How to Install MRTG On Centos/RHEL 6

Install MRTG On Centos/RHEL 6

Install MRTG (Multi Router Traffic Grapher) to see network traffic data on the web

Step 1:Install Apache HTTP Server

# yum -y install httpd httpd-devel

Step 2:Install MRTG, SNMP

# yum -y install net-snmp net-snmp-utils mrtg

Step 3: Configure SNMP (Simple Network Management Protocol)

# 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 localhostServerworld
com2sec mynetwork 10.0.0.0/24Serverworld

# line 78,79: uncomment
group MyRWGroup any local
group MyROGroup any mynetwork

# line 85: uncomment
view all included .1 80

# line 93,94: uncomment
access MyROGroup "" any noauth 0 all none none
access MyRWGroup "" any noauth 0 all all all

--- save and quit (:wq) ---

Then start the snmp service:

# service snmpd start
# chkconfig snmpd on

## show status (replace the "Serverworld" to your comunity name)

# snmpwalk -v2c -c Serverworld localhost system

SNMPv2-MIB::sysDescr.0 = STRING: Linux dlp.server.world 2.6.32-504.3.3.el6.x86_64 #1 SMP
Wed Dec 17 01:55:02 UTC 2014 x86_64
SNMPv2-MIB::sysObjectID.0 = OID: NET-SNMP-MIB::netSnmpAgentOIDs.10
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (168142) 0:28:01.42
...
...
SNMPv2-MIB::sysORUpTime.7 = Timeticks: (4) 0:00:00.04
SNMPv2-MIB::sysORUpTime.8 = Timeticks: (4) 0:00:00.04

Step 4: Configure MRTG

# cfgmaker --ifref=descr --ifdesc=descr Serverworld@10.0.0.30 > /etc/mrtg/mrtg.cfg
# vi /etc/mrtg/mrtg.cfg

# line 9: add
WorkDir: /var/www/mrtg

# line 16: uncomment
Options[_]: growright, bits

# near line 73: make sure lines like follows are uncommented (change ip as your and

'Serverworld' as your community name)

Target[10.0.0.30_eth0]: \eth0:Serverworld@192.168.100.156:
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.server.world
PageTop[10.0.0.30_eth0]: <h1>eth0 -- dlp.server.world</h1>

## execute mrtg 3 times (display warnings until 3 times)

# for (( i=1 ; i <= 3 ; i++ )); do env LANG=C mrtg /etc/mrtg/mrtg.cfg; done

2015-01-25 21:33:23, Rateup WARNING: /usr/bin/rateup could not read the primary log file for

10.0.0.30_eth0
2015-01-25 21:33:23, Rateup WARNING: /usr/bin/rateup The backup log file for 10.0.0.30_eth0

was invalid as well
2015-01-25 21:33:23, Rateup WARNING: /usr/bin/rateup Can't remove 10.0.0.30_eth0.old updating

log file
2015-01-25 21:33:23, Rateup WARNING: /usr/bin/rateup Can't rename 10.0.0.30_eth0.log to

10.0.0.30_eth0.old updating log file
2015-01-25 21:33:23, Rateup WARNING: /usr/bin/rateup Can't remove 10.0.0.30_eth0.old updating

log file

## generate index file

# indexmaker --columns=1 /etc/mrtg/mrtg.cfg > /var/www/mrtg/index.html

# updating is done automatically by cron

# cat /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

Step 5: Configure httpd to access MRTG

# vi /etc/httpd/conf.d/mrtg.conf

# line 11: add IP address you allow to access
Allow from 127.0.0.1 10.0.0.0/24

##restart httpd:

# /etc/rc.d/init.d/httpd restart
or
# service httpd restart

Step 6: Access to the MRTG Panel from a client with HTTP

http://(MRTG hostname or IP address)/mrtg/

then it's possible to see MRTG site.

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