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
# 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
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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';"
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';"
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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}=\"$HOSTNAME\"" /data/log/mysql/slow.log
--review D=slow_query_log,t=global_query_review \
--review-history D=slow_query_log,t=global_query_review_history \
--no-report --limit=0% --filter=" \$event->{Bytes} = length(\$event->{arg}) and \$event->{hostname}=\"$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
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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'
);
# 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;
},
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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}=\"$HOSTNAME\"" /data/log/mysql/slow.log.1
endscript
postrotate
pt-query-digest --user=anemometer --password=superSecurePass \
--review D=slow_query_log,t=global_query_review \
--review-history D=slow_query_log,t=global_query_review_history \
--no-report --limit=0% --filter=" \$event->{Bytes} = length(\$event->{arg}) and \$event->{hostname}=\"$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
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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