With Docker 1.12, the docker team introduce Docker Swarm mode and has continued to enhance it in current releases. It simplified creating a clustered, robust Docker environment for running a set of Docker containers across several machines (virtual or otherwise) similar to what docker-compose did for a single machine. Unfortunately since this is so new, understanding how to set up a swarm and take advantage of it is still like black magic.
In this talk we will walk through using Vagrant and Ansible to stand up a reference swarm and some associated infrastructure and talk about some of the strategies used to make this reproducible in other environments. We will then deploy some services (containers) into our swarm and review the different options to enable keeping our services and the swarm healthy, current and available. [179]


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