Book Image

The DevOps 2.4 Toolkit

By : Viktor Farcic
Book Image

The DevOps 2.4 Toolkit

By: Viktor Farcic

Overview of this book

Building on The DevOps 2.3 Toolkit: Kubernetes, Viktor Farcic brings his latest exploration of the Docker technology as he records his journey to continuously deploying applications with Jenkins into a Kubernetes cluster. The DevOps 2.4 Toolkit: Continuously Deploying Applications with Jenkins to a Kubernetes Cluster is the latest book in Viktor Farcic’s series that helps you build a full DevOps Toolkit. This book guides readers through the process of building, testing, and deploying applications through fully automated pipelines. Within this book, Viktor will cover a wide-range of emerging topics, including an exploration of continuous delivery and deployment in Kubernetes using Jenkins. It also shows readers how to perform continuous integration inside these clusters, and discusses the distribution of Kubernetes applications, as well as installing and setting up Jenkins. Work with Viktor and dive into the creation of self-adaptive and self-healing systems within Docker.
Table of Contents (12 chapters)
Now It Is Your Turn

What is GitOps and do we want it?

"Git is the only source of truth." If you understand that sentence, you know GitOps. Every time we want to apply a change, we need to push a commit to Git. Want to change the configuration of your servers? Commit a change to Git, and let an automated process propagate it to servers. Want to upgrade ChartMuseum? Change requirements.yaml, push the change to the k8s-prod repository, and let an automated process do the rest. Want to review a change before applying it? Make a pull request. Want to rollback a release? You probably get the point, and I can save you from listing hundreds of other "want to" questions.

Did we do GitOps in the previous chapter? Was our continuous deployment process following GitOps? The answer to both questions is no. We did keep the code, configurations, and Kubernetes definitions in Git. Most of it...