[network::hp::procurve::snmp]: Aruba 2930M Switches with only one PSU : The corresponding fan appears as “off” even though it doesn't exist

[sebguilbaud]

Quick description

Aruba 2930M switches (and likely others in the same family) can have multiple redundant power supplies.
Each power supply contains a fan whose status is monitored by the switch, in addition to the fans located in the switch chassis.
This plugin monitors the status of all fans on a switch, and appears to report an error if the switch has only a single power supply.

How to reproduce

• Version of the plugin: 25.12.0
• Information about the monitored resource: Aruba 2930M Switch
• Command line: /usr/lib/centreon/plugins//centreon_hp_procurve.pl --plugin=network::hp::procurve::snmp::plugin --mode=environment --hostname=******** --snmp-version='3' --snmp-community='*****' --snmp-username ****** --authprotocol *** --authpassphrase ****** --privprotocol *** --privpassphrase **** --component='.*' --verbose

Expected result

The plugin should return “OK” since, in fact, no fans are missing; the switch has only one power supply.

Actual result

plugin output :

Status information
WARNING: fan '4' state is off
Checking fans
fan '1' state is ok [instance: 1].
fan '2' state is ok [instance: 2].
fan '3' state is ok [instance: 3].
fan '4' state is off [instance: 4].
fan '5' state is ok [instance: 5].
Checking power supply
power supply '1' state is psNotPresent [instance: 1].
power supply '2' state is psPowered [instance: 2].
Checking sensors
temperature sensor 'temperature.1' state is not present [instance: temperature.1].
checking temperatures
temperature 'Chassis' is '19' celsius [instance: 0]

output of sh system fan on switch, reporting "Fan removed", the actual meaning is "Fan absent"

output of show system power-supply, showing only one PSU present in the switch :

The term “Fan removed” is misleading, but it is “normal”

[lucie-tirand]

Hello :)

Works are in progress about this, we'll keep you informed.