Nginx 502 Gateway Error: connect() to unix:/home/user/project/project.sock failed

Question

I've gotten this error before, and can't seem to figure out why this occurred.

Ultimately its throwing a 502 Bad Gateway error.

if I do a nginx -t, I get:

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

It appears my syntax in: /etc/nginx/sites-enabled looks good.

Here's the site in sites-enabled:

server {
    listen 80;
    server_name <my-server-name-ip-here>;

    error_log /home/user/project/nginx_error.error_log info;

    root /home/user/project/projenv;

    location / {
        include proxy_params;
        proxy_pass http://unix:/home/user/project/project.sock;
    }

}

Error Im getting:

connect() to unix:/home/user/project/project.sock failed

Here's my init script:

start on runlevel [2345]
stop on runlevel [!2345]

respawn          #respawn this on reboot
setuid user        #set as unix user 'jd' to run as
setgid www-data  #user used by nginx

env PATH=/home/user/project/projenv/bin
chdir /home/user/project
exec gunicorn --workers 3 --bind unix:project.sock -m 007 wsgi:app

any idea what I should fix?? Thank you!

Answer 1

I'd suggest that this is probably a permissions error. Check that the socket is readable and writable by both client and server.