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)
11
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Installing the tools

To be able to manage Kubernetes cluster on Amazon EC2, we will need to install some command-line tools first. Of course, using the Amazon EC2 web interface is also possible. Spinning up a cluster is quite a complicated process; you will need to have a user with proper access and permissions, storage for a cluster state, EC2 instances to run your Kubernetes master and worker nodes, and so on. Doing everything manually is possible, but can be time consuming and error prone. Luckily, we have tools that can automate most of the things for us, this will be the AWS command-line client (awscli) and kops, Kubernetes operations, production Grade K8s installation, upgrades, and management. There are some requirements though. Kops runs on Linux and macOS, it's written in Go, like Docker. The awscli is written in Python, so let's focus on Python installation...