Book Image

Certified Kubernetes Administrator (CKA) Exam Guide

By : Mélony Qin
4 (1)
Book Image

Certified Kubernetes Administrator (CKA) Exam Guide

4 (1)
By: Mélony Qin

Overview of this book

Kubernetes is the most popular container orchestration tool in the industry. The Kubernetes Administrator certification will help you establish your credibility and enable you to efficiently support the business growth of individual organizations with the help of this open source platform. The book begins by introducing you to Kubernetes architecture and the core concepts of Kubernetes. You'll then get to grips with the main Kubernetes API primitives, before diving into cluster installation, configuration, and management. Moving ahead, you’ll explore different approaches while maintaining the Kubernetes cluster, perform upgrades for the Kubernetes cluster, as well as backup and restore etcd. As you advance, you'll deploy and manage workloads on Kubernetes and work with storage for Kubernetes stateful workloads with the help of practical scenarios. You'll also delve into managing the security of Kubernetes applications and understand how different components in Kubernetes communicate with each other and with other applications. The concluding chapters will show you how to troubleshoot cluster- and application-level logging and monitoring, cluster components, and applications in Kubernetes. By the end of this Kubernetes book, you'll be fully prepared to pass the CKA exam and gain practical knowledge that can be applied in your day-to-day work.
Table of Contents (17 chapters)
1
Part 1: Cluster Architecture, Installation, and Configuration
5
Part 2: Managing Kubernetes
10
Part 3: Troubleshooting

Summary

This chapter covers one of the most common jobs of a Kubernetes administrator – that is, maintaining and upgrading Kubernetes clusters. Similar to cluster installation, this is also one of the most time-consuming tasks in the CKA exam. Again, practice makes perfect. The HA topology for a Kubernetes cluster in Chapter 2, Installing and Configuring Kubernetes Cluster, helps you understand what you are going to upgrade and how to do it. If needed, go back to Chapter 1, Kubernetes Overview, and make sure that you have a good understanding of the Kubernetes components. This way, you will know how and what’s needed to upgrade the control plane and worker nodes.

Compared to cluster upgrades, backup and restore etcd is one of the best-in-value questions in the CKA exam as it is simple to answer with a high-value score. Thoroughly practicing what we’ve learned in this chapter will help you overcome any challenges in the exam.

In the next chapter, we’...