关于Mysql查看某个ip连接数及删除掉这个ip连接的方法

统计mysql各ip的连接总数：

mysql> select SUBSTRING_INDEX(host,‘:‘,1) as ip , count(*) from information_schema.processlist group by ip;

状态如下：

+----------------+----------+
| ip             | count(*) |
+----------------+----------+
|                |        3 | 
| 10.182.41.191  |        1 | 
| 10.190.249.204 |        1 | 
| 10.204.161.60  |       10 | 
| localhost      |        1 | 
+----------------+----------+

如ip10.190.249.204有一个进程正在连接mysql，我们要将其杀掉。

注：还有其他方法来查看mysql各ip连接总数，如在linux上通过mysql命令远程查看其状态。

mysql -u root -h127.0.0.1 -e "show processlist\G;"| egrep "Host\:" | awk -F: ‘{ print $2 }‘| sort | uniq -c

或

mysql -u root -h127.0.0.1 --skip-column-names -e "show processlist;"|awk ‘{print $3}‘|awk -F":" ‘{print $1}‘|sort|uniq –c

使用如下命令具体查看此ip的具体连接状态:

mysql> show full  processlist;

状态如下：

+--------+-----------------+----------------------+-----------------+-------------+----------+-----------------------------------------------------------------------+------------------------+
| Id     | User            | Host                 | db              | Command     | Time     | State                                                                 | Info                   |
+--------+-----------------+----------------------+-----------------+-------------+----------+-----------------------------------------------------------------------+------------------------+
|      1 | event_scheduler | localhost            | NULL            | Daemon      | 16664843 | Waiting on empty queue                                                | NULL                   | 
|      3 | tencentroot     | :34481               | NULL            | Sleep       |        5 |                                                                       | NULL                   | 
|     33 | tencentroot     | :38939               | NULL            | Binlog Dump | 16663717 | Master has sent all binlog to slave; waiting for binlog to be updated | NULL                   | 
| 460426 | tencentroot     | :45751               | NULL            | Sleep       |        2 |                                                                       | NULL                   | 
| 573982 | root            | 10.190.249.204:41661 | db_gfxy_gdb_239 | Sleep       |       24 |                                                                       | NULL                   | 
| 594340 | root            | 10.204.161.60:40129  | db_gfxy_gdb_239 | Sleep       |        6 |                                                                       | NULL                   | 
| 594341 | root            | 10.204.161.60:40130  | db_gfxy_gdb_239 | Sleep       |        7 |                                                                       | NULL                   | 
| 594342 | root            | 10.204.161.60:40131  | db_gfxy_gdb_239 | Sleep       |        6 |                                                                       | NULL                   | 
| 594343 | root            | 10.204.161.60:40132  | db_gfxy_gdb_239 | Sleep       |        6 |                                                                       | NULL                   | 
| 594344 | root            | 10.204.161.60:40133  | db_gfxy_gdb_239 | Sleep       |        6 |                                                                       | NULL                   | 
| 594345 | root            | 10.204.161.60:40134  | db_gfxy_gdb_239 | Sleep       |        6 |                                                                       | NULL                   | 
| 594346 | root            | 10.204.161.60:40135  | db_gfxy_gdb_239 | Sleep       |        6 |                                                                       | NULL                   | 
| 594347 | root            | 10.204.161.60:40136  | db_gfxy_gdb_239 | Sleep       |        6 |                                                                       | NULL                   | 
| 594348 | root            | 10.204.161.60:40137  | db_gfxy_gdb_239 | Sleep       |        6 |                                                                       | NULL                   | 
| 594349 | root            | 10.204.161.60:40138  | db_gfxy_gdb_239 | Sleep       |        6 |                                                                       | NULL                   | 
| 594402 | root            | 10.182.41.191:55110  | mysql           | Query       |        0 | NULL                                                                  | show full  processlist |

Ip:10.190.249.204对应的id为573982，直接杀掉其id:

mysql> kill 573982;

即杀掉10.190.249.204的连接。

时间： 2024-10-12 05:03:46

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