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log4phpを使ってZabbixAPIのログを出力する

Last updated at Posted at 2016-07-03

ZabbixAPIですが通常ではログが出せなくデバックが辛いのでlog4phpを使ってなんとかならないかと試してみました。

取り敢えず、インストール

yum -y install php-pear
pear channel-discover pear.apache.org/log4php
pear install log4php/Apache_log4php

で、設定ファイルの作成。
zlog4と言うロガーを作りました。
ログは/tmp/ZabbixAPI.logに出力します。

/usr/share/zabbix/log4php.xml
<configuration xmlns="http://logging.apache.org/log4php/">

    <appender name="myConsoleAppender" class="LoggerAppenderConsole" />

    <appender name="myFileAppender" class="LoggerAppenderFile">
        <layout class="LoggerLayoutPattern">
            <param name="conversionPattern" value="%date{Y-m-d H:i:s,u} [%logger] %message%newline" />
        </layout>
        <param name="file" value="/tmp/ZabbixAPI.log" />
    </appender>

    <logger name="zlog4">
        <appender_ref ref="myFileAppender" />
    </logger>

    <root>
        <level value="DEBUG" />
        <appender_ref ref="myConsoleAppender" />
    </root>
</configuration>

2016年7月4日api_jsonrpc.phpのみにlog4phpの設定を入れるとWebインタフェースの画面が表示されなくなる事象が発生。
内部でapi_jsonrpc.php通らずにhost.getが呼ばれているようです。
と言う訳で、下記の様に変更しました。

Z.phpでロガーを設定し…

/usr/share/zabbix/include/classes/core/Z.php
<?php
/*
** Zabbix
** Copyright (C) 2001-2015 Zabbix SIA
**
** 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 2 of the License, or
** (at your option) any later version.
**
** This program 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 this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
**/


require_once dirname(__FILE__).'/ZBase.php';

require_once('log4php/Logger.php');                   <-- log4phpの設定
Logger::configure('/usr/share/zabbix/log4php.xml');   <-- log4phpの設定
$zbxlog4php = Logger::getLogger('zlog4');             <-- log4phpの設定
global $zbxlog4php;                                   <-- log4phpの設定


/**
 * A wrapper for the ZBase class.
 *
 * Feel free to modify and extend it to change the functionality of ZBase.
 */
class Z extends ZBase {

}

api_jsonrpc.phpの最後の一行にshutdownを設定

/usr/share/zabbix/api_jsonrpc.php

        echo CJs::encodeJson($response);
}
$zbxlog4php->shutdown();                              <-- log4phpの設定

これで準備OK

テストはhost.getで行いました。
開始直後とSQL実行と終了直線でログを出力します。

/usr/share/zabbix/api/classes/CHost.php

        public function get($options = array()) {
                $result = array();
                $userType = self::$userData['type'];
                $userid = self::$userData['userid'];

global $zbxlog4php;
$zbxlog4php->info("host.get start");

                $sqlParts = $this->applyQueryOutputOptions($this->tableName(), $this->tableAlias(), $options, $sqlParts);
                $sqlParts = $this->applyQuerySortOptions($this->tableName(), $this->tableAlias(), $options, $sqlParts);
                $sqlParts = $this->applyQueryNodeOptions($this->tableName(), $this->tableAlias(), $options, $sqlParts);
$zbxlog4php->info($sqlParts);
                $res = DBselect($this->createSelectQueryFromParts($sqlParts), $sqlParts['limit']);
                while ($host = DBfetch($res)) {

                // removing keys (hash -> array)
                if (is_null($options['preservekeys'])) {
                        $result = zbx_cleanHashes($result);
                }

$zbxlog4php->info("host.get end");
                return $result;
        }

        /**
         * Get Host ID by Host name
         *
         * @param array $host_data
         * @param string $host_data['host']
         *
         * @return int|boolean
         */
        public function getObjects($hostData) {


下記が実行結果

]# cat /tmp/ZabbixAPI.log
2016-07-03 09:34:37,850 [zlog4] host.get start
2016-07-03 09:34:37,853 [zlog4] Array
(
    [select] => Array
        (
            [0] => h.*
        )

    [from] => Array
        (
            [hosts] => hosts h
        )

    [where] => Array
        (
            [flags] => h.flags IN (0,4)
            [status] => h.status IN (0,1)
            [filter] => h.host='Zabbix server'
        )

    [group] => Array
        (
        )

    [order] => Array
        (
        )

    [limit] =>
)

2016-07-03 09:34:37,853 [zlog4] host.get end

これで画面も表示できてデバック情報出すことで着ました。
因みに画面からhost.get呼ばれる場合もこれでログが出ます。

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