Nginx - log format - пример для Directadmin

# vi /etc/nginx/directadmin-settings.conf
#log_format main "$remote_addr - $remote_user [$time_local] userdomain host:$host - $bytes_sent";
log_format main '$remote_addr - $remote_user [$time_local] '
                      '"$request" $status $bytes_sent '
                      '"$http_referer" "$http_user_agent" "$gzip_ratio"';
access_log /var/log/nginx/access.log main;