I am adding SNMP sensors for some equipment in my rack, specifically an APC network management card and a Geist environmental monitor.
It seems that for the OID’s I use I get empty strings returned, and 'pysnmp.proto.rfc1905.NoSuchInstance' reported by snmp.
In any sensor where I use value_template and coorce to types I do not get sensor errors, but for sensors where I just use default_value I get errors that the empty string cannot be parsed, as if the default_value is getting ignored.
The bigger issue is that the OID’s appear to not be read.
E.g.
2024-09-27 12:33:23.016 DEBUG (MainThread) [homeassistant.components.snmp.sensor] SNMP OID 1.3.6.1.4.1.318.1.1.1.3.3.1 received type=<class 'pysnmp.proto.rfc1905.NoSuchInstance'> and data
2024-09-27 12:33:23.019 DEBUG (MainThread) [homeassistant.components.snmp.sensor] SNMP OID 1.3.6.1.4.1.318.1.1.1.4.3.1 received type=<class 'pysnmp.proto.rfc1905.NoSuchInstance'> and data
2024-09-27 12:33:23.025 DEBUG (MainThread) [homeassistant.components.snmp.sensor] SNMP OID 1.3.6.1.4.1.318.1.1.1.4.3.4 received type=<class 'pysnmp.proto.rfc1905.NoSuchInstance'> and data
2024-09-27 12:33:23.032 DEBUG (MainThread) [homeassistant.components.snmp.sensor] SNMP OID 1.3.6.1.4.1.318.1.1.1.4.2.9 received type=<class 'pysnmp.proto.rfc1905.NoSuchInstance'> and data
2024-09-27 12:33:23.032 ERROR (MainThread) [homeassistant.components.sensor] Error adding entity sensor.smartups_stairs_output_power for domain sensor with platform snmp
Traceback (most recent call last):
File "/usr/local/lib/python3.12/site-packages/homeassistant/components/sensor/__init__.py", line 657, in state
numerical_value = int(value)
^^^^^^^^^^
ValueError: invalid literal for int() with base 10: ''
Config:
# Output Apparent Power
# .upsOutput.upsAdvOutput.upsAdvOutputApparentPower.0
# .1.3.6.1.4.1.318.1.1.1.4.2.9
- platform: snmp
name: "SmartUPS-Stairs Output Power"
unique_id: smartups_stairs_output_power
host: 192.168.1.11
accept_errors: true
version: 2c
community: public
baseoid: 1.3.6.1.4.1.318.1.1.1.4.2.9
unit_of_measurement: "W"
device_class: power
default_value: 0
# Output Current
# .upsOutput.upsHighPrecOutput.upsHighPrecOutputCurrent.0
# .1.3.6.1.4.1.318.1.1.1.4.3.4
- platform: snmp
name: "SmartUPS-Stairs Output Current"
unique_id: smartups_stairs_output_current
host: 192.168.1.11
accept_errors: true
version: 2c
community: public
baseoid: 1.3.6.1.4.1.318.1.1.1.4.3.4
unit_of_measurement: "A"
device_class: current
value_template: "{{value|float(0) / 10}}"
default_value: 0
Using snmpwalk all seems well:
$ snmpwalk -v 2c -c public smartups-stairs 1.3.6.1.4.1.318.1.1.1.3.3.1
SNMPv2-SMI::enterprises.318.1.1.1.3.3.1.0 = Gauge32: 1216
Any ideas how to fix this?