Jo Rhett - Learning MCollective: Parallel Server Management in Puppet and Chef
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Orchestrate change across server clusters in near realtime with MCollective, the framework that works in concert with Puppet, Chef, and other configuration management tools. Ideal for system administrators and operations or DevOps engineers at any level, this hands-on guide teaches you how to build and test a real installation of MCollective servers and clients in your environment.
Learn how to build an entire installation by hand, know where every configuration file lives, and understand every configuration parameter and what it means. Whether you manage a small environment or one thats immense in scale, this book shows you how to orchestrate specific actions faster and better than you do now.
- Tour MCollectives architecture, backbone, transport, and security controls
- Configure MCollective components to match your production environment
- Create and use collectives to handle thousands of remote MCollective agents
- Use ActiveMQ Network of Brokers to resolve multi-site or redundancy requirements
- Learn how to use community-built client and agent plugins, with concrete examples
- Create your own server and client plugins to perform a variety of actions
- Learn recommended best practices for using MCollective
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Jo Rhett
by Jo Rhett
Copyright 2014 Jo Rhett. All rights reserved.
Printed in the United States of America.
Published by OReilly Media, Inc. , 1005 Gravenstein Highway North, Sebastopol, CA 95472.
OReilly books may be purchased for educational, business, or sales promotional use. Online editions are also available for most titles (http://safaribooksonline.com). For more information, contact our corporate/institutional sales department: 800-998-9938 or corporate@oreilly.com .
- Editors: Courtney Nash and Brian Anderson
- Production Editor: Kara Ebrahim
- Copyeditor: Jasmine Kwityn
- Proofreader: Amanda Kersey
- Indexer: Judy McConville
- Interior Designer: David Futato
- Cover Designer: Ellie Volckhausen
- Illustrator: Rebecca Demarest
- August 2014: First Edition
- 2014-08-11: First Release
See http://oreilly.com/catalog/errata.csp?isbn=9781491945674 for release details.
Nutshell Handbook, the Nutshell Handbook logo, and the OReilly logo are registered trademarks of OReilly Media, Inc. Learning MCollective, the image of English Leicester sheep, and related trade dress are trademarks of OReilly Media, Inc.
Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and OReilly Media, Inc., was aware of a trademark claim, the designations have been printed in caps or initial caps.
While every precaution has been taken in the preparation of this book, the publisher and author assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein.
978-1-491-94567-4
[LSI]
This book will teach you to install and use the Marionette Collective, hereafter referred to as MCollective. It will outline how MCollective works and how MCollectives design provides value to you. Youll learn how to seamlessly orchestrate change on thousands of nodes worldwide or on a handful of nodes with a specific characteristic just as easily.
This book provides specific instruction on how to use configuration management tools like Puppet and Chef to deploy MCollective. It covers how MCollective can manipulate the Puppet and Chef agents and use data provided by them.
This book is primarily aimed at system administrators and operations or DevOps engineers. If you are responsible for development or production nodes, this book will provide you with useful tools to make your job easier than ever before. If you are using Puppet or Chef to manage your nodes, youre going to learn how MCollective snaps into your existing configuration management to give you instant control of your managed nodes. Within a month, youll wonder how you ever got along without it.
No matter what you call yourself, if you feel that you spend too much time managing computers, then this book is for you. Youd like to get it done faster so you can focus on something else. Youd like to do it more consistently, so that you dont have to chase down one-off problems in your reports. Or youve got some new demands that youre looking for a way to solve. If any of these statements fit, you will find MCollective to be one of the best tools in your toolbox.
This book will not be a tome filled with reference material irrelevant to the day-to-day system administrator exactly the opposite. Throughout this book, we will never stray from one simple goal: we focus all our efforts on how MCollective can help you do something faster or better than ever before.
This book will never tell you to run a script and not tell you what it does, or why. I hate modeling systems to determine what an installation script did, and I wont do this to you. In this book, you will build up the entire installation by hand. Youll know where every configuration file lives. Youll learn every configuration parameter and what it means.
And yes, then you will learn the Puppet modules and Chef cookbooks you can use to automate deployment seamlessly throughout your environment.
You may use any modern Linux, Unix, Mac, or Windows system and successfully follow the hands-on tutorials in this book.
Although well introduce a web client for MCollective, the majority of the process of configuring and enabling MCollective and utilization of client apps will be performed through the command line.
A beginner to system administration can follow every tutorial in this book. Any experience with scripts, coding, or configuration management will enhance what you can get out of this book, as we will spend some time documenting how MCollective can utilize and enhance each of those.
(OReilly) as they add more features to the working examples provided here.
discusses what MCollective does, how it works, and how it can be used to orchestrate change on your systems faster and easier than you could have imagined. Learn how MCollective is different from control systems that loop through each target and how true parallel execution can benefit your environment.
The remainder of will focus on getting you up and running with a working MCollective installation. You will learn the components that make up the MCollective infrastructure. Youll install and configure each in a manner suitable for your specific environment.
This wont be a test environment for training that doesnt match your real concerns; instead, youll perform real operations on hosts that match your production environment. Youll see how easy it is to deploy MCollective and exactly how powerful the tools it provides are.
takes you on a nuts-and-bolts tour inside MCollectives architecture, backbone, transport, and security controls. Youll learn about using a network of brokers to resolve multisite or redundancy requirements. Youll learn how to create and use collectives to handle thousands of MCollective agents spread around the world. After finishing this section, youll be able to fine-tune MCollective for your exact environment: small but globally diverse, immense in scale but localized, or a combination of both.
MCollective has an active developer and user community. directs you to online repositories of clients and agents built by others, as well as concrete examples of how to use others plugins in your environment.
In , you will create your own server and client plugins to perform any action you can conceive of. Youll learn how to create application clients and how to create listeners to collect registration details from the agent systems. Best of all, the secrets of collecting and processing responses using a directed reply will allow you to create self-healing systems.
This book provides explicit instructions for configuring and using MCollective from the command line without the use of an external tools.
The book documents and utilizes a Puppet module that can implement and control every feature of MCollective documented in this book. In , every configuration option is documented for both standalone and Puppet configuration.
The book documents a Chef cookbook that can be used to maintain MCollective and gives MCollective the ability to manage the Chef agent.
If you use Salt, Cfengine, or any other configuration-management system, the instructions here can be used to deploy MCollective. You will find it easy to create configuration policies from the examples in this book. The server plugin provided in , along with the section about how to interact with external commands, could be easily adjusted to control the management agent on each node.
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