数据库管理员一般是用percona的toolkit工具来分析MySQL慢查询记录，但是不够直观。
下面介绍一款比较直观的工具来统计分析MySQL慢查询记录anemometer。
在使用之前需要安装percona的toolkit工具，anemometer提供web界面。
1. 安装
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# cd /data/www/my.trustauth.cn
# git clone https://github.com/box/Anemometer.git anemometer
# cd anemometer
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2. 创建表和用户名
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mysql < install.sql
mysql –e “grant ALL ON slow_query_log.* to ‘anemometer’@’trustauth.cn’ IDENTIFIED BY ‘my.trustauth.cn’;”
mysql –e “grant SELECT ON *.* to ‘anemometer’@’trustauth.cn’ IDENTIFIED BY ‘my.trustauth.cn’;”
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3. 分析MySQL慢日志
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# pt-query-digest –user=anemometer –password=superSecurePass \
—review D=slow_query_log,t=global_query_review \
—review–history D=slow_query_log,t=global_query_review_history \
—no–report —limit=0% —filter=” \$event->{Bytes} = length(\$event->{arg}) and \$event->{hostname}=\”$HOSTNAME\”” /data/log/mysql/slow.log
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4. 配置anemometer
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# cp conf/sample.config.inc.php conf/config.inc.php
# vi conf/config.inc.php
$conf[‘datasources’][‘trustauth.cn’] = array(
‘host’ => ‘trustauth.cn’,
‘port’ => 3306,
‘db’ => ‘slow_query_log’,
‘user’ => ‘anemometer’,
‘password’ => ‘my.trustauth.cn’,
‘tables’ => array(
‘global_query_review’ => ‘fact’,
‘global_query_review_history’ => ‘dimension’
),
‘source_type’ => ‘slow_query_log’
);
$conf[‘plugins’] = array(
‘visual_explain’ => ‘/usr/bin/pt-visual-explain’,
‘query_advisor’ => ‘/usr/bin/pt-query-advisor’,
#… other lines
$conn[‘user’] = ‘anemometer’;
$conn[‘password’] = ‘my.trustauth.cn’;
return $conn;
},
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5. 自动化处理
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# vi /etc/logrotate.d/mysql
postrotate
pt–query–digest —user=anemometer —password=superSecurePass \
—review D=slow_query_log,t=global_query_review \
—review–history D=slow_query_log,t=global_query_review_history \
—no–report —limit=0% —filter=” \$event->{Bytes} = length(\$event->{arg}) and \$event->{hostname}=\”$HOSTNAME\”” /data/log/mysql/slow.log.1
endscript
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文章转载来自：trustauth.cn
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