librenms-librenms/includes/discovery/sensors/temperatures/serveriron.inc.php

<?php

if ($device['os'] == 'serveriron') {
    echo(" FOUNDRY-SN-AGENT-MIB");

    // Chassis temperature (default)
    $high_limit         = 110;
    $high_warn_limit    = 95;

    $descr    = "Chassis Temperature";
    $oid      = "1.3.6.1.4.1.1991.1.1.1.1.18.0"; // snChasActualTemperature
    $warn_oid = "1.3.6.1.4.1.1991.1.1.1.1.19.0"; // snChasWarningTemperature
    $high_oid = "1.3.6.1.4.1.1991.1.1.1.1.20.0"; // snChasShutdownTemperature
    $value    = snmp_get($device, $oid, '-Oqv');


    $value_warn = snmp_get($device, $warn_oid, '-Oqv');
    if (is_numeric($value_warn)) {
        $high_warn_limit = ($value_warn / 2);
    }

    $value_high = snmp_get($device, $high_oid, '-Oqv');
    if (is_numeric($value_high)) {
        $high_limit = ($value_high / 2);
    }

    if (is_numeric($value)) {
        $current = ($value / 2);
        discover_sensor($valid['sensor'], 'temperature', $device, $oid, 1, 'serveriron-temp', $descr, '2', '1', null, null, $high_warn_limit, $high_limit, $current);
    }
}

// EOF