Book Image

Kubernetes and Docker - An Enterprise Guide

By : Scott Surovich, Marc Boorshtein
Book Image

Kubernetes and Docker - An Enterprise Guide

By: Scott Surovich, Marc Boorshtein

Overview of this book

Containerization has changed the DevOps game completely, with Docker and Kubernetes playing important roles in altering the flow of app creation and deployment. This book will help you acquire the knowledge and tools required to integrate Kubernetes clusters in an enterprise environment. The book begins by introducing you to Docker and Kubernetes fundamentals, including a review of basic Kubernetes objects. You’ll then get to grips with containerization and understand its core functionalities, including how to create ephemeral multinode clusters using kind. As you make progress, you’ll learn about cluster architecture, Kubernetes cluster deployment, and cluster management, and get started with application deployment. Moving on, you’ll find out how to integrate your container to a cloud platform and integrate tools including MetalLB, externalDNS, OpenID connect (OIDC), pod security policies (PSPs), Open Policy Agent (OPA), Falco, and Velero. Finally, you will discover how to deploy an entire platform to the cloud using continuous integration and continuous delivery (CI/CD). By the end of this Kubernetes book, you will have learned how to create development clusters for testing applications and Kubernetes components, and be able to secure and audit a cluster by implementing various open-source solutions including OpenUnison, OPA, Falco, Kibana, and Velero.
Table of Contents (20 chapters)
1
Section 1: Docker and Container Fundamentals
5
Section 2: Creating Kubernetes Development Clusters, Understanding objects, and Exposing Services
9
Section 3: Running Kubernetes in the Enterprise

An overview of Kubernetes components

In any infrastructure, it is always a good idea to understand how the systems work together to provide services. With so many installer options out there today, many Kubernetes users have not had the need to understand how Kubernetes components integrate.

A few short years ago, if you wanted to run a Kubernetes cluster, you needed to install and configure each component manually. It was a steep learning curve to install a functioning cluster, which often led to frustration, causing many people and companies to say "Kubernetes is just too difficult". The advantage of installing manually was that you truly understood how each component interacted, and if your cluster ran into issues after installation, you knew what to look for.

Nowadays, most people will click a button on a cloud provider and have a fully functioning Kubernetes cluster in minutes. On-premise installations have become just as easy, with options from Google, RedHat...