How to install MRTG on RedHat to monitor the traffic of local network card
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Install MRTG on RedHat to monitor the traffic of local network card
System environment: redhat9.0
Essential software:
The system must have the following software installed, all of which can be found on the CD:
Gd-1.8.4-11
Gd-devel-1.8.4-11
Libpng-1.2.2-16
Libpng-devel-1.2.2-16
Libpng10-1.0.13-8
Libpng10-devel-1.0.13-8
Perl-5.8.0-88
Zlib-1.1.4-8
Zlib-devel-1.1.4-8
Httpd-manual-2.0.40-21
Httpd-2.0.40-21)
Gcc-3.2.2-5
Net-snmp-5.06-17
Mrtg-2.9.29.tar.gz
MRTG works on the SNMP protocol, you must install SNMP to start MRTG to observe your network, I just did not configure NET-SNMP, so MRTG display will not have graphics, I made such a mistake. Some networks are required to install UCD-SNMP, my redhat 9.0 is installed by default is net-snmp, so I did not use ucd-snmp, have not tried, but I think it is more or less the same.
1. First, install and configure net-snmp
# rpm-ivh net-snmp-5.06-17 # usually redhat9.0 is installed by default. After # vi / etc/snmp/snmpd.conf # is installed, configure the / etc/snmp/snmpd.conf file to work with mrtg.
Go to line 90 and remove the # below
# view mib2 included .iso.org.dod.internet.mgmt.mib-2 fc # on line 89
Put the following statement # on line 62
Access notConfigGroup "" any noauth exact systemview none none
Change to:
Access notConfigGroup "" any noauth exact mib2 none none
Go to line 397
Rocommunity mrtg
Remember, this is the community is mrtg, not the common public, this will be used in the future to remember, I just used public many times to get the graphics, now think of, stupid. Public may be the default in ucd-snmp and has not been used. What does Ro mean, read only, also heard others say (and friends asked, what to do without this line, hey, add to go! To ask such a question!).
Ok, after the modification, you can start the snmpd service, and the SNMP configuration is complete.
# / etc/rc.d/init.d/snmpd start
two。 Install mrtg
Tar zvxf mrtg-2.9.29.tar.gz cd mrtg-2.9.29. / configure-- prefix=/usr/local/mrtg\-- with-gd=/usr/include\-- with-gd-lib=/usr/lib\-- with-gd-inc=/usr/include\-- with-png=/usr/include\-with-zlib=/usr/include & & make & & make install
3. Configure mrtg
# mkdir / var/www/html/mrtg where / var/www/html is the default home address of www. You may be different from me. # cp images/* / var/www/html/mrtg images/* is in the mrtg-2.9.29 folder where mrtg-2.9.29.tar.gz is unzipped # / usr/local/mrtg/bin/cfgmaker-- output=/var/www/html/mrtg/mrtg.cfg\ > Mrtg@192.168.0.1 # here is to create a mrtg.cfg file
Please pay special attention to this: in the mrtg@192.168.0.1 line, mrtg is meaningful (in the default search code in the snmp communication service, the default may be public, which is why you just want to check / etc/snmp/snmpd.conf), so, if the dynamic DNS name of your host is your.domain.name, then you must write it as mrtg@your.domain.name! Make no mistake! Many netizens have encountered this problem!
Under the / var/www/html/mrtg directory, and monitor the address of 192.168.0.1. In this example, this address is the local Nic IP address.
# vi / var/www/html/mrtg/mrtg.cfg # modify the mrtg.cfg file, mainly by modifying the following to suit your actual situation
WorkDir: / var/www/html/mrtg Options [_]: growright, bits Language:GB2312
One thing to note about this is that there are no spaces in front of them, otherwise there will be some "ERROR: Line 8 (WorkDir: / var/www/html/mrtg) in CFG file (mrtg) does not make sense" error.
Here is the following:
# / usr/local/mrtg/bin/mrtg / var/www/html/mrtg/mrtg.cfg
This needs to be run 3 times, the first two times will report an error, ignore him, the third time there should be no error, however, if there is a problem, you need to modify the mrtg.cfg, and then execute until no error occurs.
The mistake goes something like this:
Rateup WARNING: / usr/local/mrtg2/bin/rateup could not read the primary log file for localhost Rateup WARNING: / usr/local/mrtg2/bin/rateup The backup log file for localhost was invalid as well Rateup WARNING: / usr/local/mrtg2/bin/rateup Can't remove localhost.old updating log file Rateup WARNING: / usr/local/mrtg2/bin/rateup Can't rename localhost.log to localhost.old updating log file
4. Make the home page index.html:
# / usr/local/mrtg/bin/indexmaker\ >;-- output=/var/www/html/mrtg/index.html\ >;-- title= server traffic statistics\ >; / var/www/html/mrtg/mrtg.cfg
The above program indexmaker is making the home page. Will automatically output an index.html file. If you modify this file later (for example, increase the detection of CPU, hard disk, etc., you need to generate it again, otherwise the drawing will not come out.)
5. Set to be executed every 5 minutes
Running mrtg manually does not generate appropriate statistics on a regular basis, so * * automatically run mrtg statistics on a regular basis. The default is once every five minutes.
Enter the editing state as root identity crontab-e, and add the following:
* / 5 * root / usr/local/mrtg/bin/mrtg / var/www/html/mrtg/mrtg.cfg
Ok! At this point, when the configuration is complete, be sure to restart the snmp and httpd services!
Visit: http://192.168.0.1/mrtg/
You can see the network traffic graph.
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