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

Product type Paperback

Published in Feb 2023

Publisher Packt

ISBN-13 9781804613399

Length 306 pages

Edition 1st Edition

Tools

Kubernetes

Concepts

Cloud Native

Author (1):

Dmitry Galkin

View More author details

Table of Contents (22) Chapters

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

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Kubernetes architecture

As you already know, Kubernetes is used to orchestrate fleets of containers that run on multiple servers that make up a Kubernetes cluster. Those servers are often called nodes, and nodes can be virtual machines running on-premises, in the cloud, or bare-metal servers. You can even combine different nodes in one Kubernetes cluster (for example, several nodes represented by VMs plus a few others as bare-metal servers).

There are two distinguished node types in Kubernetes:

Control plane nodes (sometimes also called master nodes)
Worker nodes

It is the worker nodes where the containerized applications run, and it is the control plane nodes where the K8s cluster management components run. We can see this in more detail in Figure 5.1.