From version 420 fred has a SNMP-Sgent (server) built in.
It operates at UDP port (4000).
The below OID:s are extremely temporary and might very well change.
.1.3.1.1.x.0 is for outgoing data (notice that the 0 looks like an O)
.1.3.1.1.x.1 is for incoming data (notice that the 1 looks like an I)
.1.3.1.1.0.n Total amount of incoming/outgoing data during the current run
.1.3.1.1.m.n Amount of incoming/outgoing data during the last (m*30)s-period before the current 30s-period
for instance: .1.3.1.1.9.1 is the amount of incoming data the prev. 5 min.
Now, below is MRTG-config reading the cyberdo-node at port 15717, syberdo_slave4 at port 15720, and one reading from the machine itself. My readings can be seen at: http://www.acc.umu.se/~cyberdo/snmp/mrtg/_index.htm
To make it work, I use a little script placed at /etc/mrtg/tools/memused.sh (change the references below if you change the location):
#!/bin/sh if [ "$1" == "" ] ; then echo "$0 <hostname[:port]> <community>" ;exit 1 fi totalmem=`snmpget -v 1 -O vq -c "$2" "$1" memTotalReal.0` freemem=`snmpget -v 1 -O vq -c "$2" "$1" memAvailReal.0` expr $totalmem - $freemem echo $totalmem
And finally, the snmp-conf:
LoadMIBs: /usr/share/snmp/mibs/UCD-SNMP-MIB.txt EnableIPv6: no Workdir: /var/www/mrtg/data #PathAdd: /etc/mrtg/tools/ Options[_]: growright,unknaszero Weekformat[^]: V WithPeak[_]:wmy PageTop[_]: <H1>Unnamed Graph</H1> kilo[_]: 1024 MaxBytes[_]: 1000000000 YLegend[_]: Bps ShortLegend[_]: bytes/s LegendI[_]: output LegendO[_]: input # Accumulated datacount the past 5 min Target[fred07_c]: .1.3.1.1.9.0&.1.3.1.1.9.1:storm@localhost:15717::::1 Options[fred07_c]: growright,absolute,unknaszero PageTop[fred07_c]: <H1>Bandwidth usage for cyberdo (5 min. chunks)</H1> Title[fred07_c]: Bandwidth usage for cyberdo (5 min. chunks) # The proper counter Target[fred07_clivebw]: .1.3.1.1.0.0&.1.3.1.1.0.1:storm@localhost:15717::::1 Options[fred07_clivebw]: growright PageTop[fred07_clivebw]: <H1>Bandwidth usage for cyberdo (live)</H1> Title[fred07_clivebw]: Bandwidth usage for cyberdo (live) # Accumulated datacount the past 5 min Target[fred07_s4]: .1.3.1.1.9.0&.1.3.1.1.9.1:storm@localhost:15720::::1 Options[fred07_s4]: growright,absolute,unknaszero PageTop[fred07_s4]: <H1>Bandwidth usage for cyberdo_slave4 (5 min. chunks)</H1> Title[fred07_s4]: Bandwidth usage for cyberdo_slave4 (5 min. chunks) # The proper counter Target[fred07_s4livebw2]: .1.3.1.1.0.0&.1.3.1.1.0.1:storm@localhost:15720::::1 Options[fred07_s4livebw2]: growright, unknaszero PageTop[fred07_s4livebw2]: <H1>Bandwidth usage for cyberdo_slave4 (live)</H1> Title[fred07_s4livebw2]: Bandwidth usage for cyberdo_slave4 (live) YLegend[_]: B ShortLegend[_]: B # Free memory and Total memory Target[fred07_c_mem]: memAvailReal.0&memTotalReal.0:storm@localhost:15717::::1 Options[fred07_c_mem]: growright,absolute,unknaszero LegendI[fred07_c_mem]: Available memory LegendO[fred07_c_mem]: Total memory PageTop[fred07_c_mem]: <H1>Memory usage for cyberdo</H1> Title[fred07_c_mem]: Memory usage for cyberdo # Free memory and Total memory Target[fred07_s4_mem]: memAvailReal.0&memTotalReal.0:storm@localhost:15720::::1 Options[fred07_s4_mem]: growright,gauge,unknaszero LegendI[fred07_s4_mem]: Available memory LegendO[fred07_s4_mem]: Total memory PageTop[fred07_s4_mem]: <H1>Memory usage for cyberdo_slave4</H1> Title[fred07_s4_mem]: Memory usage for cyberdo_slave4 # Used memory and Total memory for the local machine Target[calzone_mem2]: `/etc/mrtg/tools/memused.sh localhost storm` Options[calzone_mem2]: growright,gauge,unknaszero LegendI[calzone_mem2]: Used memory LegendO[calzone_mem2]: Total memory PageTop[calzone_mem2]: <H1>Memory usage for calzone</H1> Title[calzone_mem2]: Memory usage for calzone # Amount of used memory vs. total.. instead of free vs. total Target[fred07_s4_mem2use]: `/etc/mrtg/tools/memused.sh localhost:15720 storm` Options[fred07_s4_mem2use]: growright,gauge,unknaszero LegendI[fred07_s4_mem2use]: Used memory LegendO[fred07_s4_mem2use]: Total memory PageTop[fred07_s4_mem2use]: <H1>Memory used for cyberdo_slave4 2</H1> Title[fred07_s4_mem2use]: Memory used for cyberdo_slave4_2
