Summary

In this chapter, we explored Docker Swarm. We took a look at how to install Docker Swarm and the Docker Swarm components that make up Docker Swarm. We took a look at how to use Docker Swarm, joining, listing, and managing Swarm manager and worker nodes. We reviewed the service and stack commands and how to use them, and spoke about the Swarm inbuilt ingress load balancer, overlay networks, and scheduler.

Now, Docker Swarm is in an interesting state at the time of writing, as Docker Swarm was one of the technologies acquired by Mirantis as part of the Docker Enterprise sale, and while Mirantis have said that they will offer support for existing Docker Swarm clusters for 2 years (that was in November 2019), they haven't given much information on the future of Docker Swarm.

This isn't surprising as Mirantis do a lot of work with another container cluster called Kubernetes, which we are going to be looking at in Chapter 11, Docker and Kubernetes. Before then, in...