Host is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'
2016-08-06 22:01
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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:1、提高允许的max_connection_errors数量(治标不治本): ① 进入Mysql数据库查看max_connection_errors: show variables like '%max_connection_errors%'; ② 修改max_connection_errors的数量为1000: set global max_connect_errors = 1000; ③ 查看是否修改成功:show variables like '%max_connection_errors%';2、使用mysqladmin flush-hosts 命令清理一下hosts文件(不知道mysqladmin在哪个目录下可以使用命令查找:whereis mysqladmin); ① 在查找到的目录下使用命令修改:/usr/bin/mysqladmin flush-hosts -h192.168.1.1 -P3308 -uroot -prootpwd; mysqladmin -u root -p flush-hosts 备注: 其中端口号,用户名,密码都可以根据需要来添加和修改; 配置有master/slave主从数据库的要把主库和从库都修改一遍的(我就吃了这个亏明明很容易的几条命令结果折腾了大半天); 第二步也可以在数据库中进行,命令如下:flush hosts;
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