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Becoming KCNA Certified

Becoming KCNA Certified

By : Dmitry Galkin
5 (6)
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Becoming KCNA Certified

Becoming KCNA Certified

5 (6)
By: Dmitry Galkin

Overview of this book

The job market related to the cloud and cloud-native technologies is both growing and becoming increasingly competitive, making certifications like KCNA a great way to stand out from the crowd and learn about the latest advancements in cloud technologies. Becoming KCNA Certified doesn't just give you the practical skills needed to deploy and connect applications in Kubernetes, but it also prepares you to pass the Kubernetes and Cloud Native Associate (KCNA) exam on your first attempt. The book starts by introducing you to cloud-native computing, containers, and Kubernetes through practical examples, allowing you to test the theory out for yourself. You'll learn how to configure and provide storage for your Kubernetes-managed applications and explore the principles of modern cloud-native architecture and application delivery, giving you a well-rounded view of the subject. Once you've been through the theoretical and practical aspects of the book, you'll get the chance to test what you’ve learnt with two mock exams, with explanations of the answers, so you'll be well-prepared to appear for the KCNA exam. By the end of this Kubernetes book, you'll have everything you need to pass the KCNA exam and forge a career in Kubernetes and cloud-native computing.
Table of Contents (22 chapters)
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1
Part 1: The Cloud Era
4
Part 2: Performing Container Orchestration
7
Part 3: Learning Kubernetes Fundamentals
12
Part 4: Exploring Cloud Native
16
Part 5: KCNA Exam and Next Steps

Summary

With that, we’ve reached the end of the Kubernetes part – well done!

Remember – the more hands-on you get, the faster you’ll learn and understand Kubernetes and its concepts. If some points still feel a bit blurry, that is fine. You can always go back and read some parts again and check the Further reading sections at the end of each chapter. Refer to the official Kubernetes documentation at https://kubernetes.io/docs/home/ if you have any questions.

This chapter discussed which three types of network communication happen in a Kubernetes cluster and that by default, there is nothing restricting communication between two pods in the cluster. Therefore, it is a good idea to use network policies in order to only allow required communication and deny the rest for security reasons. Not all CNI providers support network policies, therefore make sure to check that when planning a Kubernetes installation.

Every new pod in the cluster automatically...

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