Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle 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.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * Admin tool "Opcache management" - Nagios monitoring check, part "cli"

 *

 * @package    tool_opcache

 * @copyright  2017 Alexander Bias, Ulm University <alexander.bias@uni-ulm.de>

 * @copyright  inspired by code by Mikanoshi, https://exchange.icinga.com/Mikanoshi/PHP+opcache+monitoring+plugin

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

define('CLI_SCRIPT', true);

require(__DIR__.'/../../../../config.php');

require_once($CFG->libdir.'/clilib.php');

require_once($CFG->libdir . '/filelib.php');

// Get cli options.

list($options, $unrecognized) = cli_get_params(['help' => false,

                                                    'url' => null,

                                                    'warning' => 80,

                                                    'critical' => 90, ],

                                               ['h' => 'help',

                                                    'u' => 'url',

                                                    'w' => 'warning',

                                                    'c' => 'critical', ]);

if ($unrecognized) {

    $unrecognized = implode("\n  ", $unrecognized);

    cli_error(get_string('cliunknowoption', 'admin', $unrecognized));

}

// Initialize return code as UNKNOWN.

$returnstatus = 3;

// CLI help.

if ($options['help'] || !($options['url'])) {

    $help = "Nagios check for PHP opcache

Options:

-u, --url       Full URL to check_opcache_web.php

-w, --warning   Threshold for warning (Default: 80)

-c, --critical  Threshold for critical (Default: 90)

-h, --help      Print out this help

Example:

\$ sudo -u www-data /usr/bin/php admin/tool/cli/check_opcache.php ".

        "--url=\"https://example.com/admin/tool/opcache/cli/check_opcache_web.php\" --warning=75 --critical=85

";

    cli_writeln($help);

    exit($returnstatus);

}

// Clean CLI parameters.

$options['url'] = clean_param($options['url'], PARAM_URL);

$options['warning'] = clean_param($options['warning'], PARAM_INT);

$options['critical'] = clean_param($options['critical'], PARAM_INT);

// Fetch Opcache figures from webserver.

$curl = new curl(['ignoresecurity' => true]); // The ignoresecurity option means that $CFG->curlsecurityblockedhosts is

                                                   // ignored by purpose. Otherwise, $CFG->curlsecurityblockedhosts might prevent

                                                   // that the web part of this CLI tool is fetched.

$curloptions = [

    'FRESH_CONNECT' => true,

    'RETURNTRANSFER' => true,

    'FORBID_REUSE' => true,

    'HEADER' => false,

    'CONNECTTIMEOUT' => 5,

];

$params = [];

if (isset($CFG->tool_opcache_check_secretkey)) {

    $params['secret'] = $CFG->tool_opcache_check_secretkey;

}

$curlret = $curl->get($options['url'], $params, $curloptions);

// Die if secret key was required but not correct (basically, this should not happen).

if ($curlret == 'FORBIDDEN') {

    $returnstatus = 2;

    $out = 'Secret key is required but is not correct.';

}

// Pick Opcache figures.

$figures = explode(PHP_EOL, $curlret);

$used = clean_param($figures[0], PARAM_INT);

$free = clean_param($figures[1], PARAM_INT);

$hitspct = clean_param($figures[2], PARAM_FLOAT);

$misspct = clean_param($figures[3], PARAM_FLOAT);

// Calculate used percentage value.

$usedpct = round($used / ($used + $free) * 100, 1);

// Calculate return status.

if ($usedpct >= $options['critical']) {

    $returnstatus = 2;

} else if ($usedpct >= $options['warning']) {

    $returnstatus = 1;

} else {

    $returnstatus = 0;

}

// Concatenate return string including performance data.

$out = $usedpct."% cache used | ".

        "used_pct=".$usedpct."%;".$options['warning'].";".$options['critical']." hit_pct=".$hitspct."%; miss_pct=".$misspct."%;";

// Echo return string.

if ($returnstatus == 0) {

    cli_writeln('OK - '.$out);

} else if ($returnstatus == 1) {

    cli_writeln('WARNING - '.$out);

} else {

    cli_writeln('CRITICAL - '.$out);

}

// Exit with calculated return status.

exit($returnstatus);