[解决] Error Code: 1044. Access denied for user 'root'@'%' to database

一、创建数据库用户

命令:CREATE USER 'username'@'host' IDENTIFIED BY 'password';

说明：
username：你将创建的用户名
host：指定该用户在哪个主机上可以登陆，如果是本地用户可用localhost，如果想让该用户可以从任意远程主机登陆，可以使用通配符%
password：该用户的登陆密码，密码可以为空，如果为空则该用户可以不需要密码登陆服务器
例子：

CREATE USER 'username'@'host' IDENTIFIED BY 'password';

CREATE USER 'dog'@'localhost' IDENTIFIED BY '123456';
CREATE USER 'pig'@'192.168.1.101_' IDENDIFIED BY '123456';
CREATE USER 'pig'@'%' IDENTIFIED BY '123456';
CREATE USER 'pig'@'%' IDENTIFIED BY '';
CREATE USER 'pig'@'%';

二. 授权:

命令:GRANT privileges ON databasename.tablename TO 'username'@'host'

说明:
privileges：用户的操作权限，如SELECT，INSERT，UPDATE等，如果要授予所的权限则使用ALL
databasename：数据库名
tablename：表名，如果要授予该用户对所有数据库和表的相应操作权限则可用*表示，如*.*
例子:
GRANT SELECT, INSERT ON test.user TO 'pig'@'%';
GRANT ALL ON *.* TO 'pig'@'%';
GRANT ALL ON maindataplus.* TO 'pig'@'%';
注意:
用以上命令授权的用户不能给其它用户授权，如果想让该用户可以授权，用以下命令:
GRANT privileges ON databasename.tablename TO 'username'@'host' WITH GRANT OPTION;

我是以root用户登录mysql的，怎么还会遇到这问题呢，有点猫腻，我查看了下mysql下user表的各用户的权限信息

MariaDB [(none)]> SELECT host,user,password,Grant_priv,Super_priv FROM mysql.user;
+-----------+--------------+-------------------------------------------+------------+------------+
| host      | user         | password                                  | Grant_priv | Super_priv |
+-----------+--------------+-------------------------------------------+------------+------------+
| localhost | root         | *0B42D92AC77455330A27220D61D24E3BC5740CCF | N          | N          |
| 127.0.0.1 | root         | *0B42D92AC77455330A27220D61D24E3BC5740CCF | Y          | Y          |
| ::1       | root         | *0B42D92AC77455330A27220D61D24E3BC5740CCF | Y          | Y          |
| %         | root         | *0B42D92AC77455330A27220D61D24E3BC5740CCF | Y          | Y          |
| %         | cloudcon-api | *6A10AB79A4E1F6E732940B18612AF3C7A1F1528E | Y          | Y          |
| localhost | cloudcon     | *5C16B0FAA9461AFF9D78785B71A86ECD0D1583D2 | Y          | Y          |
+-----------+--------------+-------------------------------------------+------------+------------+
6 rows in set (0.00 sec)

可以看到授权的权限没有打开： Grant_priv is set to N for root@%. 修复下

UPDATE mysql.user SET Grant_priv='Y', Super_priv='Y' WHERE User='root';
FLUSH PRIVILEGES;

重新登录下，就ok了。如果不能执行update的话，那就先停下mysql服务，然后mysqld_safe --skip-grant-table &

[解决] Error Code: 1044. Access denied for user 'root'@'%' to database

猜你喜欢