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


  1. A single Docker image can be used on any Docker host, regardless of the architecture used.

    A. True

    B. False

  2. What does Docker use to merge multiple image layers into a single filesystem?

    A. Merged filesystem

    B. NTFS filesystem

    C. EXT4 filesystem

    D. Union filesystem

  3. What is the most commonly used Docker storage driver when using a Kernel that is above version 4.0?

    A. AUFS

    B. ZFS

    C. VFS

    D. Overlay2

  4. When you edit a container's filesystem interactively, what layer are the changes written to?

    A. Operating system layer

    B. Bottom-most layer

    C. Container layer

    D. Ephemeral layer

  5. Assuming the image contains the required binaries, what Docker command allows you to gain access to a container's bash prompt?

    A. docker shell -it <container> /bin/bash

    B. docker run -it <container> /bin/bash

    C. docker exec -it <container> /bin/bash

    D. docker spawn -it <container> /bin/bash

  6. When a container is stopped, the Docker daemon will delete all traces of the container.

    A. True

    B. False

  7. What command will show you a list of all containers, including any stopped containers?

    A. docker ps -all

    B. docker ps -a

    C. docker ps -list

    D. docker list all