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/rc.d/init.d/mysqld restart
# mysql -u newuser–p
Enter password:newpassword
mysql><登录成功>