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)
Section 1: Docker and Container Fundamentals
Section 2: Creating Kubernetes Development Clusters, Understanding objects, and Exposing Services
Section 3: Running Kubernetes in the Enterprise

Chapter 14

  1. Correct answer: (A) False. It's not a requirement, but it certainly makes life easier!
  2. Correct answer: (D) None of the above. There is no minimum number of steps. How you implement your pipelines will depend on your own requirements.
  3. Correct answer: (C) Using Git as an authoritative source for operations configuration. Instead of interacting directly with the Kubernetes API, you store your objects in a Git repository, letting a controller keep them in sync.
  4. Correct answer: (B) There are no standards; every project and vendor has their own implementation. For this chapter, we used Tekton, which is a combination of YAML, containers, and shell scripts. Amazon, Azure, and GitHub all store their pipeline scripts in the application source. There is no requirement for what you write it in.
  5. Correct answer: (B) Update the Deployment or StatefulSet manifest in Git, letting the GitOps controller update the objects in Kubernetes. The goal is to minimize the...