ERROR 1045 (28000): Access denied for user

MySQL中出现连接错误: ERROR 1045 (28000): Access denied for user ---------------------------------------------------------------------------------- 1.添加用户 shellmysql mysqluse mysql mysqlgrant all privileges on *.* to 'test' identified b

MySQL中出现连接错误:

ERROR 1045 (28000): Access denied for user

----------------------------------------------------------------------------------

1.添加用户

shell>mysql

mysql>use mysql

mysql>grant all privileges on *.* to 'test' identified by 'test' with grant option;

mysql>flush privileges;

[也可以使用下面两种方式建立用户]

------------------------

$1直接操作mysql.user这张表;

$2使用DDL语言,
定义用户:create user test identified by 'test';

删除用户:drop user test

------------------------

2.使用test登录(总是无法连接)

shell>mysql -u test -p

ERROR 1045 (28000): Access denied for user 'test'@'localhost' (using password: YES)

3.查看user表,我们会发现user表中的user字段有NULL

mysql> select host,user from user;
+------------------+------+
| host | user |
+------------------+------+
| % | test |
| localhost | |
| localhost | root |
| test.saeg.com.cn | |
| test.saeg.com.cn | root |
+------------------+------+
5 rows in set (0.00 sec)

4.删除user.user中值为NULL的,或更新NULL为test

4.1)delete from user where user is NULL

4.2)update user set user='test' where user is NULL

问题解决

另:[我的系统是RHEL4.0]

1.mysql的配置文件my-*.cnf

/usr/local/mysql/

2.初始化数据库

/usr/bin/mysql_install_db