On CoreOS the integration is buggy. One cannot start a long running process from sshd as when one logs out, all processes started from sshd are killed. One can

On CoreOS the integration is buggy. One cannot start a long running process from sshd as when one logs out, all processes started from sshd are killed. One can workaround that using systemd-run utility to start long-running operation, but that is a privileged operation. Besides, it violates one of the premises of socket activation that it should be completely transparent.