Installieren von mrtg und snmp
apt-get install mrtg mrtg-contrib mrtgutils snmp-mibs-downloader snmpd
bei ubuntu falls der downloader nicht gefunden wird: http://packages.ubuntu.com/trusty/all/snmp-mibs-downloader/download
SNMP
Konfiguration von snmp: /etc/snmp/snmp.conf
# As the snmp packages come without MIB files due to license reasons, loading # of MIBs is disabled by default. If you added the MIBs you can reenable # loaging them by commenting out the following line. # mibs :
/etc/snmp/snmpd.conf
# raute vor dem folgenden enfernen rocommunity public localhost
MIBs in der /etc/default/snmpd aktivieren
# Don't load any MIBs by default. # You might comment this lines once you have the MIBs downloaded. #export MIBS= export MIBS=/usr/share/mibs
Dienst neustarten
/etc/init.d/snmpd restart
MRTG:
Konfigurationsdatei /etc/mrtg.conf
###################################################################### # Multi Router Traffic Grapher -- Sample Configuration File ###################################################################### # This file is for use with mrtg-2.5.4c # Global configuration WorkDir: /var/www/mrtg WriteExpires: Yes RunAsDaemon: yes EnableIPv6: no Options[_]: bits,growright Interval: 5 Title[^]: Traffic Analysis for #debian: LoadMIBs: /usr/share/mibs/netsnmp/UCD-SNMP-MIB, /usr/share/mibs/ietf/HOST-RESOURCES-MIB, /usr/share/mibs/ietf/TCP-MIB #ubuntu: #LoadMIBs: /usr/share/snmp/mibs/UCD-SNMP-MIB.txt, /usr/share/mibs/ietf/HOST-RESOURCES-MIB, /usr/share/mibs/ietf/TCP-MIB ## CPU Target[localhost.cpu]:ssCpuRawUser.0&ssCpuRawUser.0:public@127.0.0.1 + ssCpuRawSystem.0&ssCpuRawSystem.0:public@127.0.0.1 + ssCpuRawNice.0&ssCpuRawNice.0:public@127.0.0.1 RouterUptime[localhost.cpu]: public@127.0.0.1 MaxBytes[localhost.cpu]: 100 Title[localhost.cpu]: CPU Load PageTop[localhost.cpu]: <H1>Active CPU Load %</H1> Unscaled[localhost.cpu]: ymwd ShortLegend[localhost.cpu]: % YLegend[localhost.cpu]: CPU Utilization Legend1[localhost.cpu]: Active CPU in % (Load) Legend2[localhost.cpu]: Legend3[localhost.cpu]: Legend4[localhost.cpu]: LegendI[localhost.cpu]: Active LegendO[localhost.cpu]: Options[localhost.cpu]: growright,nopercent ## RAM Target[localhost.mem]: memAvailReal.0&memTotalReal.0:public@127.0.0.1 PageTop[localhost.mem]: <H1>Free Memory</H1> Options[localhost.mem]: nopercent,growright,gauge,noinfo Title[localhost.mem]: Free Memory MaxBytes[localhost.mem]: 1000000 kMG[localhost.mem]: k,M,G,T,P,X YLegend[localhost.mem]: bytes ShortLegend[localhost.mem]: bytes LegendI[localhost.mem]: Free Memory: LegendO[localhost.mem]: Legend1[localhost.mem]: Free memory, not including swap, in bytes ## DISKUSAGE Target[localhost.root]: dskPercent.1&dskPercent.2:public@localhost MaxBytes[localhost.root]: 100 Title[localhost.root]: DISK USAGE PageTop[localhost.root]: <H1>DISK / Usage %</H1> Unscaled[localhost.root]: ymwd ShortLegend[localhost.root]: % YLegend[localhost.root]: DISK Utilization Legend1[localhost.root]: Root disk Legend3[localhost.root]: Legend4[localhost.root]: LegendI[localhost.root]: Root disk LegendO[localhost.root]: Options[localhost.root]: growright,gauge,nopercent
Erstellen des index:
indexmaker -output=/var/www/mrtg/index.html /etc/mrtg.cfg
Starten von mrtg:
env LANG=C /usr/bin/mrtg /etc/mrtg.cfg --logging /var/log/mrtg.log
Wenn ein Webserver installiert ist, sollten nun unter http://ipadresse/mrtg/ die schönen Grafiken liegen.
CRON anpassen, falls via daemon genutzt
vim /etc/cron.d/mrtg
*/5 * * * * root if ! [ -e /etc/mrtg.pid ] && [ -x /usr/bin/mrtg ] && [ -r /etc/mrtg.cfg ] && [ -d "$(grep '^[[:space:]]*[^#]*[[:space:]]*WorkDir' /etc/mrtg.cfg | awk '{ print $NF }')" ]; then env LANG=C /usr/bin/mrtg /etc/mrtg.cfg 2>&1 | tee -a /var/log/mrtg.log ; fi
Debugging:
mit
snmpwalk -v 1 -c public localhost ssCpuRawUser
kann die Ausgabe von SNMP getestet werden, ansonsten gucken was in der /var/log/mrtg.log steht
