解决mysql“Access denied for user 'root'@'localhost'”

首先 #ps -ef|grep mysql

然后kill -9 进程

接着到mysql 的bin目录下

# mysqld_safe --user=mysql --skip-grant-tables &
# mysql -u root mysql

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

然后：

# /etc/init.d/mysql restart
# mysql -uroot -p
Enter password: <输入新设的密码newpassword>