running gunicorn bind command in Jenkins background

Question

I am trying to run a django app in background using gunicorn app.wsgi:application --bind=0.0.0.0:1312 --daemon. It's working on ubuntu terminal but not not if I try and run in jenkins. some 502 nginx error comes up:

(111: Connection refused) while connecting to upstream, client: 106.51.133.80, s
$.80, server: 0.0.0.0:1312, request: "GET / HTTP/1.1", upstream: "http://0.0.0.0:1312/", host: "0.0.0.0:81"

Answer 1

If you're getting a 502 error that means your back-end is not functioning properly. For jenkins these could be the reasons:

1. your back end may not be starting at boot time
2. Timeout may be occuring

For the first one try and run

sudo service --status-all

start the service by:

sudo service spawn-fcgi start

or

sudo /etc/init.d/spawn-fcgi start

Enable the service to start it on boot. google it

Other reason maybe a timeout error. Increase the buffer and timeout times

http {
...
fastcgi_buffers 8 16k;
fastcgi_buffer_size 32k;
fastcgi_connect_timeout 300;
fastcgi_send_timeout 300;
fastcgi_read_timeout 300;
...
}

Check these links for more info.

• https://www.scalescale.com/tips/nginx/502-bad-gateway-error-using-nginx/
• http://developernote.com/2012/09/how-i-fixed-nginx-502-bad-gateway-error/
• nginx 502 bad gateway after ubuntu server restart