Book Image

Kubernetes – An Enterprise Guide - Second Edition

By : Marc Boorshtein, Scott Surovich
Book Image

Kubernetes – An Enterprise Guide - Second Edition

By: Marc Boorshtein, Scott Surovich

Overview of this book

Kubernetes has taken the world by storm, becoming the standard infrastructure for DevOps teams to develop, test, and run applications. With significant updates in each chapter, this revised edition will help you acquire the knowledge and tools required to integrate Kubernetes clusters in an enterprise environment. The book introduces you to Docker and Kubernetes fundamentals, including a review of basic Kubernetes objects. You’ll get to grips with containerization and understand its core functionalities such as creating ephemeral multinode clusters using KinD. The book has replaced PodSecurityPolicies (PSP) with OPA/Gatekeeper for PSP-like enforcement. You’ll integrate your container into a cloud platform and tools including MetalLB, externalDNS, OpenID connect (OIDC), Open Policy Agent (OPA), Falco, and Velero. After learning to deploy your core cluster, you’ll learn how to deploy Istio and how to deploy both monolithic applications and microservices into your service mesh. Finally, you will discover how to deploy an entire GitOps platform to Kubernetes using continuous integration and continuous delivery (CI/CD).
Table of Contents (17 chapters)
15
Other Books You May Enjoy
16
Index

Questions

  1. A single Docker image can be used on any Docker host, regardless of the architecture used.
    1. True
    2. False
  2. What does Docker use to merge multiple image layers into a single filesystem?
    1. Merged filesystem
    2. NTFS filesystem
    3. EXT4 filesystem
    4. Union filesystem
  3. Kubernetes is only compatible with the Docker runtime engine.
    1. True
    2. False
  4. When you edit a container's filesystem interactively, what layer are the changes written to?
    1. Operating system layer
    2. Bottom-most layer
    3. Container layer
    4. Ephemeral layer
  5. Assuming the image contains the required binaries, what Docker command allows you to gain access to a container's bash prompt?
    1. docker shell -it <container> /bin/bash
    2. docker run -it <container> /bin/bash
    3. docker exec -it <container> /bin/bash
    4. docker spawn -it <container> /bin/bash
  6. When a container is stopped, the Docker daemon will delete all traces of the container.
    1. True
    2. False
  7. What command will show you a list of all containers, including any stopped containers?
    1. docker ps -all
    2. docker ps -a
    3. docker ps -list
    4. docker list all

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