批量 kill mysql 中运行时间长的sql

1、通过information_schema.processlist表中的连接信息生成需要处理掉的MySQL连接的语句临时文件,然后执行临时文件中生成的指令

复制代码
mysql> select concat('KILL ',id,';') from information_schema.processlist where user='root';
+------------------------+
| concat('KILL ',id,';') 
+------------------------+
| KILL 3101;             
| KILL 2946;             
+------------------------+
2 rows in set (0.00 sec)
 
mysql>select concat('KILL ',id,';') from information_schema.processlist where user='root' into outfile '/tmp/a.txt';
Query OK, 2 rows affected (0.00 sec)
 
mysql>source /tmp/a.txt;
Query OK, 0 rows affected (0.00 sec)
复制代码

 

2、

  杀掉当前所有的MySQL连接

mysqladmin -uroot -p processlist|awk -F "|" '{print $2}'|xargs -n 1 mysqladmin -uroot -p kill

  杀掉指定用户运行的连接,这里为Mike

mysqladmin -uroot -p processlist|awk -F "|" '{if($3 == "Mike")print $2}'|xargs -n 1 mysqladmin -uroot -p kill

 

3、通过SHEL脚本实现

#杀掉锁定的MySQL连接
for id in `mysqladmin processlist|grep -i locked|awk '{print $1}'`
do
   mysqladmin kill ${id}
done

 

4、通过Maatkit工具集中提供的mk-kill命令进行

#杀掉超过60秒的sql
mk-kill -busy-time 60 -kill
#如果你想先不杀,先看看有哪些sql运行超过60秒
mk-kill -busy-time 60 -print
#如果你想杀掉,同时输出杀掉了哪些进程
mk-kill -busy-time 60 -print –kill

  mk-kill更多用法可参考:
  http://www.maatkit.org/doc/mk-kill.html
  http://www.sbear.cn/archives/426
  Maatkit工具集的其它用法可参考:
  http://code.google.com/p/maatkit/wiki/TableOfContents?tm=6
  参考文档:
  http://www.google.com
  http://www.orczhou.com/index.php/2010/10/kill-mysql-connectio-in-batch/
  http://www.mysqlperformanceblog.com/2009/05/21/mass-killing-of-mysql-connections/

 

posted @ 2016-11-09 17:01  archoncap  阅读(708)  评论(0编辑  收藏  举报