upstream server { } block

server {
        listen   198.211.104.30:80; ## listen for ipv4; this line is default and implied

        root /home/ziber/public_html/load.liber.in;
        index load.php;

        server_name load.liber.in;
        access_log /var/log/nginx/load.liber.in/access.log;
        error_log /var/log/nginx/load.liber.in/error.log;

        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;


        location / {
                # try_files $uri $uri/;
                proxy_pass http://nodes;
        }

        location ~ \.php$ {
                fastcgi_split_path_info ^(.+\.php)(/.+)$;
                fastcgi_pass unix:/var/run/php5-fpm.sock;
                fastcgi_index index.php;
                include fastcgi_params;
        }
}