ok,now i've two vps and my wordpress was built-in A,now i wish to configure my domain pointed to B to ensure that i'm able to accesss my blog through B's ip.how you can configure B's nginx conf?

(i am certain my A's nginx configure file are designed for the domain's demands,it may be visited if my domain was pointed to some)

    server {
            listen          80;
            server_name      zhubo.me;
            charset utf-8;
            expires 300d;
            access_log /var/log/nginx/zhubo.me.access_log main;
            error_log /var/log/nginx/zhubo.me.error_log info;
            set $root_zhubo /mnt/fb/xcffs;
            location / {
                    proxy_pass        http://zhubo.me;
                    proxy_set_header  X-Real-IP  $110.75.189.186;
                    autoindex off;

            }

    }

this really is my configure file and also the real ip is 110.75.189.186 ,which vps to configure zhubo.me's domain.