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At DockerCon 2017 in Austin I gave a presentation of a Raspberry Pi cluster mixed with some UP boards. The audience really liked the visual effects of the Docker Swarm scaling a service up and down. So I show you some background details what you need to run that demo on your Raspberry Pi cluster as well. All the effort played off to build that cluster, to find out how to drive LED’s in swarm mode, to put it into my bag and go through customs on my flight from Germany to Austin, Texas. It reall...