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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

In this chapter, we’ve learned about Cloud Native architectures, applications, and their features. Not every application that runs in the cloud automatically becomes Cloud Native. In fact, Cloud Native principles can be successfully applied also on-premises and not just in the cloud. We’ve briefly discussed the benefits of Cloud Native and in-depth about two core features—resiliency and autoscaling. While Cloud Native applications do not strictly require Kubernetes to run them, K8s makes things much easier with its self-healing capabilities and multiple autoscaling mechanisms: HPA, VPA, and Cluster Autoscaler.

Next, we covered Serverless or FaaS—a newer, event-driven computing model that comes with autoscaling and requires almost no operations at all. With Serverless, we are not responsible for any OS, security patching, or server life cycle. Serverless is also billed based on the actual usage calculated by the number of actual function invocations...

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