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58 lines
2.9 KiB
PHP
58 lines
2.9 KiB
PHP
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<?php
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function poll_sensor($device, $class, $unit)
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{
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global $config;
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$query = "SELECT * FROM sensors WHERE sensor_class='$class' AND device_id = '" . $device['device_id'] . "' AND poller_type='snmp'";
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$sensor_data = mysql_query($query);
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while ($sensor = mysql_fetch_assoc($sensor_data))
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{
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echo("Checking $class " . $sensor['sensor_descr'] . "... ");
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$sensor_value = snmp_get($device, $sensor['sensor_oid'], "-OUqnv", "SNMPv2-MIB");
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if ($sensor['sensor_divisor']) { $sensor_value = $sensor_value / $sensor['sensor_divisor']; }
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if ($sensor['sensor_multiplier']) { $sensor_value = $sensor_value * $sensor['sensor_multiplier']; }
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$rrd_file = $config['rrd_dir'] . "/" . $device['hostname'] . "/" . safename("$class-" . $sensor['sensor_descr'] . ".rrd");
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if (!is_file($rrd_file))
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{
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rrdtool_create($rrd_file,"--step 300 \
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DS:sensor:GAUGE:600:-273:20000 \
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RRA:AVERAGE:0.5:1:1200 \
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RRA:MIN:0.5:12:2400 \
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RRA:MAX:0.5:12:2400 \
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RRA:AVERAGE:0.5:12:2400");
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}
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echo("$sensor_value $unit\n");
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rrdtool_update($rrd_file,"N:$sensor_value");
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# FIXME also warn when crossing WARN level!!
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if ($sensor['sensor_limit_low'] != "" && $sensor['sensor_current'] > $sensor['sensor_limit_low'] && $sensor_value <= $sensor['sensor_limit_low'])
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{
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$msg = ucfirst($class) . " Alarm: " . $device['hostname'] . " " . $sensor['sensor_descr'] . " is under threshold: " . $sensor_value . "$unit (< " . $sensor['sensor_limit'];
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$msg .= "$unit) at " . date($config['timestamp_format']);
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notify($device, ucfirst($class) . " Alarm: " . $device['hostname'] . " " . $sensor['sensor_descr'], $msg);
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echo("Alerting for " . $device['hostname'] . " " . $sensor['sensor_descr'] . "\n");
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log_event(ucfirst($class) . ' ' . $sensor['sensor_descr'] . " under threshold: " . $sensor_value . " $unit (< " . $sensor['sensor_limit_low'] . " $unit)", $device, $class, $sensor['sensor_id']);
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}
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else if ($sensor['sensor_limit'] != "" && $sensor['sensor_current'] < $sensor['sensor_limit'] && $sensor_value >= $sensor['sensor_limit'])
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{
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$msg = ucfirst($class) . " Alarm: " . $device['hostname'] . " " . $sensor['sensor_descr'] . " is over threshold: " . $sensor_value . "$unit (> " . $sensor['sensor_limit'];
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$msg .= "$unit) at " . date($config['timestamp_format']);
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notify($device, ucfirst($class) . " Alarm: " . $device['hostname'] . " " . $sensor['sensor_descr'], $msg);
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echo("Alerting for " . $device['hostname'] . " " . $sensor['sensor_descr'] . "\n");
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log_event(ucfirst($class) . ' ' . $sensor['sensor_descr'] . " above threshold: " . $sensor_value . " $unit (> " . $sensor['sensor_limit'] . " $unit)", $device, $class, $sensor['sensor_id']);
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}
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mysql_query("UPDATE sensors SET sensor_current = '$sensor_value' WHERE sensor_class='$class' AND sensor_id = '" . $sensor['sensor_id'] . "'");
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}
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}
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?>
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