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

Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and so on. Here is an example: “Let’s delete the old nginx-deployment that we created at the beginning of this chapter.”

A block of code is set as follows:

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: kcna-pv-claim
spec:
  storageClassName: standard
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 3Gi

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

Normal   Scheduled  85s                default-scheduler   Successfully assigned kcna/liveness-exec to minikube
  Normal   Pulled     81s                kubelet            Successfully pulled image "k8s.gcr.io/busybox" in 3.4078911s
  Warning  Unhealthy  41s (x3 over 51s)  kubelet            Liveness probe failed: cat: can't open '/tmp/healthy': No such file or directory
  Normal   Killing    41s                kubelet            Container liveness failed liveness probe, will be restarted
  Normal   Pulling    11s (x2 over 85s)  kubelet            Pulling image "k8s.gcr.io/busybox"

Bold: Indicates a term, an important word, or words. For instance, major points can appear in bold.

Tips or important notes

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