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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

K8s – the Swiss Army knife of container orchestration

We’ve mentioned a few times that Kubernetes is great for running cloud-native applications that consist of many microservices packaged in containers. But why exactly?

Kubernetes offers many features that enormously simplify the operation of large container fleets. We already know that it is possible to automatically scale the number of containers with Kubernetes or restart failing containers. What about the other features Kubernetes has to offer?

  • Automated rollouts and rollbacks: Allows you to deploy new versions and changes of your application (or its configuration) in a controlled way, monitoring the application’s health status and ensuring it is always running. K8s also allows you to roll back to the previous versions of the application, its image, or its configuration if something goes wrong.
  • Service discovery and load balancing: Allows different microservices in a cluster to easily find each...
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