Client does not support authentication protocol requested by server

$ rake db:migrate
(in /home/y_ando/products/shot_chat)
rake aborted!
Client does not support authentication protocol requested by server; consider upgrading MySQL client

(See full trace by running task with --trace)

mysqlが古くて、rake db:migrateしたときに上のようなメッセージが出たら、次のようにする。

$ mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 187
Server version: 5.0.32-Debian_7-log Debian etch distribution

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> update user set Password = OLD_PASSWORD('password') where Host = 'localhost' AND User = 'user';
Query OK, 1 row affected (0.12 sec)
Rows matched: 1  Changed: 1  Warnings: 0

mysql> flush privileges;
Query OK, 0 rows affected (0.02 sec)