Book Image

The Kubernetes Workshop

By : Zachary Arnold, Sahil Dua, Wei Huang, Faisal Masood, Mélony Qin, Mohammed Abu Taleb
5 (1)
Book Image

The Kubernetes Workshop

5 (1)
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)
Preface

Summary

Kubernetes treats Pods as ephemeral entities, and ideally you would not deploy any application or a microservice in an individual Pod. Kubernetes offers various controllers to leverage various benefits, including automatic replication, health monitoring, and automatic scaling.

In this chapter, we covered different kinds of controllers and understood when to use each of them. We created ReplicaSets and observed how they manage Pods. We learned when to use DaemonSets and StatefulSets. We also created a Deployment and learned how we can scale up and down the number of replicas and roll back to an earlier version of the Deployment. Finally, we learned how to create Jobs for one-time tasks. All of these controllers come into play when you want to deploy a production-ready application or workload, as you will see in the upcoming chapters.

In the next chapter, we will see how we can discover and access the Pods or replicas managed by a Deployment or a ReplicaSet.