How to configure ExecStart for Gunicorn without WS

Question

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?

Answer 1

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

Answer 2

I have not yet deployed this myself with Systend and gunicorn. But, the documentation seems pretty good on this.

In order to run Sanic application with Gunicorn, you need to use the special sanic.worker.GunicornWorker for Gunicorn worker-class argument:

gunicorn myapp:app --bind 0.0.0.0:1337 --worker-class sanic.worker.GunicornWorker

With this in mind, how about this:

ExecStart=/home/admin/sanic/bin/gunicorn --config /home/admin/src/gunicorn.py myapp:app --bind 0.0.0.0:1337 --worker-class sanic.worker.GunicornWorker

I think the big piece you are missing is the GunicornWorker worker class.