Unblock with 'mysqladmin flush-hosts'

Host 'hostname' is blocked because of many connection errors.

Unblock with 'mysqladmin flush-hosts'

  这意味着,mysqld已经得到了大量(max_connect_errors)的主机'hostname'的在中途被中断了的连接请求。在max_connect_errors次失败请求后,mysqld认定出错了(象来字一个黑客的攻击),并且阻止该站点进一步的连接,直到某人执行命令mysqladmin flush-hosts。

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