ubuntu 系统解决mysql连接问题（ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password:

我的系统是ubuntu8.04，最近新装好的mysql在进入mysql工具时，总是有错误提示:

# mysql -uroot -p

Enter password:

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

使用网上介绍的方法修改root用户的密码：

# mysqladmin -uroot -p password 'newpassword'

Enter password:

mysqladmin: connect to server at 'localhost' failed

error: 'Access denied for user 'root'@'localhost' (using password: YES)'

现在终于被我找到了解决方法：

切换到root用户，然后进入mysql 的bin目录后，

root@cps-desktop:/usr/local/mysql/bin# /etc/init.d/mysql stop

root@cps-desktop:/usr/local/mysql/bin# ./mysqld_safe --user=mysql --skip-grant-tables --skip-networking &

root@cps-desktop:/usr/local/mysql/bin# ./mysql -u root mysql

mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root';

mysql> FLUSH PRIVILEGES;

mysql> quit;

最后重启数据库：

root@cps-desktop:/usr/local/mysql/bin# /etc/init.d/mysql restart

root@cps-desktop:/usr/local/mysql/bin# mysql -u root -p

Enter password: <输入新设的密码newpassword>