Source: https://dcos.io/docs/1.8/administration/remove-agent/
Command "systemctl kill -s SIGUSR1 dcos-mesos-slave" does not work as how it is supposed to (deregister node and kill all tasks). It did kill all tasks when I ran the command and went off the grid for a few seconds. But immediately came back up healthy. What is the best way to deregister a node for ever from a cluster?