I have two servers (ServerA 192.168.1.10, ServerB 192,168.1.11) and DNS of test.mysite.com is pointing to ServerA

#in serverA i have this
upstream lb_units {
      server 192.168.1.10 weight=2 max_fails=3 fail_timeout=30s; # Reverse proxy to  BES1
      server 192.168.1.11 weight=2 max_fails=3 fail_timeout=30s; # Reverse proxy to  BES2
}
server {
 listen 80; # Listen on the external interface
 server_name  test.mysite.com; # The server name
 root   /var/www/test;
 index index.php;
 location / {
  proxy_pass         http://lb_units; # Load balance the URL location "/" to the upstream lb_units
 }
location ~ \.php$ {
        include /etc/nginx/fastcgi_params;
        fastcgi_pass  127.0.0.1:9000;
        fastcgi_index index.php;
        fastcgi_param  SCRIPT_FILENAME  /var/www/test/$fastcgi_script_name;
        }
}

and ServerB is apache and it has the following

<VirtualHost *:80>
        RewriteEngine on
        <Directory "/var/www/test">
                AllowOverride all
        </Directory>
        DocumentRoot "/var/www/test"
        ServerName test.mysite.com
</VirtualHost>

but whenever i try to browse test.mysite.com, it serves me from ServerA. also i tried to mark serverA and down server 192.168.1.10 down; in lb_units and still the same, serving me from serverA. any idea what i have done wrong??