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LEARNING PUPPET
LEARNING PUPPET

LEARNING PUPPET: Build intelligent software stacks with the Puppet configuration management suite

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Profile Icon Jussi Heinonen
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€18.99 per month
Full star icon Full star icon Full star icon Half star icon Empty star icon 3.3 (3 Ratings)
Paperback Aug 2015 304 pages 1st Edition
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€8.99 €29.99
Paperback
€36.99
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Renews at €18.99p/m
Arrow left icon
Profile Icon Jussi Heinonen
Arrow right icon
€18.99 per month
Full star icon Full star icon Full star icon Half star icon Empty star icon 3.3 (3 Ratings)
Paperback Aug 2015 304 pages 1st Edition
eBook
€8.99 €29.99
Paperback
€36.99
Subscription
Free Trial
Renews at €18.99p/m
eBook
€8.99 €29.99
Paperback
€36.99
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Renews at €18.99p/m

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Table of content icon View table of contents Preview book icon Preview Book

LEARNING PUPPET

Chapter 2. Managing Packages in Puppet

This chapter is not just about learning how to manage packages in Puppet, although the package management is one of the key deliverables of this chapter. Before we dive into this, we have to revert our machine image to the snapshot revision that we created in Chapter 1, Puppet Development in Isolation, so that all of the changes we made in the virtual machine earlier are wiped out.

Once we have reverted to the snapshot, we will take a look at how to configure shared folders and host-only networking that will be used later in this book.

Moving on, we'll do more "snapshotting", and learn how to create a virtual machine clone from the snapshot, which will be used for our web server node that we are going to build in Chapter 3, My First Puppet Module.

Once the virtual machine clone is run, we will purge software packages from the system to create the slimmed down version of the Puppet Learning VM that has a smaller memory footprint...

Restoring a snapshot

In Chapter 1, Puppet Development in Isolation, we learned how to snapshot the virtual machine before we started to work on it. To go back to the original state of the virtual machine, we need to restore the snapshot. In order to restore a snapshot, you should shut down the virtual machine if it is currently running. This can be done from the command line on the virtual machine with the poweroff command. Alternatively, we can shut down the virtual machine using the VirtualBox Manager by navigating to Machine | Close | Power Off:

Restoring a snapshot

Once the virtual machine has shut down, we can restore the snapshot that we created in Chapter 1, Puppet Development in Isolation:

  1. Click on the Snapshots button in the top right-hand corner.
  2. Select the snapshot to restore. In Chapter 1, Puppet Development in Isolation, I called it Base image.
  3. Click on the Restore Snapshot button.
    Restoring a snapshot

Introducing VirtualBox Guest Additions

The VirtualBox Guest Additions is a package that unlocks a couple of handy features in the virtual machine that makes our development environment more usable. The features enabled by Guest Additions are the shared folders, mouse pointer integration, paravirtualized videocard, timesync, and shared clipboard. At the moment, we can only access the virtual machine through the console window that is provided by the VirtualBox Manager. Writing Puppet manifests using the text editor running inside the virtual machine is a bit clunky. Also, manifests that we create will get deleted when we restore the snapshot.

Shared folders

The VirtualBox Guest Additions provides a service called shared folders that enables us to share folders from the machine that VirtualBox is running on and access them directly from the virtual machine. This means that we are no longer bound to use the text editor inside the virtual machine, as we can use better text editors, such as Notepad...

Summary

I want to congratulate you for completing the development environment setup. I hope that this chapter provided you with some new skills in the areas of VirtualBox, Linux command line, and most importantly, how to manage packages using Puppet. From now on, we will shift our focus away from VirtualBox, and start building our development environment using Puppet.

Now, it is a good time to have a cup of tea and do a recap before diving into Chapter 3, My First Puppet Module. I'll see you there!

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Description

Puppet is a cross-platform, open source configuration management utility, which runs on various Unix, Linux, and Windows Microsoft platforms. It allows you to automate all your IT configurations, giving you control of what you do to each node, and also when and how you do it. You’ll be able to build and manage development, test, and production environments independently without requiring previous system administration experience. Learning Puppet is a step-by-step guide on how to get started with Puppet development and use Puppet modules as the building blocks to deploy production-ready application cluster in virtual environment. You will begin with the installation of development environment on the VirtualBox hypervisor and Puppet Learning VM that will be used as the platform for testing and development of Puppet modules. Next, you will learn how to manage virtual machines and snapshots effectively and enhance the development experience with advanced VirtualBox features. Later the book will focus on Puppet module development in detail. You will be guided through the process of utilizing existing modules that are available in the public module repository, write your own modules and use them to deploy a real-world web application that includes features such as monitoring and load balancing. You will then learn to scale your environment and turn your static configuration into a dynamic one through stored configurations and PuppetDB. Finally, the book will provide you with practical advice on Puppet troubleshooting and managing your environment with the wealth of features provided by the Puppet Enterprise console.

Who is this book for?

If you are new to configuration management and IT automation processes and are looking for better ways to manage system configuration changes at scale, this book is for you. Basic knowledge of Linux System Administration is a prerequisite.

What you will learn

  • Manage your system with Puppet instantly
  • Develop Puppet in an isolated development environment
  • Make your manifests reusable to avoid reinventing the wheel
  • Automate monitoring to improve the user experience through increased uptime
  • Enable nodes to communicate with each other via Puppet Master
  • Make environment configuration dynamic using stored configurations and PuppetDB
  • Extend Puppet beyond the builtin functionalities
  • Manage your environment through the Puppet Enterprise console

Product Details

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Publication date : Aug 31, 2015
Length: 304 pages
Edition : 1st
Language : English
ISBN-13 : 9781784399832
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Product Details

Publication date : Aug 31, 2015
Length: 304 pages
Edition : 1st
Language : English
ISBN-13 : 9781784399832
Languages :
Tools :

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Table of Contents

11 Chapters
1. Puppet Development in Isolation Chevron down icon Chevron up icon
2. Managing Packages in Puppet Chevron down icon Chevron up icon
3. My First Puppet Module Chevron down icon Chevron up icon
4. Monitoring Your Web Server Chevron down icon Chevron up icon
5. Load Balancing the Cluster Chevron down icon Chevron up icon
6. Scaling Up the Puppet Environment Chevron down icon Chevron up icon
7. Making the Configuration Dynamic Chevron down icon Chevron up icon
8. Extending Puppet Chevron down icon Chevron up icon
9. The Puppet Enterprise Console Chevron down icon Chevron up icon
10. Troubleshooting Puppet Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Half star icon Empty star icon 3.3
(3 Ratings)
5 star 33.3%
4 star 33.3%
3 star 0%
2 star 0%
1 star 33.3%
Kimmo Heinonen Oct 03, 2015
Full star icon Full star icon Full star icon Full star icon Full star icon 5
The only good book on Puppet available now.
Amazon Verified review Amazon
A. Wood Nov 21, 2017
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
For 15 years I've worked as a software engineer, team lead, architect for on-prem and cloud hosted enterprise solutions. My new career as a consultant has led me down the DevOps path. I have a possible client asking about using PowerShell DSC, Chef, and Puppet. I have experience with Chef and PowerShell DSC, but I've never used Puppet. I've heard about it. I follow their state of DevOps report. To have the ability to discuss Puppet, its benefits and drawbacks, I had to find resources that will teach me Puppet. Unfortunately, until I found this book, I couldn't find anything helpful. Heck, I couldn't find one internet site, even Puppet's, that provided instructions on how to properly install Puppet Enterprise. Every out-of-the-box installation would fail with LDAP error. So I went to Amazon and found this book. Hey! There's a VirtualBox image I can use that already has Puppet Enterprise installed. Great! Not only that, there are instructions for VirtualBox. Better yet, the Puppet examples are concise and do provide some real world examples such as installing and configuring a Tomcat server using the PuppetLabs Apache module.Overall, this book has been very helpful. The only thing keeping it from 5 stars is I've had to workaround some issues with the examples. They don't quit work word for word. But, a few Google searches fixed my issues.
Amazon Verified review Amazon
Andrew Jun 24, 2017
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
Poor
Amazon Verified review Amazon
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