Systemd and Gunicorn require a wsgi file of some sort as the last arg to ExecStart: http://docs.gunicorn.org/en/latest/deploy.html?highlight=ExecStart#systemd
With Django, this was in the main module as wsgi.py:
ExecStart=/home/admin/django/bin/gunicorn --config /home/admin/src/gunicorn.py --bind unix:/tmp/api.sock myapp.wsgi
But this file obviously doesn't exist when using Sanic and uvloop (I believe the new protocol is called ASGI). I tried substituting it for app.py which unsurprisingly didn't work:
ExecStart=/home/admin/sanic/bin/gunicorn --config /home/admin/src/gunicorn.py --bind unix:/tmp/api.sock myapp.app
How should this parameter be configured when using Sanic?
If you want to start sanic with systemd, why don't you used supervisrod: Supervisord.
Boot -> Systemd -> supervisord -> gunicorn -> sanic
[unix_http_server]
file=/tmp/supervisor.sock ; path to your socket file
[supervisord]
logfile=/var/log/supervisord/supervisord.log ; supervisord log file
logfile_maxbytes=50MB ; maximum size of logfile before rotation
logfile_backups=10 ; number of backed up logfiles
loglevel=error ; info, debug, warn, trace
pidfile=/var/run/supervisord.pid ; pidfile location
nodaemon=false ; run supervisord as a daemon
minfds=1024 ; number of startup file descriptors
minprocs=200 ; number of process descriptors
user=root ; default user
childlogdir=/var/log/supervisord/ ; where child log files will live
[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface
[supervisorctl]
serverurl=unix:///tmp/supervisor.sock ; use a unix:// URL for a unix socket
[program:ctrlapi]
directory=/home/ubuntu/api
command=/home/ubuntu/api/venv3/bin/gunicorn api:app --bind 0.0.0.0:8000 --worker-class sanic.worker.GunicornWorker -w 2
stderr_logfile = log/api_stderr.log
stdout_logfile = log/api_stdout.log