Book Image

Docker and Kubernetes for Java Developers

By : Jarosław Krochmalski
Book Image

Docker and Kubernetes for Java Developers

By: Jarosław Krochmalski

Overview of this book

Imagine creating and testing Java EE applications on Apache Tomcat Server or Wildfly Application server in minutes along with deploying and managing Java applications swiftly. Sounds too good to be true? But you have a reason to cheer as such scenarios are only possible by leveraging Docker and Kubernetes. This book will start by introducing Docker and delve deep into its networking and persistent storage concepts. You will then proceed to learn how to refactor monolith application into separate services by building an application and then packaging it into Docker containers. Next, you will create an image containing Java Enterprise Application and later run it using Docker. Moving on, the book will focus on Kubernetes and its features and you will learn to deploy a Java application to Kubernetes using Maven and monitor a Java application in production. By the end of the book, you will get hands-on with some more advanced topics to further extend your knowledge about Docker and Kubernetes.
Table of Contents (12 chapters)
More Resources

Basic Kubernetes concepts

A cluster is a group of nodes; they can be physical servers or virtual machines that have the Kubernetes platform installed. The basic Kubernetes architecture is presented in the following diagram:

As you can see, the Kubernetes cluster consists of a Master node and a number of worker nodes with some components inside. While it may look scary and complicated at first glance, it will be easier to understand if we describe the concepts one by one, starting with the Pod.


The Pod consists of one or more Docker containers. This is the basic unit of the Kubernetes platform and an elementary piece of execution that Kubernetes works with. A diagram of the Pod is presented as following:

Containers running...