连接数据库出现 ------------------------------------------------------------------------------------------- Client does not support authentication protocol requested by server; consider upgrading MySQL client ------------------------------------------------------------------------------------------- 由于MySQL 4.1版本开始密码的hash算法改变，所以连接数据库 时可能会出现Client does not support authentication protocol问题。
可以通过一下两种方法解决 其一: mysql> SET PASSWORD FOR -> 'some_user'@'some_host' = OLD_PASSWORD('newpwd');
其二: mysql> UPDATE mysql.user SET Password = OLD_PASSWORD('newpwd') -> WHERE Host = 'some_host' AND User = 'some_user'; mysql> FLUSH PRIVILEGES;