Docker Swarm services and stacks

So far, we have looked at the following commands:

$ docker swarm <command>
$ docker node <command>

These two commands allow us to bootstrap and manage our Docker Swarm cluster from a collection of existing Docker hosts. The next two commands we are going to look at are as follows:

$ docker service <command>
$ docker stack <command>

The service and stack commands allow us to execute tasks that, in turn, launch, scale, and manage containers within our Swarm cluster.

Services

The service command is a way of launching containers that take advantage of the Swarm cluster. Let's look at launching a really basic single-container service on our Swarm cluster. To do this, run...