Freeman - DevOps For Dummies

DevOps For Dummies

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Copyright 2019 by John Wiley & Sons, Inc., Hoboken, New Jersey

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Published simultaneously in Canada

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Library of Congress Control Number: 2019945514

ISBN: 978-1-119-55222-2

ISBN 978-1-119-55223-9 (ebk); ISBN 978-1-119-55224-6 (ebk)

1. Chapter 20
2. Chapter 21

1. Chapter 3
2. Chapter 4
3. Chapter 5
4. Chapter 6
5. Chapter 7
6. Chapter 8
7. Chapter 11
8. Chapter 12
9. Chapter 13
10. Chapter 14
11. Chapter 15
12. Chapter 16
13. Chapter 17
14. Chapter 18
15. Chapter 20

What is DevOps?

This question is one of the most common questions I get in my work and I hear it from experts and novices alike. Ive worked in technology for almost two decades and have been a DevOps researcher, strategist, and expert who has guided hundreds of technology leaders and engineers to make their software better, allowing them to deliver value to their customers faster and safer. Yet, many of us in this field still hear this question.

Unfortunately, a single, universally accepted definition of DevOps doesnt exist much to everyones chagrin. But if were honest, it probably doesnt matter; after all, having one clear definition codified in the Agile Manifesto didnt help the Agile community much, either.

With DevOps For Dummies, Emily Freeman has written a book about DevOps that you can read from cover to cover as a book, or use as a reference, or jump around in for a choose-your-own adventure exploration through DevOps concepts. Its a brilliant way to structure the content because DevOps covers some development, some operations, and a whole lot of culture plus a whole lot more. In this book, Emily has done a great job of digging into important concepts for teams implementing this new way of work, whether youre greenfield or brownfield or have no idea of what the words greenfield or brownfield mean.

Emily brings clear eyes and a fresh voice to the topic, crafting insightful narratives and breaking down concepts into clear writing. By coming into technology mid-career, she brings an understanding and comprehension that others who were born into the tech sometimes take for granted. Her writing communicates these (sometimes hidden) details effortlessly, walking the reader through the landscape with ease and wit.

Some of my favorite sections are those on developing code so that its clear and maintainable (check out , especially the part about peer review) and empowering teams to help you scale. I have too many favorite chapters and sections to list, so I urge you to find your own favorites and not to run out of sticky notes and highlighters!

I wish you the best of luck on your DevOps journey. Remember that where you start doesnt matter; what matters is that you keep going and keep improving.

Nicole Forsgren, Research & Strategy at Google Cloud and co-founder and CEO of DevOps Research and Assessment (DORA)

I believe that the greatest challenges facing the tech industry arent technical; theyre human. Think about it: Hardware and computing are more powerful than they ever have been. Automated tools remove the drudgery of rote work. Robust frameworks and libraries build shortcuts and functionality into applications for you. You can do more, faster, than ever before.

The problem that organizations face now is that of the social dynamics of humans on engineering teams. Specifically, those dynamics are the natural friction that arises from misaligned incentives and poorly communicated goals; the frustration in attempting to explain a concept or approach to someone who has a different expertise than you; and the fear people feel when they think about looking stupid in front of their colleagues or being automated out of a job.

DevOps addresses all these issues, and this book explains how.

Ive designed this book to be a resource that someone who has never heard of DevOps or doesnt know what it actually means can walk through to gain a broad understanding of DevOps and how it fits into the software development life cycle (SDLC) that is, the entire process of how software is developed and released. Although SDLC has traditionally used the word