mysql增加普通用户后无法登陆问题的解决方法

mysql> CREATE USER yy IDENTIFIED BY '123';
mysql> CREATE USER ​​yy@localhost​​ IDENTIFIED BY '123';
grant select,insert,update,delete on *.* to test1@"%" Identified by "abc";

但使用用户登陆失败：

root@controller:~# mysql -h localhost -ukeystone -ppassword
 ERROR 1045 (28000): Access denied for user 'keystone'@'localhost' (using password: YES)

解决方法：

增加普通用户后，执行：

mysql> use mysql

mysql> delete from user where user='';

mysql> flush privileges;

意思是删除匿名用户。

OK，搞定，enjoy！