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CISCO-NTP-MIB

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A new Discovery/Poller module to collect NTP statistics from devices which support the CISCO-NTP-MIB
Discovered peers are stored using components and statistics are displayed using 'applications'
A critical alarm is raised when a stratum of 16 is reported.
This commit is contained in:
Aaron Daniels
2016-08-09 07:14:25 +10:00
parent f1268848b0
commit b9747b2002
9 changed files with 727 additions and 0 deletions
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82
includes/polling/cisco-ntp.inc.php Normal file
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<?php
/*
* LibreNMS module to capture statistics from the CISCO-NTP-MIB
*
* Copyright (c) 2016 Aaron Daniels <aaron@daniels.id.au>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at your
* option) any later version. Please see LICENSE.txt at the top level of
* the source code distribution for details.
*/
if ($device['os_group'] == "cisco") {
$module = 'Cisco-NTP';
require_once 'includes/component.php';
$component = new component();
$options = array();
$options['filter']['type'] = array('=',$module);
$options['filter']['disabled'] = array('=',0);
$options['filter']['ignore'] = array('=',0);
$components = $component->getComponents($device['device_id'],$options);
// We only care about our device id.
$components = $components[$device['device_id']];
// Only collect SNMP data if we have enabled components
if (count($components > 0)) {
// Let's gather the stats..
$cntpPeersVarEntry = snmpwalk_array_num($device, '.1.3.6.1.4.1.9.9.168.1.2.1.1', 2);
// Loop through the components and extract the data.
foreach ($components as $key => &$array) {
// Let's make sure the rrd is setup for this class.
$filename = "ntp-".$array['peer'].".rrd";
$rrd_filename = $config['rrd_dir'] . "/" . $device['hostname'] . "/" . safename ($filename);
if (!file_exists ($rrd_filename)) {
rrdtool_create ($rrd_filename, " DS:stratum:GAUGE:600:0:U DS:offset:GAUGE:600:0:U DS:delay:GAUGE:600:0:U DS:dispersion:GAUGE:600:0:U" . $config['rrd_rra']);
}
$array['stratum'] = $cntpPeersVarEntry['1.3.6.1.4.1.9.9.168.1.2.1.1'][9][$array['UID']];
// Set the status, 16 = Bad
if ($array['stratum'] == 16) {
$array['status'] = 2;
$array['error'] = 'NTP Stratum is Insane';
} else {
$array['status'] = 0;
$array['error'] = '';
}
// Extract the statistics and update rrd
$rrd['stratum'] = $array['stratum'];
$rrd['offset'] = hexdec($cntpPeersVarEntry['1.3.6.1.4.1.9.9.168.1.2.1.1'][23][$array['UID']]);
$rrd['delay'] = hexdec($cntpPeersVarEntry['1.3.6.1.4.1.9.9.168.1.2.1.1'][24][$array['UID']]);
$rrd['dispersion'] = hexdec($cntpPeersVarEntry['1.3.6.1.4.1.9.9.168.1.2.1.1'][25][$array['UID']]);
rrdtool_update ($rrd_filename, $rrd);
// Let's print some debugging info.
d_echo("\n\nComponent: ".$key."\n");
d_echo(" Index: ".$array['UID']."\n");
d_echo(" Peer: ".$array['peer'].":".$array['port']."\n");
d_echo(" Stratum: 1.3.6.1.4.1.9.9.168.1.2.1.1.9.".$array['UID']." = ".$rrd['stratum']."\n");
d_echo(" Offset: 1.3.6.1.4.1.9.9.168.1.2.1.1.23.".$array['UID']." = ".$rrd['offset']."\n");
d_echo(" Delay: 1.3.6.1.4.1.9.9.168.1.2.1.1.24.".$array['UID']." = ".$rrd['delay']."\n");
d_echo(" Dispersion: 1.3.6.1.4.1.9.9.168.1.2.1.1.25.".$array['UID']." = ".$rrd['dispersion']."\n");
// Clean-up after yourself!
unset($filename, $rrd_filename, $rrd);
} // End foreach components
// Write the Components back to the DB.
$component->setComponentPrefs($device['device_id'],$components);
} // end if count components
// Clean-up after yourself!
unset($type, $components, $component, $options, $module);
}