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This section / article will cover the SNMP (ver1) and MRTG configurations. Install necessary packages: yum -y install mrtg net-snmp net-snmp-perl net-snmp-utils Edit snmpd.conf file to setup community strings and other monitors:- [root@www mrtg]# vi /etc/snmp/snmpd.conf com2sec notConfigUser default snmpsecret group notConfigGroup v1 notConfigUser view roview included .1 access notConfigGroup "" any noauth exact roview rwview none syslocation SomewhereintheWorld syscontact Root <
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> disk / load 12 14 14 pass .1.3.6.1.4.1.4413.4.1 /usr/bin/ucd5820stat [root@www mrtg]#
service snmpd restart chkconfig --level 35 snmpd on Create MRTG configuration file and manually edit it. Make sure to include extra (required) MIBs, using the LoadMIBs directive:- [root@www mrtg]# /usr/bin/cfgmaker --global 'Options[_]: growright, bits, unknaszero' --ifref=ip \ --ifdesc=descr --noreversedns --global 'WorkDir: /var/www/mrtg' \ --output=/etc/mrtg/mrtg.cfg snmpsecret@localhost
[root@www mrtg]# vi /etc/mrtg/mrtg.cfg EnableIPv6: no Options[_]: growright, bits, unknaszero WorkDir: /var/www/mrtg
Target[localhost_10.1.2.3]: /10.1.2.3:snmpsecret@localhost: SetEnv[localhost_10.1.2.3]: MRTG_INT_IP="10.1.2.3" MRTG_INT_DESCR="eth0" MaxBytes[localhost_10.1.2.3]: 1250000 Title[localhost_10.1.2.3]: eth0 -- www.example.com PageTop[localhost_10.1.2.3]: <h1>eth0 -- www.example.com</h1> <div id="sysdetails"> <table> ...
[output snipped]
...
</table> </div>
LoadMIBs: /usr/share/snmp/mibs/UCD-SNMP-MIB.txt, /usr/share/snmp/mibs/TCP_MIB.txt, /usr/share/snmp/mibs/HOST-RESOURCES-MIB.txt
Target[EXAMPLE_root]:dskPercent.1&dskPercent.1:snmpsecret@localhost MaxBytes[EXAMPLE_root]: 100 Title[EXAMPLE_root]: DISK USAGE - / PageTop[EXAMPLE_root]: <h1>DISK Usage in % (/)</h1> Unscaled[EXAMPLE_root]: ymwd ShortLegend[EXAMPLE_root]: % YLegend[EXAMPLE_root]: DISK Utilization Legend1[EXAMPLE_root]: /: Legend2[EXAMPLE_root]: /: Legend3[EXAMPLE_root]: Legend4[EXAMPLE_root]: LegendI[EXAMPLE_root]: /: LegendO[EXAMPLE_root]: /: Options[EXAMPLE_root]: growright, unknaszero, gauge,nopercent
Target[EXAMPLE_loadavg]: laLoad.2&laLoad.3:snmpsecret@localhost MaxBytes[EXAMPLE_loadavg]: 5000 Title[EXAMPLE_loadavg]: Load Average PageTop[EXAMPLE_loadavg]: <h1>Load Average</h1> YLegend[EXAMPLE_loadavg]: Load Average ShortLegend[EXAMPLE_loadavg]: Legend1[EXAMPLE_loadavg]: Load average 5 min Legend2[EXAMPLE_loadavg]: Load average 15 min LegendI[EXAMPLE_loadavg]: 5min load avg LegendO[EXAMPLE_loadavg]: 15min load avg Options[EXAMPLE_loadavg]: nopercent,growright,noinfo,gauge, unknaszero
Target[EXAMPLE_memory]: memTotalReal.0&memAvailReal.0:snmpsecret@localhost Options[EXAMPLE_memory]: nopercent,growright,gauge,noinfo, unknaszero Title[EXAMPLE_memory]: Free Memory PageTop[EXAMPLE_memory]: <H1>Free Memory</H1> MaxBytes[EXAMPLE_memory]: 2147483648 YLegend[EXAMPLE_memory]: bytes ShortLegend[EXAMPLE_memory]: bytes kMG[EXAMPLE_memory]: k,M Legend1[EXAMPLE_memory]: Total Physical Memory Legend2[EXAMPLE_memory]: Free Physical Memory LegendI[EXAMPLE_memory]: Total Memory LegendO[EXAMPLE_memory]: Free Memory Target[cpusum]:ssCpuRawUser.0&ssCpuRawUser.0:snmpsecret@localhost + ssCpuRawSystem.0&ssCpuRawSystem.0:
snmpsecret@localhost + ssCpuRawNice.0&ssCpuRawNice.0:snmpsecret@localhost
MaxBytes[cpusum]: 100
Title[cpusum]: CPU Usage % (User+System+Nice)
PageTop[cpusum]: <H1>CPU Usage % (User+System+Nice)</H1>
ShortLegend[cpusum]: %
YLegend[cpusum]: CPU Usage
Legend1[cpusum]: CPU usage in %
Legend2[cpusum]:
Legend3[cpusum]:
Legend4[cpusum]:
LegendI[cpusum]: Active
LegendO[cpusum]:
Options[cpusum]: growright,nopercent, unknaszero
[root@www mrtg]#
Create index pages:- [root@www mrtg]# indexmaker --title="EXAMPLE server stats" --output=/var/www/mrtg/index.html /etc/mrtg/mrtg.cfg Run the following three times to generate data files:- [root@www mrtg]# 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
That's all. Try accessing the mrtg page by using: http://www.example.com/mrtg The cron job for mrtg is already setup my mrtg RPM. Regards, Kamran
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