Flask install 502 Bad Gateway nginx

Posted July 26, 2016 17.9k views
NginxGetting StartedPythonPython FrameworksUbuntu 16.04

I am beginner in python development and I first time tried to upload to server DigitalOcean. I followed this tutorial link. But I have a problem when I finished tutorial 502 Bad Gateway nginx/1.10.0 (Ubuntu)


module = wsgi:app

master = true

socket = zlty.sock
chmod-socket = 660
vacuum = true

die-on-term = true


Description=uWSGI instance to serve zlty

ExecStart=/home/dendis/zlty/zltyenv/bin/uwsgi --ini zlty.ini



server {
    listen 80;

    location / {
        include uwsgi_params;
        uwsgi_pass unix:/home/dendis/zlty/zlty.sock;

Log in nginx
2016/07/26 03:53:02 [crit] 9563#9563: *9 connect() to unix:/home/dendis/zlty/zlty.sock failed (2: No such file or directory) while connecting to upstream, client:, server:, request: "GET / HTTP/1.1", upstream: "uwsgi://unix:/home/dendis/zlty/zlty.sock:", host: ""

1 comment

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Submit an Answer
2 answers

When following this tutorial did you complete the section on creating and testing a sample application. This section included temporarily opening port 5000 and ensuring the app is returned. It sounds like the flask application itself is not responding when it is requested by nginx upstream so working from the bottom of the stack should be the best way to identify the issue.


   ``` uwsgi_pass unix:/home/jrm2k6/jeremydagorn-blog/jeremydagorn.sock;```


   ```uwsgi_pass unix:///home/jrm2k6/jeremydagorn-blog/jeremydagorn.sock;```

and restart Nginx. It might help you.

OR refer -