Here is my unit file for ookla speedtest service:
# /etc/systemd/system/speedtest.service
[Unit]
After=network.target
[Service]
User=ookla-user
Group=nogroup
WorkingDirectory=/opt/ooklaserver/
Type=simple
KillMode=mixed
ExecStart=/opt/ooklaserver/OoklaServer
TimeoutStartSec=30
TimeoutStopSec=60
Restart=always
[Install]
WantedBy=multi-user.target
Save it into the /etc/systemd/system/speedtest.service file. Then run systemctl daemon-reload and systemctl enable speedtest.service
