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| 关键词： password MYSQL user 协议 client 认证 OLD use 4.1 host |
来源：LinuxAid MYSQL 4.1以后, 采用了一种新的用户认证协议, 对于老的客户端会出现不支持认证协议的错误, 以下是官方网站的解决方法 r １Upgrade all client programs to use a 4.1.1 or newer client library. 更新客户端库，这需要更新ＰＨＰ的扩展库，对于老的ａｐｉ ＰＨＰ已经不提供了这样的扩展库了 ２When connecting to the server with a pre-4.1 client program, use an account that still has a pre-4.1-style password. 使用以前建立的账号连接，对于在新的认证协议下建立的账户就不行了 ３Reset the password to pre-4.1 style for each user that needs to use a pre-4.1 client program. This can be done using the SET PASSWORD statement and the OLD_PASSWORD() function: mysql> SET PASSWORD FOR -> 'some_user'@'some_host' = OLD_PASSWORD('newpwd'); Alternatively, use UPDATE and FLUSH PRIVILEGES: mysql> UPDATE mysql.user SET Password = OLD_PASSWORD('newpwd') -> WHERE Host = 'some_host' AND User = 'some_user'; mysql> FLUSH PRIVILEGES; Substitute the password you want to use for ``newpwd'' in the preceding examples. MySQL cannot tell you what the original password was, so you'll need to pick a new one. 这是一个不错的办法，新建立的账号采用老式的加密协议 ４Tell the server to use the older password hashing algorithm: Start mysqld with the --old-passwords option. 这样新认证协议的优点就没法使用了 ５Assign an old-format password to each account that has had its password updated to the longer 4.1 format. You can identify these accounts with the following query: mysql> SELECT Host, User, Password FROM mysql.user -> WHERE LENGTH(Password) > 16; For each account record displayed by the query, use the Host and User values and assign a password using the OLD_PASSWORD() function and either SET PASSWORD or UPDATE, as described earlier. 恢复已经升级了口令到老样式 本文参照了 http://dev.mysql.com/doc/mysql/en/Old_client.html |
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