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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

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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