Непонятки с nginx

server {
    listen       80;
    server_name  www.example.com example.com;
 location / {
 
        location /phpmyadmin/ {
                include hosts.conf;
                deny all;
       }

        proxy_pass http://10.100.100.1:80;

                proxy_set_header        Host $host;
                proxy_set_header        X-Forwarded-Host $host;
                proxy_set_header        X-Forwarded-Server $host;
                proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header        X-Real-IP  $remote_addr;
                client_max_body_size 100m;
    }


}

proxy_pass http://10.100.100.1:80;