Reading out the Temperature

renegade

Hi,

i use mrtg to track my traffic.
is it possible to read the temp via snmp as well?
How?
Thank you!

hardingnick

Hi Renegade,

I am just going through the same snmp config.

I did a snmpwalk on my pfsense box and found this, hopefully when i convert this into an OID it will return the temps..

HOST-RESOURCES-MIB::hrDeviceDescr.104 = STRING: amdtemp0: AMD CPU On-Die Thermal Sensors

Hope this helps,

Nick.

anitchaudhary

Hello Nick and Renegade

Did you ever find the temperature reading in any OID? I need to setup monitor and looking for a way to get the values in an OID.

jimp

Use the NET-SNMP package. On the Host Information tab, setup an Extended Command:

Type: extend
Name: gettemps
Program: /root/gettemps.sh

Then in /root/gettemps.sh, put:

#!/bin/sh
/sbin/sysctl dev.cpu | /usr/bin/awk '/temperature/ {print $2;}'

Set it executable, and then use the line-by-line extended OID to access it:

: snmpwalk -c mycommunity -v 2c 127.0.0.1 nsExtendOutLine.\"gettemps\"
NET-SNMP-EXTEND-MIB::nsExtendOutLine."gettemps".1 = STRING: 42.0C
NET-SNMP-EXTEND-MIB::nsExtendOutLine."gettemps".2 = STRING: 42.0C
NET-SNMP-EXTEND-MIB::nsExtendOutLine."gettemps".3 = STRING: 41.0C
NET-SNMP-EXTEND-MIB::nsExtendOutLine."gettemps".4 = STRING: 42.0C

Setarcos

@jimp

A slight revision on /root/gettemps.sh if you just need the numeric temperature value and not the C (or F) designation :

#!/bin/sh
/sbin/sysctl dev.cpu | /usr/bin/awk '/temperature/ {print $2;}' | sed 's/[CF]//g'