====== Systemd Service ======
  * https://github.com/torfsen/python-systemd-tutorial
  * https://stackoverflow.com/questions/35452591/start-request-repeated-too-quickly

===== Restart on failure =====

<code>
vario-x-controller:~# systemctl reset-failed --user dev-onboard
vario-x-controller:~# systemctl start --user dev-onboard
vario-x-controller:~# systemctl status --user dev-onboard
</code>