ERROR 1129 (HY000): Host '192.168.13.251' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'

ERROR 1129 (HY000): Host '192.168.13.251' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' 这个错误意味着由于该主机在短时间内产生了太多中断的数据库连接，导致其被阻塞了。要解除阻塞，可以使用'mysqladmin flush-hosts'命令。这个命令将清除hosts文件中的阻塞记录，使该主机能够重新连接到MySQL数据库。此外，您还可以通过提高max_connection_errors的数量来解决这个问题，这个变量定义了在一定时间内允许的最大中断连接数。您可以使用以下步骤来提高max_connection_errors的数量：
1. 使用root用户登录MySQL：mysql -u root -p
2. 查看当前的max_connection_errors数量：show variables like "max_connection_errors";
3. 修改max_connection_errors的数量为1000（或其他适当的值）：set global max_connect_errors = 1000;
4. 修改max_connections的数量为1000（或其他适当的值）：set global max_connections = 1000;
5. 最后，使用命令mysql> flush-hosts;来清理hosts文件中的阻塞记录。
这些步骤将帮助您解除该主机的阻塞并重新连接到MySQL数据库。请注意，这些步骤只是暂时解决问题的方法，治标不治本。为了避免这种情况再次发生，您可能需要调查并解决导致大量中断连接的根本原因。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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