Book Image

kubectl: Command-Line Kubernetes in a Nutshell

By : Rimantas Mocevicius
Book Image

kubectl: Command-Line Kubernetes in a Nutshell

By: Rimantas Mocevicius

Overview of this book

The kubectl command line tool lets you control Kubernetes clusters to manage nodes in the cluster and perform all types of Kubernetes operations. This introductory guide will get you up to speed with kubectl in no time. The book is divided into four parts, touching base on the installation and providing a general overview of kubectl in the first part. The second part introduces you to managing Kubernetes clusters and working with nodes. In the third part, you’ll be taken through the different ways in which you can manage Kubernetes applications, covering how to create, update, delete, view, and debug applications. The last part of the book focuses on various Kubernetes plugins and commands. You’ll get to grips with using Kustomize and discover Helm, a Kubernetes package manager. In addition to this, you’ll explore how you can use equivalent Docker commands in kubectl. By the end of this book, you’ll have learned how to install and update an application on Kubernetes, view its logs, and inspect clusters effectively.
Table of Contents (16 chapters)
1
Section 1: Getting Started with kubectl
3
Section 2: Kubernetes Cluster and Node Management
6
Section 3: Application Management
10
Section 4: Extending kubectl

Similar Docker commands in kubectl

The following is a list of the most useful Docker commands, followed by their equivalents in kubectl.

Getting information is done with the following commands:

  • docker info
  • kubectl cluster-info

Getting version information is done with the following commands:

  • docker version
  • kubectl version

Running a container and exposing its port is done with the following commands:

  • docker run -d --restart=always --name nginx -p 80:80 nginx
  • kubectl create deployment --image=nginx nginx
  • kubectl expose deployment nginx --port=80 --name=nginx

Getting container logs is done with the following commands:

  • docker logs --f <container name>
  • kubectl logs --f <pod name>

Executing into a running container/pod shell is done with the following commands:

  • docker exec –it <container name> /bin/bash
  • kubectl exec –it <pod name>

Getting a list of...