Код:

    log_format main     '$remote_addr - $remote_user [$time_local] "$request" '
                        '$status $body_bytes_sent "$http_referer" '
                        '"$http_user_agent" "$http_x_forwarded_for"';

Код:

#виртуальный хост 
    server {
        listen       80;
        server_name example.ru;
        access_log   /var/log/nginx.access_log  main;

        charset windows-1251;
        client_max_body_size    4m;

        location / {
            root   /usr/local/www/example.ru;
            index  index.html index.php;
        }

    }