Cisco Nexus 9000 Template issues

[Kevin Nelson]

Hello, running Zabbix 6.4.14, and using the Cisco Nexus 9000 template and having some issue with values returned for temperature. I have it monitoring Module Temperature Sensor however the value that is returned when I run a test is (as an example), 257, when the actual temperature when looking at the Nexus is 25.7 so it seems there is a missing decimal point in the returned value. So I set up a pre-processing rule of 0.1 which I applied and it works by returning the correct value. The problem is that for other temperature monitors for the Nexus return correct values from the Nexus but the pre-processing rule gets applied to it so gives a very low value causing low temperature alarms (for example outlet/inlet temperature and hotspot temperature). Has anyone else seen this issue? Any ideas of a way around the issue? I can only think of having two nexus templates with one having the pre-processing rule and monitoring the module temperature sensor and the other not having the pre-processing rule.

Any help appreciated

[PeterLustig1337]

Hello Kevin Nelson,
we faced the same issue with this template today.
Somehow the module temperature is a floating-point number but hotspot/inlet/outlet are normal decimal numbers.
I fixed it by editing the Template "Cisco Nexus 9000 Series by SNMP" > Discovery List > "Temperature sensors discovery" > Preprocessing > #1 Javascript
and added 0 with a scaling of 0.1 to scales like:

var scales = {'9': 1, '8': 0.001, '7': 0.000001, '0': 0.1};

and additionally added a if-else condition to the main logic:

if (sensor['{#SNMPVALUE}'].match('^Te.*')) {
    sensor['{#SENSOR_SCALE}'] = scales['0'];
} else {
    sensor['{#SENSOR_SCALE}'] = scales[sensor['{#SENSOR_SCALE}']];
}

where .match('^Te.*') matches all the TenGib Interface Modules, you maybe have to change that to fit your needs.

[32pv]

I can't get it to work, where do I insert it into the main logic? It doesn't matter where I put it. Can you share the script?

[32pv]

I have solved the problem. Also added Gi interface to the script. Attaching the script in case anyone else gets stuck.

try {
var sensors = JSON.parse(value);
} catch (e) {
throw "Failed to parse JSON of temperature discovery.";
}

var scales = { '9': 1, '8': 0.001, '7': 0.000001, '0': 0.1 };
var result = sensors.filter(function (sensor) {
if (sensor['{#SENSOR_TYPE}'] !== '8' || typeof (scales[sensor['{#SENSOR_SCALE}']]) === 'undefined') {
return false;
}

sensor['{#SENSOR_SCALE}'] = scales[sensor['{#SENSOR_SCALE}']];

if (sensor['{#SNMPVALUE}'].match('^Te.*') || sensor['{#SNMPVALUE}'].match('^Gi.*')) {
sensor['{#SENSOR_SCALE}'] = scales['0'];
}

return true;
});

return JSON.stringify(result);