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Becoming KCNA Certified

You're reading from   Becoming KCNA Certified Build a strong foundation in cloud native and Kubernetes and pass the KCNA exam with ease

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Product type Paperback
Published in Feb 2023
Publisher Packt
ISBN-13 9781804613399
Length 306 pages
Edition 1st Edition
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Author (1):
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Dmitry Galkin Dmitry Galkin
Author Profile Icon Dmitry Galkin
Dmitry Galkin
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Table of Contents (22) Chapters Close

Preface 1. Part 1: The Cloud Era
2. Chapter 1: From Cloud to Cloud Native and Kubernetes FREE CHAPTER 3. Chapter 2: Overview of CNCF and Kubernetes Certifications 4. Part 2: Performing Container Orchestration
5. Chapter 3: Getting Started with Containers 6. Chapter 4: Exploring Container Runtimes, Interfaces, and Service Meshes 7. Part 3: Learning Kubernetes Fundamentals
8. Chapter 5: Orchestrating Containers with Kubernetes 9. Chapter 6: Deploying and Scaling Applications with Kubernetes 10. Chapter 7: Application Placement and Debugging with Kubernetes 11. Chapter 8: Following Kubernetes Best Practices 12. Part 4: Exploring Cloud Native
13. Chapter 9: Understanding Cloud Native Architectures 14. Chapter 10: Implementing Telemetry and Observability in the Cloud 15. Chapter 11: Automating Cloud Native Application Delivery 16. Part 5: KCNA Exam and Next Steps
17. Chapter 12: Practicing for the KCNA Exam with Mock Papers 18. Chapter 13: The Road Ahead 19. Assessments 20. Index 21. Other Books You May Enjoy

Introducing Docker

Docker has been around for quite a few years, so you may have heard about it before. For many people, the name Docker itself is synonymous with container. However, there are so many things called Docker that it is easy to get confused:

  • Docker Inc.
  • Docker Engine
  • dockerd (Docker daemon)
  • Docker CLI
  • Docker Hub
  • Docker Registry
  • Docker Swarm
  • Docker Compose
  • Docker Desktop
  • Dockershim

Let’s clarify each one.

For starters, Docker Inc. (as a company) did not invent the technology behind containers, but it created easy-to-use tools from the list that helped kickstart broader container adoption. The company was founded in 2008 and was initially called dotCloud.

Docker Engine is an open source software bundle for building and containerizing applications. It is a piece of client-server software that consists of a daemon service known as dockerd (Docker daemon) that provides a REST API (for other programs to talk to...

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