使用Anemometer分析MySQL慢查询记录

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。

anemometer介绍参见：https://github.com/box/Anemometer/wiki

1. 安装

# cd /data/www/my.ttlsa.com
# git clone https://github.com/box/Anemometer.git anemometer
# cd anemometer

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# cd /data/www/my.ttlsa.com # git clone https://github.com/box/Anemometer.git anemometer # cd anemometer

2. 创建表和用户名

mysql < install.sql
mysql -e "grant ALL ON slow_query_log.* to 'anemometer'@'localhost' IDENTIFIED BY 'my.ttlsa.com';"
mysql -e "grant SELECT ON *.* to 'anemometer'@'localhost' IDENTIFIED BY 'my.ttlsa.com';"

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mysql<install.sql mysql-e"grant ALL ON slow_query_log.* to 'anemometer'@'localhost' IDENTIFIED BY 'my.ttlsa.com';" mysql-e"grant SELECT ON *.* to 'anemometer'@'localhost' IDENTIFIED BY 'my.ttlsa.com';"

3. 分析MySQL慢日志

# 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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# pt-query-digest --user=anemometer --password=superSecurePass \ --reviewD=slow_query_log,t=global_query_review\ --review-historyD=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

4. 配置anemometer

# cp conf/sample.config.inc.php conf/config.inc.php
# vi conf/config.inc.php
$conf['datasources']['localhost'] = array(
'host' => 'localhost',
'port' => 3306,
'db' => 'slow_query_log',
'user' => 'anemometer',
'password' => 'my.ttlsa.com',
'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.ttlsa.com';

return $conn;
},

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# cp conf/sample.config.inc.php conf/config.inc.php # vi conf/config.inc.php $conf['datasources']['localhost']=array( 'host' =>'localhost', 'port' =>3306, 'db' =>'slow_query_log', 'user' =>'anemometer', 'password'=>'my.ttlsa.com', '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'; $conn['password']='my.ttlsa.com'; return$conn; },

5. 自动化处理

# 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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# vi /etc/logrotate.d/mysql postrotate pt-query-digest--user=anemometer--password=superSecurePass\ --reviewD=slow_query_log,t=global_query_review\ --review-historyD=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

这样就可以通过my.ttlsa.com/anemometer来访问查看慢查询了。

参考文档：
https://www.box.com/blog/optimizing-mysql-performance-at-scale-with-anemometer-2/ http://isadba.com/?p=655