MRTG : Install

MRTG : Install 2015/06/16

	Install MRTG (Multi Router Traffic Grapher) to see network traffic data on the web.
[1]	Install Apache HTTP Server, refer to here.
[2]	Install MRTG, SNMP.

[root@dlp ~]#  yum -y install net-snmp net-snmp-utils mrtg

[3]	Configure SNMP (Simple Network Management Protocol).

[root@dlp ~]#  vi /etc/snmp/snmpd.conf # line 41: comment out # com2sec notConfigUser   default       public # line 74,75: uncomment and change # change to your local network for "mynetwork" section # change comunity name except public or private com2sec local  localhost Serverworld com2sec mynetwork  10.0.0.0/24 Serverworld # line 78,79: uncomment and change group MyRWGroup  v2c      local group MyROGroup  v2c      mynetwork # line 85: uncomment view all included .1 80 # line 93,94: uncomment and change access MyROGroup ""  v2c    noauth    exact    all   none   none access MyRWGroup ""  v2c    noauth    exact    all   all      all [root@dlp ~]#  systemctl start snmpd  [root@dlp ~]#  systemctl enable snmpd # show status (replace the "Serverworld" to your comunity name) [root@dlp ~]#  snmpwalk -v2c -c Serverworld localhost system  SNMPv2-MIB::sysDescr.0 = STRING: Linux dlp.srv.world 3.10.0-229.4.2.el7.x86_64 #1 SMP Wed May..... SNMPv2-MIB::sysObjectID.0 = OID: NET-SNMP-MIB::netSnmpAgentOIDs.10 DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (91954) 0:15:19.54 SNMPv2-MIB::sysContact.0 = STRING: Root <root@localhost> (configure /etc/snmp ..... ..... SNMPv2-MIB::sysORUpTime.9 = Timeticks: (4) 0:00:00.04 SNMPv2-MIB::sysORUpTime.10 = Timeticks: (4) 0:00:00.04

[4]	Configure MRTG.

[root@dlp ~]#  cfgmaker --snmp-options=:::::2 --ifref=descr --ifdesc=descr Serverworld@10.0.0.30 > /etc/mrtg/mrtg.cfg  [root@dlp ~]#  vi /etc/mrtg/mrtg.cfg # line 8: add WorkDir: /var/www/mrtg # line 16: uncomment Options[_]: growright, bits # near line 75: uncomment all from the line & change MaxBytes value Target[10.0.0.30_eth0]: \eth0:Serverworld@10.0.0.30:::::2 noHC[10.0.0.30_eth0]: yes SetEnv[10.0.0.30_eth0]: MRTG_INT_IP="10.0.0.30" MRTG_INT_DESCR="eth0" MaxBytes[10.0.0.30_eth0]:  125000000 Title[10.0.0.30_eth0]: eth0 -- dlp.srv.world PageTop[10.0.0.30_eth0]: <h1>eth0 -- dlp.srv.world</h1> ..... ..... # execute mrtg 3 times (display warnings until 3 times) [root@dlp ~]#  for (( i=1 ; i <= 3 ; i++ )); do env LANG=C mrtg /etc/mrtg/mrtg.cfg; done  2015-06-16 19:54:12, Rateup WARNING: /usr/bin/rateup could not read the primary log file for 10.0.0.30_eth0 2015-06-16 19:54:12, Rateup WARNING: /usr/bin/rateup The backup log file for 10.0.0.30_eth0 was invalid as well 2015-06-16 19:54:12, Rateup WARNING: /usr/bin/rateup Can't rename 10.0.0.30_eth0.log to 10.0.0.30_eth0.old updating log file # generate index file [root@dlp ~]#  indexmaker --columns=1 /etc/mrtg/mrtg.cfg > /var/www/mrtg/index.html # add in Cron [root@dlp ~]#  vi /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

[5]	Configure httpd to access MRTG site from other hosts.

[root@dlp ~]#  vi /etc/httpd/conf.d/mrtg.conf # line 10: uncomment and add access permission, line 11: add DirectoryIndex Require ip  10.0.0.0/24  DirectoryIndex index.html [root@dlp ~]#  systemctl start httpd

[6]	Access to the "http://(MRTG hostname or IP address)/mrtg/" from a client with HTTP, then it's possible to see MRTG site.