Supervisor not working with Gunicorn + Flask

Question

I am trying to run Gunicorn from Supervisor in an Ubuntu 12.04 system. Gunicorn runs a Flask app (simple REST web service tested with Flask's embedded server). I have installed Gunicorn by clonning GIT repo, trying to avoid 'apt-get install' because it runs Gunicorn server when installs it. I do not want it running, it will be run by Supervisor only. So after install it, if I try: ``` cd /usr/local/bin gunicorn my_app:app -c /path/to/gu_config_file ``` Gunicorn works. Then I kill it. Note config file without extension, because with '.py' extension does not work for me. So I edit Supervisor's config file like: ``` [program:gunicorn] command=/usr/local/bin/gunicorn my_app:app -c /path/to/.gu_setup directory=/usr/local/bin/ autostart=true autorestart=true redirect_stderr=True ``` And update changes in Supervisor: ``` supervisorctl reread # gunicorn: changed supervisorctl update # gunicorn: stopped # gunicorn: updated process group ``` Detects changes in file and works for Gunicorn progra…

Accepted Answer

I don't see you setting the environment in your supervisor config file:

```
[program:gunicorn]
environment=PYTHONPATH=/usr/local/bin:/usr/local/lib/project
command=/usr/local/bin/gunicorn my_app:app -c /path/to/.gu_setup
...
```

If that doesn't work, try starting gunicorn in debug mode:

```
command=/usr/local/bin/gunicorn --debug --log-level debug my_app:app -c /path/to/.gu_setup
```

Or pass the path directly to gunicorn:

```
command=/usr/local/bin/gunicorn --pythonpath /usr/local/bin,/usr/local/lib/project my_app:app -c /path/to/.gu_setup
```

EDIT: gunicorn's `--pythonpath` is broken, you can only pass one directory:

```
command=/usr/local/bin/gunicorn --pythonpath /usr/local/lib/project my_app:app -c /path/to/.gu_setup
```

Supervisor not working with Gunicorn + Flask

Solution

Problem