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Learn Docker - Fundamentals of Docker 19.x

You're reading from   Learn Docker - Fundamentals of Docker 19.x Build, test, ship, and run containers with Docker and Kubernetes

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Product type Paperback
Published in Mar 2020
Publisher Packt
ISBN-13 9781838827472
Length 592 pages
Edition 2nd Edition
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Author (1):
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Dr. Gabriel N. Schenker Dr. Gabriel N. Schenker
Author Profile Icon Dr. Gabriel N. Schenker
Dr. Gabriel N. Schenker
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Table of Contents (25) Chapters Close

Preface 1. Section 1: Motivation and Getting Started
2. What Are Containers and Why Should I Use Them? FREE CHAPTER 3. Setting Up a Working Environment 4. Section 2: Containerization, from Beginner to Black Belt
5. Mastering Containers 6. Creating and Managing Container Images 7. Data Volumes and Configuration 8. Debugging Code Running in Containers 9. Using Docker to Supercharge Automation 10. Advanced Docker Usage Scenarios 11. Section 3: Orchestration Fundamentals and Docker Swarm
12. Distributed Application Architecture 13. Single-Host Networking 14. Docker Compose 15. Orchestrators 16. Introduction to Docker Swarm 17. Zero-Downtime Deployments and Secrets 18. Section 4: Docker, Kubernetes, and the Cloud
19. Introduction to Kubernetes 20. Deploying, Updating, and Securing an Application with Kubernetes 21. Monitoring and Troubleshooting an App Running in Production 22. Running a Containerized App in the Cloud 23. Assessments 24. Other Books You May Enjoy

Questions

To assess your understanding of the topics that were discussed in this chapter, please answer the following questions:

  1. In a few simple sentences, explain to an interested layman what zero-downtime deployment means.
  2. How does SwarmKit achieve zero-downtime deployments?
  3. Contrary to traditional (non-containerized) systems, why does a rollback in Docker Swarm just work? Explain this in a few short sentences.
  4. Describe two to three characteristics of a Docker secret.
  5. You need to roll out a new version of the inventory service. What does your command look like? Here is some more information:
    • The new image is called acme/inventory:2.1.
    • We want to use a rolling update strategy with a batch size of two tasks.
    • We want the system to wait for one minute after each batch.
  6. You need to update an existing service named inventory with a new password that is provided through a Docker...
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