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MRTG installation on Centos 7 , RHEL 7 , Fedora and Linux

Install  on CentOs , RHEL , Fedora and  

STEP 1 :  Click here to install EPEL Repository for CentOs 7 , RHEL 7 

STEP 2 :  Install Apache web server.

Here we are creating basis installation  of apache web server.

#yum -y install httpd

Start the apache web service.

#systemctl start httpd.service

Enable service on auto boot

#systemctl enable httpd.service

STEP 3 :  Install MRTG through YUM

Below command is for mrtg and snmp installation  utility and dependency .

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

STEP 4 : Configure SNMP 

For monitor network interface and other resources like CPU , memory , we should configure snmpd “/etc/snmp/snmpd.conf” .

STEP 5 : Edit the configuration file.

# vim /etc/snmp/snmpd.conf

Now make change as i have describe below.

(a) comment the line with hash on line number 41 like below.

# com2sec notConfigUser default public

(b) uncomment  the line number 74,75  ,remove NETWORK/24 and replace with your network.

Before changes    #com2sec local localhost COMMUNITY  #com2sec mynetwork NETWORK/24 COMMUNITY
After Changes   com2sec local localhost techtransit  com2sec mynetwork techtransit

(c) un comment  the line 78,79 . Replace techtransit from your any word.

group MyRWGroup v2c local  group MyROGroup v2c mynetwork    

(d) uncomment the line 85 .

view all included  .1  80

(f) uncomment the line 93,94 . Replace techtransit from your name.

access MyROGroup "" v2c noauth 0 all none none  access MyRWGroup "" v2c noauth 0 all all all  

STEP 6 : Start the snmpd service and enable from autoboot .

#systemctl start snmpd.service    #systemctl enable snmpd.service

STEP 7 :

# show status (replace the “techtransit” to your comunity name)


[[email protected] ~]# snmpwalk -v2c -c techtransit localhost system
SNMPv2-MIB::sysDescr.0 = STRING: Linux server.techtransit.org 3.10.0-229.14.1.el7.x86_64 #1 SMP Tue Sep 15 15:05:51 UTC 2015 x86_64  SNMPv2-MIB::sysObjectID.0 = OID: NET-SNMP-MIB::netSnmpAgentOIDs.10  DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (8004) 0:01:20.04  SNMPv2-MIB::sysContact.0 = STRING: Root <[email protected]> (configure /etc/snmp/snmp.local.conf)  SNMPv2-MIB::sysName.0 = STRING: server.techtransit.org  SNMPv2-MIB::sysLocation.0 = STRING: Unknown (edit /etc/snmp/snmpd.conf)  SNMPv2-MIB::sysORLastChange.0 = Timeticks: (2) 0:00:00.02  SNMPv2-MIB::sysORID.1 = OID: SNMP-MPD-MIB::snmpMPDCompliance  SNMPv2-MIB::sysORID.2 = OID: SNMP-USER-BASED-SM-MIB::usmMIBCompliance  SNMPv2-MIB::sysORID.3 = OID: SNMP-FRAMEWORK-MIB::snmpFrameworkMIBCompliance  SNMPv2-MIB::sysORID.4 = OID: SNMPv2-MIB::snmpMIB  SNMPv2-MIB::sysORID.5 = OID: TCP-MIB::tcpMIB  SNMPv2-MIB::sysORID.6 = OID: IP-MIB::ip  SNMPv2-MIB::sysORID.7 = OID: UDP-MIB::udpMIB  SNMPv2-MIB::sysORID.8 = OID: SNMP-VIEW-BASED-ACM-MIB::vacmBasicGroup  SNMPv2-MIB::sysORID.9 = OID: SNMP-NOTIFICATION-MIB::snmpNotifyFullCompliance  SNMPv2-MIB::sysORID.10 = OID: NOTIFICATION-LOG-MIB::notificationLogMIB  SNMPv2-MIB::sysORDescr.1 = STRING: The MIB for Message Processing and Dispatching.  SNMPv2-MIB::sysORDescr.2 = STRING: The management information definitions for the SNMP User-based Security Model.  SNMPv2-MIB::sysORDescr.3 = STRING: The SNMP Management Architecture MIB.  SNMPv2-MIB::sysORDescr.4 = STRING: The MIB module for SNMPv2 entities  SNMPv2-MIB::sysORDescr.5 = STRING: The MIB module for managing TCP implementations  SNMPv2-MIB::sysORDescr.6 = STRING: The MIB module for managing IP and ICMP implementations  SNMPv2-MIB::sysORDescr.7 = STRING: The MIB module for managing UDP implementations  SNMPv2-MIB::sysORDescr.8 = STRING: View-based Access Control Model for SNMP.  SNMPv2-MIB::sysORDescr.9 = STRING: The MIB modules for managing SNMP Notification, plus filtering.  SNMPv2-MIB::sysORDescr.10 = STRING: The MIB module for logging SNMP Notifications.  SNMPv2-MIB::sysORUpTime.1 = Timeticks: (2) 0:00:00.02  SNMPv2-MIB::sysORUpTime.2 = Timeticks: (2) 0:00:00.02  SNMPv2-MIB::sysORUpTime.3 = Timeticks: (2) 0:00:00.02  SNMPv2-MIB::sysORUpTime.4 = Timeticks: (2) 0:00:00.02  SNMPv2-MIB::sysORUpTime.5 = Timeticks: (2) 0:00:00.02  SNMPv2-MIB::sysORUpTime.6 = Timeticks: (2) 0:00:00.02  SNMPv2-MIB::sysORUpTime.7 = Timeticks: (2) 0:00:00.02  SNMPv2-MIB::sysORUpTime.8 = Timeticks: (2) 0:00:00.02  SNMPv2-MIB::sysORUpTime.9 = Timeticks: (2) 0:00:00.02  SNMPv2-MIB::sysORUpTime.10 = Timeticks: (2) 0:00:00.02

Creating MRTG Configuration :

Now we will create a configuration file for mrtg data storage, run the command below and output will redirect in the mrtg configuration file.Replace your community name and ip of your server.You can also change WorkDir .

[[email protected] ~]#cfgmaker --snmp-options=:::::2 --ifref=descr --ifdesc=descr --global 'WorkDir: /var/www/html/mymrtg' [email protected] > /etc/mrtg/mrtg.cfg

If you want the graph data in bits instead of bytes , uncomment the below lines from /etc/mrtg/mrtg.cfg configuration file.

#vim /etc/mrtg/mrtg.cfg    Options[_]: growright, bits

Uncomment the below line , which should on line 75  and save and exit from the configuraiton file.

Target[]: \eth0:[email protected]:::::2  noHC[]: yes  SetEnv[]: MRTG_INT_IP="" MRTG_INT_DESCR="eth0"  MaxBytes[]: 250000000  Title[]: eth0 -- server.techtransit.org  PageTop[]: <h1>eth0 -- server.techtransit.org</h1>


Create Index File on mrtg document root through below command.
indexmaker --columns=1 /etc/mrtg/mrtg.cfg > /var/www/html/mymrtg/index.html

Now MRTG Configure on apache configuration file.

Edit the mrtg apache configuration file.

#vim /etc/httpd/conf.d/mrtg.conf

Edit the file like below , change the ip with your ip .

Alias /mrtg /var/www/html/mymrtg    <Location /var/www/html/mymrtg>  Require local  Require ip  # Require host example.org  </Location>

Start Apache :

#systemctl start httpd.service

Now  configuration of mrtg has been done and access URL for MRTG Graph will be like below.

http://server-hostname or IP Address/mymrtg

Thank you 🙂

A Linux Geek with Freelance Contributor, Server/ Cloud Administrator having experience in Open Source and Cloud Technologies.

Review overview
  • DJ May 14, 2017

    Excellent, thank you for the content. I was looking for such guide for a long time.


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