Anemometer图形化显示MySQL慢日志的工具搭建及使用的实例解析

介绍：Anemometer 是一个图形化显示MySQL慢日志的工具。结合pt-query-digest，Anemometer可以很轻松的帮你去分析慢查询日志，让你很容易就能找到哪些SQL需要优化

This is the Box Anemometer, the MySQL Slow Query Monitor. This tool is used to analyze slow query logs collected from MySQL instances to identify problematic queries

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环境概况

以写此文章时 percona-toolkit最新的版本3.0.10为例
mysql数据库对应版本为5.7.21，二进制安装
http和php均是系统CentOS Linux release 7.4.1708 (Core)自带版本

需要安装的步骤如下：

1.percona-toolkit工具的安装

2.php web环境的搭建安装

3.Anemometer并配置

4.导入慢查询日志

5.访问界面，查看慢查询

6.其他相关和问题解决

0. 整体的架构

For pt-query-digest version < 2.2
$ pt-query-digest --user=anemometer --password=superSecurePass \\\\
--review h=db.example.com,D=slow_query_log,t=global_query_review \\\\
--review-history h=db.example.com,D=slow_query_log,t=global_query_review_history \\\\
--no-report --limit=0% \\\\ 
--filter=" \\\\$event->{Bytes} = length(\\\\$event->{arg}) and \\\\$event->{hostname}=\\\\"$HOSTNAME\\\\"" \\\\ 
/var/lib/mysql/db.example.com-slow.log

For pt-query-digest version >= 2.2
$ pt-query-digest --user=anemometer --password=superSecurePass \\\\
--review h=db.example.com,D=slow_query_log,t=global_query_review \\\\
--history h=db.example.com,D=slow_query_log,t=global_query_review_history \\\\
--no-report --limit=0% \\\\ 
--filter=" \\\\$event->{Bytes} = length(\\\\$event->{arg}) and \\\\$event->{hostname}=\\\\"$HOSTNAME\\\\"" \\\\ 
/var/lib/mysql/db.example.com-slow.log

2、慢查询主机推动脚本示例

#config anemometer server, the purpose is to push slow query to the remote anemometer server and store it.
anemometer_host="127.0.0.1"
anemometer_user="root"
anemometer_password="123456"
anemometer_port=5700
anemometer_db="slow_query_log"

#config mysql server, the purpose is to get the path of the slow query log.
mysql_client="/usr/local/mysql-5.7.21/bin/mysql"
mysql_user="root"
mysql_password="123456"
mysql_socket="/tmp/mysql_5700.sock"
mysql_port=5700

#config slowqury dir to cd, and then delete the expired slow query file.
slowquery_dir="/data/mysql_$mysql_port/"

#get the path of the slow query log.
slowquery_file=`$mysql_client -u$mysql_user -p$mysql_password -S $mysql_socket -e "show variables like 'slow_query_log_file'"|grep log|awk '{print $2}'`
pt_query_digest="/data/percona-toolkit-3.0.10/bin/pt-query-digest"

#collect mysql slowquery log into lepus database.
$pt_query_digest --user=$anemometer_user --password=$anemometer_password --port=$anemometer_port --review h=$anemometer_host,D=$anemometer_db,t=global_query_review --history h=$anemometer_host,D=$anemometer_db,t=global_query_review_history --no-report --limit=0% --filter=" \\\\$event->{Bytes} = length(\\\\$event->{arg}) and \\\\$event->{hostname}=\\\\"$HOSTNAME:$mysql_port\\\\"" $slowquery_file

#generate a new slow query log, the below is generate a new slow file per hour.
tmp_log=`$mysql_client -u$mysql_user -p$mysql_password -S $mysql_socket -e "select concat('$slowquery_dir','slowquery_',date_format(now(),'%Y%m%d%H'),'.log');"|grep log|sed -n -e '2p'`

#use new slow file to config mysql slowquery
$mysql_client -u$mysql_user -p$mysql_password -S $mysql_socket -e "set global slow_query_log = 0;set global slow_query_log_file = '$tmp_log';"
$mysql_client -u$mysql_user -p$mysql_password -S $mysql_socket -e "set global slow_query_log = 1; "

#delete slow query file before 2 days
cd $slowquery_dir
/usr/bin/find ./ -name 'slowquery_*.log' -mtime  2|xargs rm -rf ;

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5. 访问界面，查看慢查询

http://$ip/anemometer/ （$ip为Anemometer主机对应ip地址）

更多关于云服务器，域名注册，虚拟主机的问题，请访问西部数码官网：www.west.cn