We're done. We have a system that will alert us whenever there's something wrong inside the cluster. The next step is to start alerting the system so that it can self-heal and leave our Slack channel only for emergencies that cannot be auto-fixed.
The next chapter will explore the options for alerting the system. For now, the time has come for both us and our laptops to take a rest.
docker-machine rm -f \ swarm-1 swarm-2 swarm-3