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

In Chapter 1, Introduction to Kubernetes and Containers, we saw that Kubernetes is a portable and highly extensible open-source container orchestration tool. It provides very powerful capabilities that can be used to manage containerized workloads at scale. In the previous chapter, you got the big picture of how the different components of Kubernetes work together to achieve the desired goals. We also demonstrated some basic usage of kubectl in Chapter 2, An Overview of Kubernetes. In this chapter, we will take a closer look at this utility and look at how we can make use of its potential.

To reiterate, kubectl is a command-line utility for interacting with Kubernetes clusters and performing various operations. There are two ways to use kubectl while managing your cluster - imperative management, which focuses on commands rather than the YAML manifests to achieve the desired state, and declarative management, which focuses on creating and updating YAML manifest files...