$ apt-get install snmp snmpd snmp-mibs-downloader smitools


rocommunity rpitesting
extend rpitemp /bin/cat /sys/class/thermal/thermal_zone0/temp


$ snmpget -v2c -c rpitesting -Ovq localhost NET-SNMP-EXTEND-MIB::nsExtendOutputFull.\"rpitemp\"


Name Keyword [Parameters] ::= Value


$ snmptranslate -On NET-SNMP-MIB::netSnmpPlaypen


$ smilint -l4 RASPI-MIB.txt
  RASPIMIB.TXT:36: warning: node 'socTemp' must be contained in at least one conformance group
  
  
$ apt-get install --no-install-recommends python3-pip
$ pip3 install netsnmpagent


socTemp = agent.Integer32(
  oidstr = "RASPI-MIB::socTemp"
  writable = False
)


$ snmpget -M+. -v2c -c rpitesting localhost RASPI-MIB::socTemp.0RASPI-MIB::socTemp.0 = INTEGER: 0


$ snmpget -M+. -v2c -c rpitesting localhost RASPI-MIB::socTemp.0
RASPI-MIB::socTemp.0 = INTEGER: 40622