Client does not support authentication protocol

最新推荐文章于 2025-06-05 22:00:52 发布

最新推荐文章于 2025-06-05 22:00:52 发布 · 120 阅读

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#数据库

本文介绍了解决MySQL4.1及以上版本与旧客户端因密码哈希算法不同导致的认证协议不兼容问题的方法。提供了升级客户端、使用预4.1风格密码的账户或重置为预4.1风格密码等解决方案。

Client does not support authentication protocol

MySQL 4.1 and up uses an authentication protocol based on a password hashing algorithm that is incompatible with that used by older clients. If you upgrade the server to 4.1, attempts to connect to it with an older client may fail with the following message:

shell> mysql
Client does not support authentication protocol requested
by server; consider upgrading MySQL client

To solve this problem, you should use one of the following approaches:

Upgrade all client programs to use a 4.1.1 or newer client library.
When connecting to the server with a pre-4.1 client program, use an account that still has a pre-4.1-style password.
Reset 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: