使用“GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'root' WITH GRANT OPTION;”命令可以更改远程连接的设置。
使用“flush privileges;”命令刷新刚才修改的权限,使其生效。
使用“select host,user from user;”查看修改是否成功。
参考技术A1、root用户登录到mysql数据库 代码示例: /usr/local/mysql/bin/mysql -u root -p (输入密码进入mysql) 2、进入mysql,输入: 代码示例: use mysql; 3、查看user表的情况 代码示例: SELECT Host,User FROM user; //指明主机名称,“%”表示匹配所有字符串 4、 代码示例: UPDATE user SET Host = '%' WHERE User= 'root' LIMIT 1; 5、输入如下命令让刚才设置的命令生效 代码示例: mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) 注意,在mysql 命令行形式下一定要输入";" 按照前面五个步骤完成之后,通过控制台输入: 代码示例: [root@linux ~]# mysql -h localhost -u root -p Enter password: ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES) 不让这么连接数据库
原因:是因为host对应的user字段是空的,我们需要将其改为root即可
代码示例: mysql> select host,user from user; +-----------+------+ | host | user | +-----------+------+ | % | root | | 127.0.0.1 | root | | linux | | | linux | root | | localhost | | +-----------+------+ 5 rows in set (0.00 sec)
解决办法一:
代码示例: mysql> update user set user='root' where host='localhost'; Query OK, 1 row affected (0.00 sec) Rows matched: 1 Changed: 1 Warnings: 0
mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) 解决办法二: 将localhost改为本机的IP地址,则能够识别了。 代码示例: [root@linux ~]# mysql -h 172.16.42.68 -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 157 Server version: 5.1.66 Source distribution
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