use python flask on a different port

Hello everyone

---

I am trying to run a flask app on port 8080. What I have done is the following

1. created a nginx vhost domain, through option 2
2. followed this guide to set up everything needed for the application
3. Opened port 8080 on csf

I added a listen directive to port 8080 on the extra server block I created in the /usr/local/nginx/conf/conf.d/mydomainname.com.conf as you can see in the following snippet

Code:

server {
    listen 8080;
    server_name mydomainname.com;

    location / {
        include uwsgi_params;
        uwsgi_pass unix:/home/user/myproject/myproject.sock;
    }
}

so the entire file becomes

Code:

# redirect from non-www to www
# uncomment, save file and restart Nginx to enable
# if unsure use return 302 before using return 301
#server {
#            listen   80;
#            server_name mydomainname.com;
#            return 301 $scheme://www.mydomainname.com$request_uri;
#       }


server {
    listen 8080;
    server_name mydomainname.com;

    location / {
        include uwsgi_params;
        uwsgi_pass unix:/home/user/myproject/myproject.sock;
    }
}



server {
 
  server_name mydomainname.com;


  #add_header X-Frame-Options SAMEORIGIN;
  add_header X-Xss-Protection "1; mode=block" always;
  add_header X-Content-Type-Options "nosniff" always;
  #add_header Referrer-Policy "strict-origin-when-cross-origin";

  # limit_conn limit_per_ip 16;
  # ssi  on;

  access_log /home/nginx/domains/mydomainname.com/log/access.log combined buffer=256k flush=5m;
  error_log /home/nginx/domains/mydomainname.com/log/error.log;

  include /usr/local/nginx/conf/autoprotect/mydomainname.com/autoprotect-mydomainname.com.conf;
  root /home/nginx/domains/mydomainname.com/public;
  include /usr/local/nginx/conf/503include-main.conf;

  location / {
  include /usr/local/nginx/conf/503include-only.conf;
  include /usr/local/nginx/conf/block.conf;

  # Enables directory listings when index file not found
  autoindex  on;
  }

 
  include /usr/local/nginx/conf/staticfiles.conf;
  include /usr/local/nginx/conf/php.conf;
 
  include /usr/local/nginx/conf/drop.conf;
  #include /usr/local/nginx/conf/errorpage.conf;
  include /usr/local/nginx/conf/vts_server.conf;
}

the result is I get "502 Bad Gateway", any ideas what I am doing wrong?

 

any ideas at all?

 

No i can not access it.
Please note that I have set up a Systemd Unit File as described here for the process to autostart.
But it does not start even when I start it manually. The error I receive is the following

Code:

python mainform.py
 * Serving Flask app "mainform" (lazy loading)
 * Environment: production
   WARNING: Do not use the development server in a production environment.
   Use a production WSGI server instead.
 * Debug mode: off
Traceback (most recent call last):
  File "mainform.py", line 43, in <module>
    app.run(host='0.0.0.0')
  File "/usr/lib64/python2.7/site-packages/flask/app.py", line 943, in run
    run_simple(host, port, self, **options)
  File "/usr/lib/python2.7/site-packages/werkzeug/serving.py", line 814, in run_simple
    inner()
  File "/usr/lib/python2.7/site-packages/werkzeug/serving.py", line 774, in inner
    fd=fd)
  File "/usr/lib/python2.7/site-packages/werkzeug/serving.py", line 660, in make_server
    passthrough_errors, ssl_context, fd=fd)
  File "/usr/lib/python2.7/site-packages/werkzeug/serving.py", line 577, in __init__
    self.address_family), handler)
  File "/usr/lib64/python2.7/SocketServer.py", line 419, in __init__
    self.server_bind()
  File "/usr/lib64/python2.7/BaseHTTPServer.py", line 108, in server_bind
    SocketServer.TCPServer.server_bind(self)
  File "/usr/lib64/python2.7/SocketServer.py", line 430, in server_bind
    self.socket.bind(self.server_address)
  File "/usr/lib64/python2.7/socket.py", line 224, in meth
    return getattr(self._sock,name)(*args)
socket.error: [Errno 98] Address already in use

 

indeed i need someone with sysadmin knowledge but I am trying to do it myself.

thank you for your tip, I solved the problem using the proxy_pass directive