Pictures from subdomains, how to set up nginx?

Question

Nginx

There is a server at domain.com in the nginx-apache bundle, there are two more servers with nginx on sub1.domain.com and sub2.domain.com. How to configure nginx to redirect to sub1.domain.com/images and sub2.domain.com/images in turn when accessing domain.com/images? I would be grateful for any advice.

Answer 1

Very simple.
1. In http {} create upstream

upstream images {
        least_conn;
        server server1;
        server server2;
    }

2. In server {} create location

location ~ \.(png|jpg|gif)$ {
    proxy_pass http://$images;
    proxy_redirect http://$images/ /;   
    proxy_intercept_errors on;
}