the version control...

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Key benefits

  • Develop skills to run Puppet 5 on single or multiple servers without hiccups
  • Use Puppet to create and manage cloud resources such as Amazon EC2 instances
  • Take full advantage of powerful new features of Puppet including loops, data types, Hiera integration, and container management

Description

Puppet 5 Beginner’s Guide, Third Edition gets you up and running with the very latest features of Puppet 5, 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.

Who is this book for?

Puppet 5 Beginner’s Guide, Third Edition is designed for those who are new to Puppet, including system administrators and developers who are looking to manage computer server systems for configuration management. No prior programming or system administration experience is assumed.

What you will learn

  • •Understand the latest Puppet 5 features
  • •Install and set up Puppet and discover the latest and most advanced features
  • •Configure, build, and run containers in production using Puppet's industry-leading Docker support
  • •Deploy configuration files and templates at super-fast speeds and manage user accounts and access control
  • •Automate your IT infrastructure
  • •Use the latest features in Puppet 5 onward and its official modules
  • •Manage clouds, containers, and orchestration
  • •Get to know the best practices to make Puppet more reliable and increase its performance

Product Details

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Publication date, Length, Edition, Language, ISBN-13
Publication date : Oct 05, 2017
Length: 266 pages
Edition : 3rd
Language : English
ISBN-13 : 9781788395366
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Product Details

Publication date : Oct 05, 2017
Length: 266 pages
Edition : 3rd
Language : English
ISBN-13 : 9781788395366
Vendor :
Puppet
Tools :

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Table of Contents

13 Chapters
1. Getting started with Puppet Chevron down icon Chevron up icon
2. Creating your first manifests Chevron down icon Chevron up icon
3. Managing your Puppet code with Git Chevron down icon Chevron up icon
4. Understanding Puppet resources Chevron down icon Chevron up icon
5. Variables, expressions, and facts Chevron down icon Chevron up icon
6. Managing data with Hiera Chevron down icon Chevron up icon
7. Mastering modules Chevron down icon Chevron up icon
8. Classes, roles, and profiles Chevron down icon Chevron up icon
9. Managing files with templates Chevron down icon Chevron up icon
10. Controlling containers Chevron down icon Chevron up icon
11. Orchestrating cloud resources Chevron down icon Chevron up icon
12. Putting it all together Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

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Full star icon Full star icon Full star icon Full star icon Half star icon 4.5
(13 Ratings)
5 star 61.5%
4 star 23.1%
3 star 15.4%
2 star 0%
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Joshua Oct 24, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I've been using Puppet for some time now, and picked this book up after many great recommendations across the internet.John is such a kind hearted and pedagogically focussed individual, and his book reflects this. Though this is titled as a Puppet Beginners Guide, don't let that put you off. Having read this cover to cover, I've found that my own Puppet knowledge has increased, and I've started rewriting and making use of a lot of the concepts introduced in this book, some of which are idiomatic.I would recommend this book to anyone looking for a guide on how to use Puppet from start to finish, whether you 'think you know it all', or whether you are just curious. The style of John's writing makes it a real page turner, and the content does not become dry at any point.I have learned a lot from this book, and would urge John to write a follow-up, or 'Intermediates Guide to Puppet'.
Amazon Verified review Amazon
Ridgeback Dad Dec 13, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
It really doesn’t matter if you’re new to the team or a grizzled DevOps veteran - if you’re wanting to learn more about Puppet, “Puppet 5 Beginner’s Guide” will quickly make you productive and proficient in Puppet 5.Puppet 5 Beginner’s Guide walks you through it all! From installing Puppet and packages, manifests, configuration files as well as how to schedule jobs all the while showing you how to provisioning systems (and containers) locally or in the cloud. Did I mention that he also walks you through git?!?On a side note, I typically don't do reviews of any of the books I purchase, but I felt that book deserved a review!
Amazon Verified review Amazon
Dieter Lievens Jul 23, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This book is arguably one of the finest technical books I've ever read on what is arguably a pretty vast subject. What I truly like about it is that the aim of the book is clearly to just show the reader how it's done. Some other books dedicate entire chapters on edge-cases and feel more like Phd-style reference books. Not this one.This book will not make you a puppet-guru. Nor does it claim to have this as a goal. This book will give you a fine starting point to become one, however. And anything not mentioned in this book will most likely be covered on stackoverflow.
Amazon Verified review Amazon
Lev Shulman Jan 30, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
As an experienced programmer and recent devops engineer, this was a great find for a total Puppet newbie like myself. Well written, with straightforward examples that work, and ends with a demo of how to put it all together. The book provides some sample code on github to use as a skeleton for Puppet projects -- exactly what I needed.
Amazon Verified review Amazon
M. Dimitrov Feb 24, 2021
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Für den einstieg in Puppet sehr gut. Auch wenn zum teil nicht mehr auf dem allerneusten Stand.
Amazon Verified review Amazon
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