批量杀死 MySQL 连接的几种方法

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)

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