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CentOS 7 : MRTG : Install : Server World
mrtg Server : 192.168.1.10
1. 安裝 mrtg
# yum install net-snmp net-snmp-utils mrtg
2. 設定 snmp
# echo ‘rocommunity public’ > /etc/snmp/snmpd.conf
# systemctl enable snmpd.service
# systemctl start snmpd.service[@more@]
3. 防火牆設定
# firewall-cmd –add-rich-rule=”rule family=”ipv4″ source address=”192.168.1.0/24″ service name=”snmpd” accept” –permanent
或
# iptables -A INPUT -p udp -s 192.168.1.0/24 -m state –state NEW –dport 161 -j ACCEPT
4. 測試
# /bin/snmpwalk -v2c -c public 127.0.0.1
5. 建立 mrtg /etc/mrtg/mrtg.cfg 設定檔
# /bin/cfgmaker –snmp-options=:::::2 –ifref=descr –ifdesc=descr 192.168.1.10 > /etc/mrtg/mrtg.cfg
6. 修改 mrtg 設定檔 /etc/mrtg/mrtg.cfg
# cp /etc/mrtg/mrtg.cfg /etc/mrtg/mrtg.cfg.$(date +%F)
# vim /etc/mrtg/mrtg.cfg
### Global Config Options
# for UNIX
# WorkDir: /home/http/mrtg
WorkDir: /var/www/mrtg
### Global Defaults
# to get bits instead of bytes and graphs growing to the right
Options[_]: growright, bits
7. 執行三次，不用理會警告，因為一剛開始沒有資料，所以會出現，再執行一次就會沒有
# for (( i=1 ; i <= 3 ; i++ )); do env LANG=C mrtg /etc/mrtg/mrtg.cfg; done
2017-03-11 11:57:18, Rateup WARNING: /usr/bin/rateup could not read the primary log file for 192.168.1.10_eth0
2017-03-11 11:57:18, Rateup WARNING: /usr/bin/rateup The backup log file for 192.168.1.10_eth0 was invalid as well
2017-03-11 11:57:18, Rateup WARNING: /usr/bin/rateup Can’t rename 192.168.1.10_eth0.log to 192.168.1.10_eth0.old updating log file
8. 產生 index 檔
# /bin/indexmaker –columns=1 /etc/mrtg/mrtg.cfg > /var/www/mrtg/index.html
9. 建立 mrtg cron
# vim /etc/cron.d/mrtg
*/5 * * * * root LANG=C LC_ALL=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg –lock-file /var/lock/mrtg/mrtg_l –confcache-file /var/lib/mrtg/mrtg.ok
10. 修改 /etc/httpd/conf.d/mrtg.conf
# vim /etc/httpd/conf.d/mrtg.conf
Alias /mrtg /var/www/mrtg
<Location /mrtg>
Require local
Require ip 192.168.1.0/24
# Require ip 10.1.2.3
# Require host example.org
</Location>
11. 重新啟動 Web Server
# systemctl restart httpd.service
12. 觀看成果 http://Server’IP/mrtg