/etc/systemd/system/gunicorn.socket
[Unit]
Description=gunicorn socket
[Socket]
ListenStream=/run/gunicorn.sock
[Install]
WantedBy=sockets.target
/etc/systemd/system/gunicorn.service
[Unit]
Description=mi gunicorn
Requires=gunicorn.socket
After=network.target
[Service]
User=appuser
Group=www-data
WorkingDirectory=/path/to/app
ExecStart=/path/to/bin/gunicorn \
--access-logfile - \
--workers 3 \
--bind unix:/run/gunicorn.sock \
app.wsgi:application
[Install]
WantedBy=multi-user.target