gunicorn not starting on port 80 but starting on port 8000

Question

I am using gunicorn and trying to write the upstart script. I am testing the command in the command line and for port 80 it just gets errors

command

gunicorn --bind 0.0.0.0:80 --workers 3 myapp.wsgi:application

log

[2016-10-19 02:36:51 +0000] [12752] [INFO] Starting gunicorn 19.6.0
[2016-10-19 02:36:51 +0000] [12752] [ERROR] Retrying in 1 second.
[2016-10-19 02:36:52 +0000] [12752] [ERROR] Retrying in 1 second.
[2016-10-19 02:36:53 +0000] [12752] [ERROR] Retrying in 1 second.
[2016-10-19 02:36:54 +0000] [12752] [ERROR] Retrying in 1 second.
[2016-10-19 02:36:55 +0000] [12752] [ERROR] Retrying in 1 second.
[2016-10-19 02:36:56 +0000] [12752] [ERROR] Can't connect to ('0.0.0.0', 80)

any ideas why this is not working? Sometimes it works for port 8000.

Answer 1

You have to use 'sudo' command for this.

sudo gunicorn --bind 0.0.0.0:80 --workers 3 myapp.wsgi:application

Port 80 requires superuser privilege.

Answer 2

If you are on a unix-like environment, ports < 1024 (like 80) will require superuser privileges.

From the question: https://stackoverflow.com/a/16225928/6823310

Originally answered by:

https://stackoverflow.com/users/358328/uku-loskit

This is why port 8000 works and 80 do not.

Try running the command with sudo.

Otherwise check if that port is not already being used by another service.