mysql “Host is blocked because of many connection errors”
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1.提高允许的max_connection_errors数量,首先查看该属性设置为多大
命令:show global variables like '%max_connect_errors%';
2.当客户端连接服务端超时(超过connect_timeout), 服务端就会给这个客户端记录一次error,当出错的次数达到max_connect_errors的时候,这个客户端就会被锁定。所以根据业务来尽量把这个值设置大一点,mysql默认值为10,我们可以根据具体需要设置大一点,这里设置为1000.(并非越大越好,越大被攻击时安全性越低)。使用命令:set global max_connect_errors=1000;
3.设置后立马生效。这里我们可以查看一下,是否修改成功,使用命令:show global variables like '%max_connect_errors%';
4.到这一步,就解决了问题了。如果需要永久生效,得去修改mysql配置文件里相应属性。可能配置文件里没有这个属性,需要自己手动添加
6.
也可以使用清楚缓存的方法。这样就会把计数清理掉。
命里一,到安装bin目录下,使用mysqladmin -u root -p flush-hosts命里
输入密码后,即完成清楚缓存。
7.
也可以进入mysql控制台,执行:flush hosts;
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