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These materials are © 2015 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. Mobile to Mainframe DevOps IBM Limited Edition By Rosalind Radcliffe These materials are © 2015 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. Mobile to Mainframe DevOps For Dummies®, IBM Limited Edition Published by John Wiley & Sons, Inc. 111 River St. Hoboken, NJ 07030‐5774 www.wiley.com Copyright © 2015 by John Wiley & Sons, Inc. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copyright Act, without the prior written permission of the Publisher. Requests to the Publisher for permission should be addressed to the Permissions Department, John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, (201) 748‐6011, fax (201) 748‐6008, or online at http://www.wiley.com/go/permissions. Trademarks: Wiley, For Dummies, the Dummies Man logo, The Dummies Way, Dummies.com, Making Everything Easier, and related trade dress are trademarks or registered trademarks of John Wiley & Sons, Inc. and/or its affiliates in the United States and other countries, and may not be used without written permission. IBM and the IBM logo are registered trademarks of International Business Machines Corporation. All other trademarks are the property of their respective owners. John Wiley & Sons, Inc., is not associated with any product or vendor mentioned in this book. LIMIT OF LIABILITY/DISCLAIMER OF WARRANTY: THE PUBLISHER AND THE AUTHOR MAKE NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY OR COMPLETENESS OF THE CONTENTS OF THIS WORK AND SPECIFICALLY DISCLAIM ALL WARRANTIES, INCLUDING WITHOUT LIMITATION WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE. NO WARRANTY MAY BE CREATED OR EXTENDED BY SALES OR PROMOTIONAL MATERIALS. THE ADVICE AND STRATEGIES CONTAINED HEREIN MAY NOT BE SUITABLE FOR EVERY SITUATION. THIS WORK IS SOLD WITH THE UNDERSTANDING THAT THE PUBLISHER IS NOT ENGAGED IN RENDERING LEGAL, ACCOUNTING, OR OTHER PROFESSIONAL SERVICES. IF PROFESSIONAL ASSISTANCE IS REQUIRED, THE SERVICES OF A COMPETENT PROFESSIONAL PERSON SHOULD BE SOUGHT. NEITHER THE PUBLISHER NOR THE AUTHOR SHALL BE LIABLE FOR DAMAGES ARISING HEREFROM. 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ISBN: 978‐1‐119‐14979‐8 (pbk); ISBN: 978‐1‐119‐14980‐4 (ebk) Manufactured in the United States of America 10 9 8 7 6 5 4 3 2 1 Publisher’s Acknowledgments Some of the people who helped bring this book to market include the following: Project Editor: Carrie A. Johnson Production Editor: Siddique Shaik Editorial Manager: Rev Mengle Business Development Representative: Acquisitions Editor: Steve Hayes Sue Blessing Author Acknowledgments I would like to thank those that helped me in putting this book together. From providing content, reviewing, and just simply helping me get the right words, you all contributed in your own ways. Thank you Richard Szulewski, Sherri Hanna, Frank DeGillio, Rohith Ashok, Carmen DeArdo, and Mustafa Kapadia for providing great content for the “Making a DevOps Transition” chapter, and Jacqueline Allen for all your careful reading. And lastly thanks to Hayden Lindsey, Randy Newell, and Saleem Padani for their support in commissioning me to write this book. These materials are © 2015 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. Table of Contents Introduction . 1 About This Book ........................................................................ 1 Icons Used in This Book ............................................................ 2 Beyond the Book ........................................................................ 2 Chapter 1: Understanding the Value of the Mainframe . 3 Defining Mainframes and Their Importance ........................... 4 Calculating the Value of the Mainframe .................................. 5 Placing Mainframe at the Heart of the Hybrid IT World ....... 6 Hybrid infrastructure ...................................................... 7 Hybrid data ....................................................................... 7 Hybrid applications ......................................................... 7 Integrating Systems of Engagement with Systems of Record ................................................................................. 8 Chapter 2: Understanding the Typical Mainframe Application Development Challenges . 11 Understanding Application Complexity ................................ 11 Measuring Risk in Changing Business Critical Applications ............................................................ 13 System Availability .................................................................. 14 Manual Test Processes............................................................ 14 Fragmentation of Skills and Tools ......................................... 15 Siloed Teams ............................................................................ 15 Chapter 3: DevOps and the Mainframe: Mission Possible? . 17 Defining DevOps? ..................................................................... 17 Plan .................................................................................. 19 Develop/test ................................................................... 20 Deploy ............................................................................. 22 Operate ........................................................................... 23 Why DevOps Is Critical for Mainframe Environments ........ 24 The Balancing Act: People, Process, and Tools ................... 26 People .............................................................................. 26 Processes ........................................................................ 27 Tools ................................................................................ 28 These materials are © 2015 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. iv Mobile to Mainframe DevOps For Dummies, IBM Limited Edition What Problems Does DevOps Solve? .................................... 28 Improving Application Development with DevOps ............. 29 Chapter 4: Looking at DevOps Best Practices for z Systems . 31 Adopting DevOps Best Practices for z Systems ................... 31 Modern development practices and tools ................. 32 Test environments ......................................................... 33 Common deployment .................................................... 35 Improving Productivity and Optimizing Systems ................ 35 Improving productivity ................................................. 35 Optimizing systems ....................................................... 36 Chapter 5: Building for the Modern Omni‐Channel World . 39 Understanding How Mobile and z Folks Work Together .... 39 Looking at Full Application Lifecycle Management ............. 42 Chapter 6: Seeing DevOps Success Stories in the Enterprise . 45 Development Modernization .................................................. 45 Large financial organization ......................................... 45 CICS development organization ................................... 47 Automated Testing and Deployment ..................................... 48 Full Practice Adoption ............................................................. 49 Chapter 7: Making a DevOps Transition . 51 Getting Started with DevOps .................................................. 51 Guiding You through a DevOps Transformation Process .................................................................................. 52 Chapter 8: Understanding Where DevOps Can Take You . 57 How Cloud and DevOps Come Together in the Enterprise .............................................................................. 57 Building the Next Generation Enterprise IT Skills ............... 62 Fit for Purpose Platforms ........................................................ 63 Myth Busters for Mainframe DevOps .................................... 64 These materials are © 2015 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. Introduction evOps (short for Development and Operations) seems Dto have appeared with the advent of “born on the web” companies. However, today there’s a lot of hype about the word and questions if DevOps applies to traditional enterprise IT organizations. DevOps not only applies to traditional IT organizations but also it’s critical to the long‐term success of companies.

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