Subversion Repositories vnag

<?php /* <ViaThinkSoftSignature>

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</ViaThinkSoftSignature> */ ?>

<?php

/*

 * VNag - Nagios Framework for PHP

 * Developed by Daniel Marschall, ViaThinkSoft <www.viathinksoft.com>

 * Licensed under the terms of the Apache 2.0 license

 *

 * Revision 2018-12-25

 */

// TODO: Anstelle "-d diskname[,diskname[,...]]" wäre es schöner ohne Komma, denn dann könnte man auch die Shell Erweiterung /dev/sd* nutzen

declare(ticks=1);

class DiskRunningCheck extends VNag {

        // Currently, we do not accept wildcards ('sd*' and 'hd*') because this plugin should monitor if disks become offline, e.g. horribly fail or get disconnected.

        // If that would happen, the disk might vanish from the device-folder and therefore would not be detected by the wildcard anymore.

        protected $argDisks = null;

        public function __construct() {

                parent::__construct();

                if ($this->is_http_mode()) {

                        // Don't allow the standard arguments via $_REQUEST

                        $this->registerExpectedStandardArguments('');

                } else {

                        $this->registerExpectedStandardArguments('Vhtv');

                }

                $this->getHelpManager()->setPluginName('vnag_disk_running');

                $this->getHelpManager()->setVersion('1.0');

                $this->getHelpManager()->setShortDescription('This plugin checks if a disk is running/online, even if no SMART functionality is available.');

                $this->getHelpManager()->setCopyright('Copyright (C) 2011-$CURYEAR$ Daniel Marschall, ViaThinkSoft.');

                $this->getHelpManager()->setSyntax('$SCRIPTNAME$ -d diskname[,diskname[,...]]');

                $this->getHelpManager()->setFootNotes('If you encounter bugs, please contact ViaThinkSoft at www.viathinksoft.com');

                // Individual (non-standard) arguments:

                $this->addExpectedArgument($this->argDisks = new VNagArgument('d', 'disknames', VNagArgument::VALUE_REQUIRED, 'disks', 'Disks to be monitored, e.g. "sda,sdb"'));

        }

        protected function cbRun() {

                $count_total = 0;

                $count_running = 0;

                $count_offline = 0;

                $count_warning = 0;

                $count_unknown = 0;

                $disks = $this->argDisks->getValue();

                if (empty($disks)) {

                        throw new Exception("Please specify the disks you want to monitor.");

                }

                $disks = explode(',',$disks);

                foreach ($disks as $disk) {

                        $disk = preg_replace('@^/dev/@', '', $disk); // accept '/dev/' too

                        // We do not check the size, in case the user has more than 26 disks; https://rwmj.wordpress.com/2011/01/09/how-are-linux-drives-named-beyond-drive-26-devsdz/

                        // But we check if everything is OK, and nothing nasty is done here

                        $disk = preg_replace('@[^a-zA-Z0-9]@', '', $disk);

                        $disk = preg_replace('@^(...)\d+@', '\\1', $disk); // accept 'sdh1' too

                        $count_total++;

                        if (!file_exists("/dev/$disk")) {

                                $this->addVerboseMessage("$disk : Drive does not exist", VNag::VERBOSITY_SUMMARY);

                                $this->setStatus(VNag::STATUS_CRITICAL);

                                $count_offline++;

                        } else {

                                $state_file = "/sys/block/$disk/device/state";

                                if (!file_exists($state_file)) {

                                        $this->addVerboseMessage("$disk : Cannot fetch state (Is this a valid block device?)", VNag::VERBOSITY_SUMMARY);

                                        $this->setStatus(VNag::STATUS_CRITICAL);

                                        $count_unknown++;

                                } else {

                                        $state = trim(file_get_contents($state_file));

                                        if ($state != 'running') {

                                                $this->addVerboseMessage("$disk : $state", VNag::VERBOSITY_SUMMARY);

                                                $this->setStatus(VNag::STATUS_CRITICAL);

                                                $count_offline++;

                                        } else {

                                                #$ioerr_file = "/sys/block/$disk/device/ioerr_cnt";

                                                #if (file_exists($ioerr_file) && (($ioerr_cont = trim(file_get_contents($ioerr_file))) != '0x0')) {

                                                #       $this->addVerboseMessage("$disk : High IOERR count ($ioerr_cont), but state is reported as $state", VNag::VERBOSITY_SUMMARY);

                                                #       $this->setStatus(VNag::STATUS_WARNING);

                                                #       $count_warning++;

                                                #} else {

                                                        $this->addVerboseMessage("$disk : $state", VNag::VERBOSITY_ADDITIONAL_INFORMATION);

                                                        $this->setStatus(VNag::STATUS_OK); // Note: This won't unset a previously set critical state

                                                        $count_running++;

                                                #}

                                        }

                                }

                        }

                }

                $this->setHeadline(sprintf('Checked %d disks (%d running, %d offline, %d warnings, %d unknown)', $count_total, $count_running, $count_offline, $count_warning, $count_unknown));

        }

}