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 kill
mysqladmin -uroot -p processlist|awk -F "|" '{if($3 == "Mike")print $2}'|xargs -n 1 mysqladmin -uroot -p kill
#杀掉锁定的MySQL连接 for id in `mysqladmin processlist|grep -i locked|awk '{print $1}'` do mysqladmin kill ${id} done
#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