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)

CI/CD and CI/CD pipelines

You may have already heard the term CI/CD. It comprises the two main acronyms people use when talking about modern application deployment. While CI stands for Continuous Integration, CD has two meanings; one of them is Continuous Deployment, and another one is Continuous Delivery. All three terms are easy to understand, and are described as follows:

  • Continuous Integration: Emphasizes creating and building automation tests against application builds, as well as merging updates into a single branch as often as possible. It helps to catch bugs early on and to avoid the integration difficulties that developers usually encounter when developing new code and merging changes into different branches.
  • Continuous Delivery: Helps to extend Continuous Integration processes, to push new code from the development to the production stage in a reproducible fashion....