DirectAdmin论坛有个大神写了一个脚本update.script for DirectAdmin, 里面包括安装MRTG.
http://forum.directadmin.com/showthread.php?t=22587

mkdir /usr/local/updatescript
cd /usr/local/updatescript
wget --no-check-certificate https://www.wael.name/script/update.script
chmod 755 update.script

./update.script
./update.script MRTG

完成后输入你的http://ip/mrtg 查看

9l7QS0.md.jpg

# GNU GENERAL PUBLIC LICENSE
# Version 2, June 1991
# Copyright (C) 2006,2007 Free Software Foundation, Inc.
# 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
# Everyone is permitted to copy and distribute verbatim copies
# of this license document, but changing it is not allowed.
#
# Update script made by Wael Isa
# H188, R4008, Arad 240, Kingdom of Bahrain
# https://www.wael.name/
# Version: 1.8.4
# Release Date: 1/9/2006
# Update Date : 18/8/2017