Cannot reach default Django application using Gunicorn on AWS EC2 instance

I struggled with this problem for two days without success. I created an instance of the default Django application (1.6.1) called "testdj", installed it on an Amazon AWS EC2 t1.micro instance with Ubuntu Server 13.10 running, and I am trying to achieve standard Django. "He works!" through Gunicorn (v. 18). When I start firing from the command line:

gunicorn testdj.wsgi:application --bind [ec2-public-dns]:8001

I can see the page when I enter this url:

http://[ec2-public-dns]:8001

However, if I use the "start-gunicorn" bash script that I created after reading the Karzynski blogpost "Configuring Django with Nginx, Gunicorn, virtualenv, supervisor and PostgreSQL", I always get an error. When I enter this URL ...

http://[ec2-public-dns]

... I get this error:

Error 502 - Bad Request
The server could not resolve your request for uri: http://[ec2-public-dns]

Here is the gun launcher script:

#!/bin/bash

NAME="testdj"
DJANGODIR=/usr/share/nginx/html/testdj
SOCKFILE=/usr/share/nginx/html/testdj/run/gunicorn.sock
USER=testdj
GROUP=testdj
NUM_WORKERS=3
DJANGO_SETTINGS_MODULE=testdj.settings
DJANGO_WSGI_MODULE=testdj.wsgi

WORKON_HOME=/home/testdj/venv
source `which virtualenvwrapper.sh`
workon $NAME
export DJANGO_SETTINGS_MODULE=$DJANGO_SETTINGS_MODULE
export PYTHONPATH=$DJANGO_DIR:$PYTHONPATH

RUNDIR=$(dirname $SOCKFILE)
test -d $RUNDIR || mkdir -p $RUNDIR

exec gunicorn ${DJANGO_WSGI_MODULE}:application \
  --name $NAME \
  --workers $NUM_WORKERS \
  --user=$USER --group=$GROUP \
  --access-logfile /tmp/gunicorn-access.log \
  --error-logfile /tmp/gunicorn-error.log \
  --log-level=debug \
  --bind=unix:$SOCKFILE

, "testdj" . Django . Django wsgi.py. nginx , nginx Django nginx/usr/share/nginx/html. / www-data /usr/share/nginx , , / "testdj" /usr/share/nginx/html/testdj . /usr/share/nginx/html/testdj, perms 775, www- testdj.

nginx, nginx. nginx, , .

upstream testdj_app_server {
    server unix:/usr/share/nginx/html/testdj/run/gunicorn.sock fail_timeout=0;
}
server {
    listen 80;
    server_name ec2-[my-public-dns-ip].us-west-2.compute.amazonaws.com;
    client_max_body_size 4G;
    access_log /var/log/nginx/testdj-access.log;
    error_log /var/log/nginx/testdj-error.log;

    location /static/ {
        alias /usr/share/nginx/html/testdj/static/;
    }
    location /media/ {
        alias /usr/share/nginx/html/testdj/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) {
            # This must match "upstream" directive above
            proxy_pass http://testdj_app_server;
            break;
        }
    }
    error_page 500 502 503 504 /500.html;
    location = /500.html {
        root /usr/share/nginx/html/testdj/static/;
    }
}

, , , , "-bind = unix: $SOCKFILE" script "--bind - [ec2-public-dns]: 8000", Django. , DNS- 8000, 80 nginx -.

AWS, HTTP 80, 8000 8001 , , 502 .

, , , - . Django , :

2014-02-03 18:41:01 [19023] [INFO] Starting gunicorn 18.0
2014-02-03 18:41:01 [19023] [DEBUG] Arbiter booted
2014-02-03 18:41:01 [19023] [INFO] Listening at: unix:/usr/share/nginx/html/testdj/run/gunicorn.sock (19023)
2014-02-03 18:41:01 [19023] [INFO] Using worker: sync
2014-02-03 18:41:01 [19068] [INFO] Booting worker with pid: 19068
2014-02-03 18:41:01 [19069] [INFO] Booting worker with pid: 19069
2014-02-03 18:41:01 [19070] [INFO] Booting worker with pid: 19070

- , ? , . , , , " ". , , . , , . !