gunicorn_start.bash

#!/bin/bash

NAME="hello_app"                                  # Name of the application
DJANGODIR=/opt/venv/retwiends             # Django project directory
SOCKFILE=/opt/venv/run/gunicorn.sock  # we will communicte using this unix socket
USER=root                                       # the user to run as
GROUP=root                                      # the group to run as
NUM_WORKERS=3                                     # how many worker processes should Gunicorn spawn
DJANGO_SETTINGS_MODULE=retwiends.settings             # which settings file should Django use
DJANGO_WSGI_MODULE=retwiends.wsgi                     # WSGI module name

echo "Starting $NAME"

# Activate the virtual environment
cd $DJANGODIR
source ../bin/activate
export DJANGO_SETTINGS_MODULE=$DJANGO_SETTINGS_MODULE
export PYTHONPATH=$DJANGODIR:$PYTHONPATH

# Create the run directory if it doesn't exist
RUNDIR=$(dirname $SOCKFILE)
test -d $RUNDIR || mkdir -p $RUNDIR

# Start your Django Unicorn
# Programs meant to be run under supervisor should not daemonize themselves (do not use --daemon)
exec ../bin/gunicorn ${DJANGO_WSGI_MODULE}:application \
  --name $NAME \
  --workers $NUM_WORKERS \
  --user=$USER --group=$GROUP \
  --log-level=debug \
  --bind=unix:$SOCKFILE

hello.conf

[program:hello]
command = /opt/venv/bin/gunicorn_start                    ; Command to start app
user = root                                                         ; User to run as
stdout_logfile = /opt/venv/logs/gunicorn_supervisor.log   ; Where to write log messages
redirect_stderr = true                                                ; Save stderr in the same log

hello.nginxconf

upstream hello_app_server {
  # fail_timeout=0 means we always retry an upstream even if it failed
  # to return a good HTTP response (in case the Unicorn master nukes a
  # single worker for timing out).

  server unix:/opt/venv/run/gunicorn.sock fail_timeout=0;
}

server {

    listen   80;
    server_name retwiends.com;

    client_max_body_size 4G;

    access_log /opt/venv/logs/nginx-access.log;
    error_log /opt/venv/logs/nginx-error.log;
 
    location /static/ {
        alias   /opt/venv/retwiends/retwiends/templates/static/;
    }
    
    location /media/ {
        alias   /opt/venv/retwiends/retwiends/templates/media/;
    }

    location / {
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_redirect off;
        if (!-f $request_filename) {
            proxy_pass http://hello_app_server;
            break;
        }
    }

    # Error pages
    error_page 500 502 503 504 /500.html;
    location = /500.html {
        root /opt/venv/retwiends/retwiends/templates/static/;
    }
}