CentOS 命令登录MySQL时，报错ERROR 1045 (28000): Access denied for user root@localhost (using password: NO)错误解决方法

1、停用mysql服务：

/etc/rc.d/init.d/mysqld stop

2、输入命令：# mysqld_safe --user=mysql --skip-grant-tables --skip-networking &

3、登入数据库：

mysql -u root mysql

4、mysql> use mysql; 结果如下： Database changed

5、mysql> UPDATE user SET Password=PASSWORD('newpassword')where USER='newuser'; 结果如下： Query OK, 3 rows affected (0.00 sec) Rows matched: 3 Changed: 3 Warnings: 0

mysql>FLUSH PRIVILEGES; 结果如下： Query OK, 0 rows affected (0.00 sec) mysql> quit

/etc/init.d/mysql restart

mysql -u newuser –p

Enter password:newpassword mysql><

登录成功