Zut, j'ai oublié mon mot de passe root pour MySQL.

root@plop:~# /etc/init.d/mysql stop
root@plop:~# mysqld --skip-grant-tables
root@plop:~# mysql mysql
mysql> update user set password=PASSWORD("XXXXXXX") where user='root';
root@plop:~# killall -15 mysqld
root@plop:~# /etc/init.d/mysql start