Book Image

Getting Started with Containerization

By : Dr. Gabriel N. Schenker, Hideto Saito, Hui-Chuan Chloe Lee, Ke-Jou Carol Hsu
Book Image

Getting Started with Containerization

By: Dr. Gabriel N. Schenker, Hideto Saito, Hui-Chuan Chloe Lee, Ke-Jou Carol Hsu

Overview of this book

Kubernetes is an open source orchestration platform for managing containers in a cluster environment. This Learning Path introduces you to the world of containerization, in addition to providing you with an overview of Docker fundamentals. As you progress, you will be able to understand how Kubernetes works with containers. Starting with creating Kubernetes clusters and running applications with proper authentication and authorization, you'll learn how to create high-availability Kubernetes clusters on Amazon Web Services (AWS), and also learn how to use kubeconfig to manage different clusters. Whether it is learning about Docker containers and Docker Compose, or building a continuous delivery pipeline for your application, this Learning Path will equip you with all the right tools and techniques to get started with containerization. By the end of this Learning Path, you will have gained hands-on experience of working with Docker containers and orchestrators, including SwarmKit and Kubernetes. This Learning Path includes content from the following Packt products: • Kubernetes Cookbook - Second Edition by Hideto Saito, Hui-Chuan Chloe Lee, and Ke-Jou Carol Hsu • Learn Docker - Fundamentals of Docker 18.x by Gabriel N. Schenker
Table of Contents (25 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
Index

Creating a Docker Swarm


Creating a Docker Swarm is almost trivial. It is so easy that it seems unreal if one knows what an orchestrator is all about. But it is true, Docker has done a fantastic job in making swarms simple and elegant to use. At the same time, Docker Swarm has been proven in use by large enterprises to be very robust and scalable.

Creating a local single node swarm

So, enough fancying, let's demonstrate how one can create a swarm. In its most simple form, a fully functioning Docker Swarm consists only of a single node. If you're using Docker for Mac or Windows, or even if you're using Docker Toolbox, then your personal computer or laptop is such a node. Thus, we can start right there and demonstrate some of the most important features of a swarm.

Let's initialize a swarm. On the command-line, just enter the following command:

$ docker swarm init

And after an incredibly short time you should see something like the following screenshot:

Output of the docker swarm init command

Our...