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MySQL连接数导致的不能正常连接数据库解决方案
当某个客户端因为频繁尝试连接 MySQL 服务器失败,导致其主机被服务器列入临时封禁名单时,执行 FLUSH HOSTS 可以清理这个缓存。MySQL 会出于安全考量,限制短时间内频繁出现连接错误的主机访问,以防止恶意攻击,例如暴力破解密码的行为。正常的客户端如果遭遇误判,管理员就可以用这条命令来恢复其连接权限。
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