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

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

原因：同一个ip在短时间内产生太多（超过mysql数据库max_connection_errors的最大值）中断的数据库连接而导致的阻塞；

解决方法：

进入到数据库中 执行下面的命令

flush hosts；

原文：https://blog.youkuaiyun.com/kai_wei/article/details/53582811