Use of uninitialized value in addition (+)

[Benoit221]

Hello,

When executing this command :
perl centreon_plugins.pl --plugin=hardware::sensors::apc::snmp::plugin --mode=sensors --hostname=192.168.1.1 --snmp-community=public --snmp-version=2c --component humidity --warning='humidity,.,45:65' --critical='humidity,.,35:70'

I obtain this result :
Use of uninitialized value in addition (+) at /usr/lib/centreon/plugins/centreon-plugins/centreon/plugins/templates/hardware.pm line 303.
Use of uninitialized value in addition (+) at /usr/lib/centreon/plugins/centreon-plugins/centreon/plugins/templates/hardware.pm line 304.
Use of uninitialized value in concatenation (.) or string at /usr/lib/centreon/plugins/centreon-plugins/centreon/plugins/templates/hardware.pm line 305.
WARNING: Humidity 'Main Module:Sonde de temperature' is 36 % | 'Main Module:Sonde de temperature#hardware.sensor.humidity.percentage'=36%;45:65;35:70;0;100 'hardware.temperature.count'=1;;;;

Notice that it's working as expected for temperature sensor but not for humidity

Best regards,
B LORAND

[omercier]

Hi @Benoit221,
Can you give me more context by adding the --debug option to the command line ?

[Benoit221]

Hi @omercier,

We are using Centreon 23.04.9 on Debian 11. Actual centreon plugin is 20230912-083720.

root@Deb-Centreon:~/centreon-plugins# perl centreon_plugins.pl --plugin=hardware::sensors::apc::snmp::plugin --mode=sensors --hostname=192.168.1.1 --snmp-community=public --snmp-version=2c --component humidity --warning='humidity,.,45:65' --critical='humidity,.,35:70' --debug
Use of uninitialized value in addition (+) at /usr/lib/centreon/plugins/centreon-plugins/centreon/plugins/templates/hardware.pm line 303.
Use of uninitialized value in addition (+) at /usr/lib/centreon/plugins/centreon-plugins/centreon/plugins/templates/hardware.pm line 304.
Use of uninitialized value in concatenation (.) or string at /usr/lib/centreon/plugins/centreon-plugins/centreon/plugins/templates/hardware.pm line 305.
WARNING: Humidity 'Main Module:Sonde de temperature' is 35 % | 'Main Module:Sonde de temperature#hardware.sensor.humidity.percentage'=35%;45:65;35:70;0;100 'hardware.temperature.count'=1;;;;
.1.3.6.1.4.1.318.1.1.10.4.1.2.1.2.0 = Main Module
.1.3.6.1.4.1.318.1.1.10.3.12.11.0 = 1
Checking humidities
.1.3.6.1.4.1.318.1.1.10.4.2.3.1.1.0.1 = 0
.1.3.6.1.4.1.318.1.1.10.4.2.3.1.2.0.1 = 1
.1.3.6.1.4.1.318.1.1.10.4.2.3.1.3.0.1 = Sonde de temperature
.1.3.6.1.4.1.318.1.1.10.4.2.3.1.4.0.1 = salle serveur 1
.1.3.6.1.4.1.318.1.1.10.4.2.3.1.5.0.1 = 23
.1.3.6.1.4.1.318.1.1.10.4.2.3.1.6.0.1 = 35
.1.3.6.1.4.1.318.1.1.10.4.2.3.1.7.0.1 = 2
.1.3.6.1.4.1.318.1.1.10.4.2.3.1.8.0.1 = 1
humidity 'Main Module:Sonde de temperature' alarm status is normal [instance: module.0.1] [value: 35] [comm: ok]

[omercier]

@Benoit221 I've tested it with your data (see PR comment) so it should work well if you add this simple line to your local code.
I cannot guarantee this fix will be the right one though, since it locates in a widely shared part of the code, so it might affect the behaviour of other plugins, so the real developers may reject it.

[omercier]

Hi @Benoit221,
Your issue has been fixed.
The fix will be out mid-march in the rpm/deb packaged plugins.
Feel free to give feedback here!