Book Image

Becoming KCNA Certified

By : Dmitry Galkin
Book Image

Becoming KCNA Certified

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)
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

Cloud Native best practices

As the world is changing fast, users get more and more demanding, and the IT landscape has to change in order to meet expectations. Today, not many people tolerate waiting for a web page to open if it takes 30 seconds and people complain if online banking is not working for a whole hour long.

Cloud Native has signified major improvements in the field by bringing a new approach to building and running applications. Cloud Native applications are designed to expect failures and automatically recover from most of them. A lot of focus is put on making both the application and the infrastructure resilient. This can be achieved in many ways with or without Kubernetes. If using Kubernetes, make sure to run multiple control plane and worker nodes spread across different failure domains such as your cloud provider availability zones (AZs). Always run at least two replicas (pods) of an application using a controller such as Deployment and make sure to spread them...