Book Image

Learn OpenShift

By : Denis Zuev, Artemii Kropachev, Aleksey Usov
Book Image

Learn OpenShift

By: Denis Zuev, Artemii Kropachev, Aleksey Usov

Overview of this book

Docker containers transform application delivery technologies to make them faster and more reproducible, and to reduce the amount of time wasted on configuration. Managing Docker containers in the multi-node or multi-datacenter environment is a big challenge, which is why container management platforms are required. OpenShift is a new generation of container management platforms built on top of both Docker and Kubernetes. It brings additional functionality to the table, something that is lacking in Kubernetes. This new functionality significantly helps software development teams to bring software development processes to a whole new level. In this book, we’ll start by explaining the container architecture, Docker, and CRI-O overviews. Then, we'll look at container orchestration and Kubernetes. We’ll cover OpenShift installation, and its basic and advanced components. Moving on, we’ll deep dive into concepts such as deploying application OpenShift. You’ll learn how to set up an end-to-end delivery pipeline while working with applications in OpenShift as a developer or DevOps. Finally, you’ll discover how to properly design OpenShift in production environments. This book gives you hands-on experience of designing, building, and operating OpenShift Origin 3.9, as well as building new applications or migrating existing applications to OpenShift.
Table of Contents (24 chapters)

Container management systems overview

Containers offer unmatched benefits in terms of density, deployment speed, and scalability in comparison to virtualization. But containers by themselves are not enough to match all the requirements of today's business, which expects the infrastructure to be adaptable to dynamic challenges. It is quite simple to start and manage a couple dozen containers, but things get complicated when the number climbs to hundreds, which is very common for large workloads. This is where Container Orchestration Engines (COE) come in. They bring true power to containers, offering various mechanisms to deploy, destroy, and scale multiple containers rapidly.

There are multiple container management solutions available, with the most popular being Kubernetes and Docker Swarm:

  • Kubernetes: First released in July 2015, Kubernetes comes directly from Borg—...