nginx_loadbalancer.conf

server {
    listen 80;
    server_name www.example.com;
    # serve static files
        location ~ ^/(img|images|javascript|js|css|flash|media|static)/ {
        root /var/www/www;
    #   expires 30d;

    }
    location / {
        proxy_pass http://foobar_balancer;
        proxy_set_header   Host             $http_host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header      X-Forwarded-For     $proxy_add_x_forwarded_for;
        proxy_redirect false;
    }



        gzip_min_length 1000;
        gzip_types text/html text/plain text/css text/javascript application/x-javascript text/xml;
}

    upstream foobar_balancer {
        server copycat1.example.com:8000;
        server copycat2.example.com:80;

    }