Learn Docker - Fundamentals of Docker 19.x - Second Edition

Creating a local single node swarm

So, enough imagining — let's demonstrate how we 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. Hence, 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 ...