upstream xx{

             #ip_hash;

             server 127.0.0.1:1008;

         }

    server {

        listen       80;

        server_name  xx.xxx.com;

        location / {

             proxy_set_header Host $host;

             proxy_set_header X-Real-IP $remote_addr;

        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

             proxy_buffering off;

             proxy_pass http://xx;     

        }

    }

upstream xx1{

             #ip_hash;

             server 127.0.0.1:1009;

         }

    server {

        listen       80;

        server_name  xx1.xxx.com;

        location / {

             proxy_set_header Host $host;

             proxy_set_header X-Real-IP $remote_addr;

        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

             proxy_buffering off;

             proxy_pass http://xx1;     

        }

    }

upstream xx2{

             #ip_hash;

             server 127.0.0.1:1010;

         }

    server {

        listen       80;

        server_name  xx2.xxx.com;

        location / {

             proxy_set_header Host $host;

             proxy_set_header X-Real-IP $remote_addr;

        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

             proxy_buffering off;

             proxy_pass http://xx2;     

        }

    }

upstream xx3{

             #ip_hash;

             server 127.0.0.1:10080;

         }

    server {

        listen       80;

        server_name xx3.xxx.com;

        location / {

             proxy_set_header Host $host;

             proxy_set_header X-Real-IP $remote_addr;

        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

             proxy_buffering off;

             proxy_pass http://xx3;     

        }

    }