Book Image

The Kubernetes Workshop

By : Zachary Arnold, Sahil Dua, Wei Huang, Faisal Masood, Mélony Qin, Mohammed Abu Taleb
Book Image

The Kubernetes Workshop

By: Zachary Arnold, Sahil Dua, Wei Huang, Faisal Masood, Mélony Qin, Mohammed Abu Taleb

Overview of this book

Thanks to its extensive support for managing hundreds of containers that run cloud-native applications, Kubernetes is the most popular open source container orchestration platform that makes cluster management easy. This workshop adopts a practical approach to get you acquainted with the Kubernetes environment and its applications. Starting with an introduction to the fundamentals of Kubernetes, you’ll install and set up your Kubernetes environment. You’ll understand how to write YAML files and deploy your first simple web application container using Pod. You’ll then assign human-friendly names to Pods, explore various Kubernetes entities and functions, and discover when to use them. As you work through the chapters, this Kubernetes book will show you how you can make full-scale use of Kubernetes by applying a variety of techniques for designing components and deploying clusters. You’ll also get to grips with security policies for limiting access to certain functions inside the cluster. Toward the end of the book, you’ll get a rundown of Kubernetes advanced features for building your own controller and upgrading to a Kubernetes cluster without downtime. By the end of this workshop, you’ll be able to manage containers and run cloud-based applications efficiently using Kubernetes.
Table of Contents (20 chapters)


About a decade ago, there was a lot of discussion over software development paradigms such as service-oriented architecture, agile development, and software design patterns. In hindsight, those were all great ideas, but only a few of them were practically adopted a decade ago.

One of the major reasons for the lack of adoption of these paradigms is that the underlying infrastructure couldn't offer the resources or capabilities for abstracting fine-grained software components and managing an optimal software development life cycle. Hence, a lot of duplicated efforts were still required for resolving some common issues of software development such as managing software dependencies and consistent environments, software testing, packaging, upgrading, and scaling.

In recent years, with Docker at the forefront, containerization technology has provided a new encapsulation mechanism that allows you to bundle your application, its runtime, and its dependencies, and also brings in a new angle to view the development of software. By using containerization technology, the underlying infrastructure gets abstracted away so that applications can be seamlessly moved among heterogeneous environments. However, along with the rising volume of containers, you may need orchestration tools to help you to manage their interactions with each other as well as to optimize the utilization of the underlying hardware.

That's where Kubernetes comes into play. Kubernetes provides a variety of options to automate deployment, scaling, and the management of containerized applications. It has seen explosive adoption in recent years and has become the de-facto standard in the container orchestration field.

As this is the first chapter of this book, we will start with a brief history of software development over the past few decades, and then illustrate the origins of containers and Kubernetes. We will focus on explaining what problems they can solve, and three key reasons why their adoption has seen a considerable rise in recent years.