mysql8.0.15用户root登录开启远程访问权限

梦里梦外; 2022-03-01 05:24 603阅读 0赞

接上篇，在服务器上装完mysql8.0.15后，想通过本地的sqlyog工具连接，用户root,初始密码都正确

但是在本地依然报错：

> error no. 1045 access denied for user 'root'@'\*\*\*\*\*' (using password:YES)

注：初始密码的方法：[https://blog.csdn.net/liliuqing/article/details/88721881][https_blog.csdn.net_liliuqing_article_details_88721881]

原来： MySql-Server 出于安全方面考虑默认只允许本机(localhost, 127.0.0.1)来连接访问.

那么必须给root修改远程访问权限！步骤如下：

1.在服务器端定位到**D:\\server\\mysql-8.0.15-winx64\\bin,**打开dos窗口，输入命令：

mysql -u root -p

(注：root表示登录的用户)

2.出现让输入密码，输入密码后回车，登录成功后，出现

E:\opt\mysql\mysql-8.0.15-winx64\bin>mysql -uroot -p
    Enter password: ************
    Welcome to the MySQL monitor.  Commands end with ; or \g.
    Your MySQL connection id is 11
    Server version: 8.0.15
    
    Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
    
    Oracle is a registered trademark of Oracle Corporation and/or its
    affiliates. Other names may be trademarks of their respective
    owners.
    
    Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

3.继续输入：use mysql，出现错误，如下：

mysql> use mysql
    ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.

那么需要更改用户密码，输入命令：

> alter user 'root'@'localhost' identified with mysql\_native\_password by 'amp';

结果如下：

mysql> alter user 'root'@'localhost' identified with mysql_native_password by 'amp';
    Query OK, 0 rows affected (0.01 sec)

注：在mysql8版本中更改用户密码需要加入with mysql\_native\_password，并且要加入;所以一下两种写法都是不对的。  
alter user 'root'@'localhost' identified by 'amp';  
alter user 'root'@'localhost' identified with mysql\_native\_password by 'amp'

最后要输入flush privileges,刷新数据库。否则会保留在缓存中。结果如下：

mysql> flush privileges;
    Query OK, 0 rows affected (0.00 sec)

4.继续输入命令：

> use mysql

> select host,user from user;

结果如下：

果然，发现root用户的访问权限是localhost,需要修改host为%，输入命令：

> update user set host='%' where user='root';

> flush privileges;

结果如下:

解决OK，远程登录开启成功。

[https_blog.csdn.net_liliuqing_article_details_88721881]: https://blog.csdn.net/liliuqing/article/details/88721881