方法一
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。
|
- 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)
方法二
杀掉当前所有的MySQL连接
- mysqladmin -uroot -p processlist|awk -F "|" '{print $2}'|xargs -n 1 mysqladmin -uroot -p
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
方法三
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
方法四
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/
本文转自 geekwolf 51CTO博客,原文链接:http://blog.51cto.com/linuxgeek/998201