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

Introduction

Let's take a moment to reflect on our progress through this series of chapters beginning from Chapter 11, Build Your Own HA Cluster. We started by setting up a Kubernetes cluster using kops to configure AWS infrastructure in a highly available manner. Then, we used Terraform and some scripting to improve the stability of our cluster and deploy our simple counter app. After this, we began hardening the security and increasing the availability of our app using Kubernetes/cloud-native principles. Finally, we learned how to run a stateful database responsible for using transactions to ensure that we always get a series of increasing numbers from our application.

In this chapter, we are going to explore how to leverage the data that already exists in Kubernetes about our applications to drive and automate decision-making processes around scaling them so that they are always the right size for our load. Because it takes time to observe application metrics, schedule...