MySQL :Host 'XXXXXX' is blocked because of many connection errors;

MySQL :Host 'XXXXXX' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'

解决方法：
1、set global max_connect_errors=1000; --可以动态修改

当这一客户端成功连接一次MySQL服务器后，针对此客户端的max_connect_errors会清零。

2、 mysqladmin flush-hosts 或者 mysql>flush hosts;