Preface

We are living in a world of such big and rapid changes. In the IT industry, things such as DevOps, the cloud, digital transformation, containers, and Kubernetes have emerged in the last few years and dramatically changed the way we develop, build, test, and deploy applications.

Among the big set of new technologies, only a few of them have become a sort of consensus in the industry, including the cloud, containers, and Kubernetes. Over the last few years, the authors of this book have worked with many customers that are on this cloud and container adoption journey – almost all of them have adopted some sort of Kubernetes distribution and one or more cloud providers. Most of them are experiencing the benefits of this adoption but also have to deal with many new challenges, such as maintaining standard environments, keeping them secure, and keeping costs under control.

That is why we decided to focus this book not only on OpenShift, which is one of the market leaders in enterprise Kubernetes, but also on multi-cluster management. This book is the result of years of experience in the field, designing architectures and deploying and operating OpenShift clusters, which we have tried to turn into words, pages, and chapters!

We are going to cover in this book answers to questions such as, what are the different architectural choices I have with OpenShift? How do I design the right architecture for my case? What are the different personas related to OpenShift, their main responsibilities, and their challenges? We will also walk through OpenShift deployment, troubleshooting, network, and security. CI/CD and GitOps are also covered in this book with some practical examples that you can use to learn how they can help you to increase the maturity level of your build and deployment process. Finally, we will go over some tools, such as Advanced Cluster Management and Advanced Cluster Security, that will help you to manage and secure multiple OpenShift clusters from a central standpoint.