OpenShift in Action PDF
Preview OpenShift in Action
Jamie Duncan John Osborne Foreword by Jim Whitehurst M A N N I N G OpenShift in Action OpenShift in Action JAMIE DUNCAN JOHN OSBORNE MANNING SHELTER ISLAND For online information and ordering of this and other Manning books, please visit www.manning.com. The publisher offers discounts on this book when ordered in quantity. For more information, please contact Special Sales Department Manning Publications Co. 20 Baldwin Road PO Box 761 Shelter Island, NY 11964 Email: [email protected] ©2018 by Manning Publications Co. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by means electronic, mechanical, photocopying, or otherwise, without prior written permission of the publisher. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in the book, and Manning Publications was aware of a trademark claim, the designations have been printed in initial caps or all caps. Recognizing the importance of preserving what has been written, it is Manning’s policy to have the books we publish printed on acid-free paper, and we exert our best efforts to that end. Recognizing also our responsibility to conserve the resources of our planet, Manning books are printed on paper that is at least 15 percent recycled and processed without the use of elemental chlorine. Manning Publications Co. Development editor: Toni Arritola 20 Baldwin Road Review editor: Ivan Martinovic´ PO Box 761 Technical development editor: Dani Cortés Shelter Island, NY 11964 Project manager: Kevin Sullivan Copyeditor: Tiffany Taylor Proofreader: Melody Dolab Technical proofreader: Eric Rich Typesetter: Gordan Salinovic Illustrations: Chuck Larson Cover designer: Marija Tudor ISBN 9781617294839 Printed in the United States of America 1 2 3 4 5 6 7 8 9 10 – EBM – 23 22 21 20 19 18 For Molly and Elizabeth. Thank you for your understanding, your immeasurable assistance, and making me take time off to play with the chickens. —J.D. To my wife and two daughters, thank you for always giving me spontaneous reasons to laugh. —J.O. brief contents P 1 F ................................................................1 ART UNDAMENTALS 1 ■ Getting to know OpenShift 3 2 ■ Getting started 20 3 ■ Containers are Linux 37 P 2 C - ...........................................59 ART LOUD NATIVE APPLICATIONS 4 ■ Working with services 61 5 ■ Autoscaling with metrics 80 6 ■ Continuous integration and continuous deployment 91 P 3 S ................................................125 ART TATEFUL APPLICATIONS 7 ■ Creating and managing persistent storage 127 8 ■ Stateful applications 147 P 4 O ............................................169 ART PERATIONS AND SECURITY 9 ■ Authentication and resource access 171 10 ■ Networking 194 11 ■ Security 217 vii contents foreword xv preface xvii acknowledgments xix about this book xx about the authors xxiii about the cover illustration xxiv P 1 F ......................................................1 ART UNDAMENTALS 1 Getting to know OpenShift 3 1.1 What is a container platform? 4 Containers in OpenShift 4 ■ Orchestrating containers 5 1.2 Examining the architecture 7 Integrating container images 7 ■ Accessing applications 7 Handling network traffic in your cluster 9 1.3 Examining an application 9 Building applications 9 ■ Deploying and serving applications 9 1.4 Use cases for container platforms 12 Technology use cases 12 ■ Use cases for businesses 13 When containers aren’t the answer 15 1.5 Solving container storage needs 15 ix
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