Client does not support authentication protocol

核心提示：Client does not support authentication protocol MySQL(和PHP搭配之最佳组合) 4.1 and up uses an authentication protocol based on a password hashing algorithm that is inco

Client does not support authentication protocol 

MySQL(和PHP搭配之最佳组合) 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(和PHP搭配之最佳组合)Client does not support authentication protocol requestedby server; consider upgrading MySQL(和PHP搭配之最佳组合) 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(和PHP搭配之最佳组合)> SET PASSWORD FOR    -> 'some_user'@'some_host' = OLD_PASSWORD('newpwd');

  Alternatively, use UPDATE and FLUSH PRIVILEGES: