1.ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'mysql'
1.关闭mysql
service mysqld stop
或者
/etc/init.d/mysql stop
2.屏蔽权限
mysqld_safe --skip-grant-table
屏幕出现： Starting demo from .....
3.新开起一个终端输入
mysql -u root mysql
mysql> delete from user where USER='';mysql> FLUSH PRIVILEGES;mysql> \q
4.关闭所有终端，重启或者开启mysql。
1.关闭mysql
service mysqld stop
2.屏蔽权限
mysqld_safe --skip-grant-table
屏幕出现： Starting demo from .....
3.新开起一个终端输入
mysql -u root mysql
mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root';mysql> FLUSH PRIVILEGES;mysql> \q
2.localhost没有映射到127.0.0.1？试试#mysql -u root -p xxxx -h 127.0.0.1
grant all privileges on *.* to 'root'@'localhost' identified by '123456' with grant option;//允许localhost（本机）利用用户名为root；密码为123456的方式连接本机
文章来源: linx下mysql