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

Chapter 8

  1. Correct answer: (A) False. RBAC is the preferred method for authorizing resources.
  2. Correct answer: (C) apiGroups, resources, verbs.
  3. Correct answer: (A) Kubernetes API reference. This is an invaluable tool that will list every URL for an API. This can be used to determine the resource.
  4. Correct answer: (B) Define a ClusterRole and reference it in each namespace as a RoleBinding. This way, changes to the ClusterRole are reflected whenever it is referenced.
  5. Correct answer: (D) Whenever possible, RoleBindings and ClusterRoleBindings should reference groups. Referencing users directly is an anti-pattern that is difficult to maintain, audit, and debug.
  6. Correct answer: (B) False. RBAC requires all rights to be enumerated.
  7. Correct answer: (B) False. Custom authorization webhooks are also available.