In this topic, we will be looking at Docker's new offering, UCP. This product is not open sourced, so there is a licensing cost. You can get a trial license for 30 days (https://www.docker.com/products/docker-universal-control-plane), and that is what we will be using. Docker UCP takes out the complexity of managing all the moving parts of a scheduler. This could be a massive plus pending your use case. Docker UCP also brings with it a web UI for administration. So, if container schedulers seem daunting, this could be a perfect solution for you.
So, in this example, we are going to build three nodes. The first will be our UCP controller and the other two nodes will be UCP HA replicas that give the design some fault tolerance. As UCP is a wrapped product, I am not going to go into all the moving parts.
Refer to the following diagram to get a visualization of the main components:
