Book Image

The Kubernetes Workshop

By : Zachary Arnold, Sahil Dua, Wei Huang, Faisal Masood, Mélony Qin, Mohammed Abu Taleb
Book Image

The Kubernetes Workshop

By: Zachary Arnold, Sahil Dua, Wei Huang, Faisal Masood, Mélony Qin, Mohammed Abu Taleb

Overview of this book

Thanks to its extensive support for managing hundreds of containers that run cloud-native applications, Kubernetes is the most popular open source container orchestration platform that makes cluster management easy. This workshop adopts a practical approach to get you acquainted with the Kubernetes environment and its applications. Starting with an introduction to the fundamentals of Kubernetes, you’ll install and set up your Kubernetes environment. You’ll understand how to write YAML files and deploy your first simple web application container using Pod. You’ll then assign human-friendly names to Pods, explore various Kubernetes entities and functions, and discover when to use them. As you work through the chapters, this Kubernetes book will show you how you can make full-scale use of Kubernetes by applying a variety of techniques for designing components and deploying clusters. You’ll also get to grips with security policies for limiting access to certain functions inside the cluster. Toward the end of the book, you’ll get a rundown of Kubernetes advanced features for building your own controller and upgrading to a Kubernetes cluster without downtime. By the end of this workshop, you’ll be able to manage containers and run cloud-based applications efficiently using Kubernetes.
Table of Contents (20 chapters)
Preface

Common kubectl Commands

As previously described, kubectl is a CLI tool that is used to communicate with the Kubernetes API server. kubectl has a lot of useful commands for working with Kubernetes. In this section, we're going to walk you through some commonly used kubectl commands and shortcuts that are used to manage Kubernetes objects.

Frequently Used kubectl Commands to Create, Manage, and Delete Kubernetes Objects

There are several simple kubectl commands that you will use almost all the time. In this section, we will take a look at some of the basic kubectl commands:

  • get <object>: You can use this command to get the list of the desired types of objects. Using all instead of specifying an object type will get the list of all kinds of objects. By default, this will get the list of specified object types in the default namespace. You can use the -n flag to get objects from a specific namespace; for example, kubectl get pod -n mynamespace.
  • describe &lt...