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

Section 2: Creating Kubernetes Development Clusters, Understanding objects, and Exposing Services

In this second section, we will move onto Kubernetes clusters and objects. The first chapter in this section will explain how to use a popular tool for creating Kubernetes clusters, called KinD. We will explain how to create differnet clusters that range from a single-node cluster to a multiple-node cluster that uses HAProxy as a load balancer for the worker nodes. With a working Kubernetes cluster, we move onto the next chapter, which will review the Kubernetes infrastructure components and the most commonly used Kubernetes objects. We close out this section by explaining a commonly misunderstood topic, exposing services in a cluster. We will look at Kubernetes service types, discuss how to use Layer 7 and Layer 4 load balancers, and see how to register dynamic names for services using External-DNS.

This part of the book comprises the following chapters: