librenms/includes/polling/temperatures.inc.php
2010-07-11 19:11:46 +00:00

50 lines
2.3 KiB
PHP
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<?php
$query = "SELECT * FROM sensors WHERE sensor_class='temperature' AND device_id = '" . $device['device_id'] . "'";
$temp_data = mysql_query($query);
while($temperature = mysql_fetch_array($temp_data)) {
echo("Checking temp " . $temperature['sensor_descr'] . "... ");
for ($i = 0;$i < 5;$i++) # Try 5 times to get a valid temp reading
{
if ($debug) echo "Attempt $i ";
$temp_cmd = $config['snmpget'] . " -M ".$config['mibdir'] . " -m SNMPv2-MIB -O Uqnv -" . $device['snmpver'] . " -c " . $device['community'] . " " . $device['hostname'].":".$device['port'] . " " . $temperature['sensor_oid'] . "|grep -v \"No Such Instance\"";
$temp = trim(str_replace("\"", "", shell_exec($temp_cmd)));
if ($temp != 9999) break; # TME sometimes sends 999.9 when it is right in the middle of an update;
sleep(1); # Give the TME some time to reset
}
if ($temperature['sensor_precision']) { $temp = $temp / $temperature['sensor_precision']; }
$temprrd = $config['rrd_dir'] . "/" . $device['hostname'] . "/" . safename("temp-" . $temperature['sensor_descr'] . ".rrd");
if (!is_file($temprrd)) {
`rrdtool create $temprrd \
--step 300 \
DS:temp:GAUGE:600:-273:1000 \
RRA:AVERAGE:0.5:1:1200 \
RRA:MIN:0.5:12:2400 \
RRA:MAX:0.5:12:2400 \
RRA:AVERAGE:0.5:12:2400`;
}
echo($temp . "C\n");
rrdtool_update($temprrd,"N:$temp");
if($temperature['sensor_current'] < $temperature['sensor_limit'] && $temp >= $temperature['sensor_limit']) {
if($device['sysContact']) { $email = $device['sysContact']; } else { $email = $config['email_default']; }
$msg = "Temp Alarm: " . $device['hostname'] . " " . $temperature['sensor_descr'] . " is " . $temp . " (Limit " . $temperature['sensor_limit'];
$msg .= ") at " . date($config['timestamp_format']);
notify($device, "Temp Alarm: " . $device['hostname'] . " " . $temperature['sensor_descr'], $msg);
echo("Alerting for " . $device['hostname'] . " " . $temperature['sensor_descr'] . "\n");
log_event('Temperature ' . $temperature['sensor_descr'] . " over threshold: " . $temp . " <20>C (> " . $temperature['sensor_limit'] . " <20>C)", $device['device_id'], 'temperature', $temperature['sensor_id']);
}
mysql_query("UPDATE sensors SET sensor_current = '$temp' WHERE sensor_class='temperature' AND sensor_id = '" . $temperature['sensor_id'] . "'");
}
?>