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 10

  1. Correct answer: (A) False. A container is a process, not a VM.
  2. Correct answer: (B) If marked as privileged, yes. A privileged container can access a host's resources just like a privileged process can.
  3. Correct answer: (C) Both. Attackers will string together multiple vulnerabilities to gain access to their target.
  4. Correct answer: (B) By comparing the Pod's requested capabilities and the policies authorized via the union of the Pod's creator and its own ServiceAccount. Policies can't be explicitly set.
  5. Correct answer: (A) An admission controller that inspects all Pods on creation and when they're updated. Policy enforcement is not handled by the PodSecurityPolicy API, only the definition of policies.
  6. Correct answer: (B) False. It will take multiple years between determining a replacement, implementing it, and then the deprecation process.
  7. Correct answer: (B) False. You wouldn't run a process as root on your server...