More concretely, cgroups-mount/umount and the corresponding upstart job aren't necessary at all under systemd. So the only thing to do here is to provide a no-op "placeholder" cgroup-lite.service to satisfy invoke-rc.d.
More concretely, cgroups- mount/umount and the corresponding upstart job aren't necessary at all under systemd. So the only thing to do here is to provide a no-op "placeholder" cgroup-lite.service to satisfy invoke-rc.d.