Systemd unit files to restart service every two hours.

two-hour.service

[Unit]
Description=Service that restarts my spread_goodness.service every two hours.

[Service]
Type=oneshot
ExecStart=/usr/bin/systemctl try-restart spread_goodness.service

two-hour.timer

[Unit]
Description=2hour timer

[Timer]
OnBootSec=0min
OnCalendar=0/2:00:00
Unit=two-hour.service

[Install]
WantedBy=basic.target

I'm currently trying to understand how timers work within systemd and this was very helpful and straight to the point. Thanks for sharing. ^^