Mysql数据库出现many connection errors错误的解决

 在上班的时间发现opensips服务器连接上不去了，查看错误日志时报下列错误

Jun 24 10:23:26 bj-opensips-x86v-app01 /sbin/opensips[7115]: ERROR:db_mysql:db_mysql_connect: driver error(1129): Host 'bj-opensips-x86v-app01.clvn.com.cn' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'

 解决方法如下：

登录数据库

[root@web ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 71
Server version: 5.1.73 Source distribution

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

查看max_connect_errors参数的值

mysql> show variables like '%max_connect_errors%';
+--------------------+-------+
| Variable_name      | Value |
+--------------------+-------+
| max_connect_errors | 10    |
+--------------------+-------+
1 row in set (0.00 sec)

修改该参数的值

mysql> set global max_connect_errors=1000;
Query OK, 0 rows affected (0.00 sec)

 查看是否修改成功

mysql> show variables like '%max_connect_errors%';
+--------------------+-------+
| Variable_name      | Value |
+--------------------+-------+
| max_connect_errors | 1000  |
+--------------------+-------+
1 row in set (0.00 sec)