Ubuntu 20+ + Flask + Gunicorn + Supervisor + Nginx

run.sh in project folder

#!/bin/bash -e

if [ -f .venv/bin/activate ]; then

  echo "Load Python virtualenv from '.venv/bin/activate'"

  source .venv/bin/activate

fi

exec "$@"

supervisord -n

$ /usr/bin/supervisord -n -c /etc/supervisor/supervisord.conf

/opt/sip-api/run.sh gunicorn -c /etc/gunicorn.conf.py sample:app

gunicorn.conf.py below

import os

import multiprocessing

_ROOT = os.path.abspath(os.path.join(

  os.path.dirname(__file__), '..'))

_VAR = os.path.join(_ROOT, 'var')

_ETC = os.path.join(_ROOT, 'etc')

loglevel = 'info'

# errorlog = os.path.join(_VAR, 'log/api-error.log')

# accesslog = os.path.join(_VAR, 'log/api-access.log')

errorlog = "-"

accesslog = "-"

# bind = 'unix:%s' % os.path.join(_VAR, 'run/gunicorn.sock')

bind = '0.0.0.0:5500'

# workers = 3

workers = multiprocessing.cpu_count() * 2 + 1

timeout = 3 * 60 # 3 minutes

keepalive = 24 * 60 * 60 # 1 day

capture_output = True

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Supervisor has two files.

https://github.com/ERPGulf/docs/blob/main/frappe-bench.conf

https://github.com/ERPGulf/docs/blob/main/xxx.ini

It's very important to have all the folders mentioned in supervisor configuration files exists and proper permission granted.  Otherwise you will hit wil either service hang or get error "supervisor Error: Cannot open an HTTP server: socket.error reported errno.ENOENT "

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