mysql 8 设置允许远程连接 You are not allowed to create a user with GRANT

2021/10/7 19:14:33

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1.登录mysql : mysql -u root -p

2.输入密码: Enter password: xxxxx

------ Server version: 8.0.15 MySQL Community Server - GPL

3.进入mysql数据库:use mysql;

4.设置允许远程用户访问:

MySQL [mysql]> GRANT ALL ON *.* TO 'root'@'%'

出现问题:ERROR 1410 (42000): You are not allowed to create a user with GRANT

原因:当前user表中没有root - %记录; 可以更新root - localhost 为 root - %

 

 

MySQL [mysql]> update user set host = '%' where user = 'root';
出现问题:ERROR 1062 (23000): Duplicate entry '%-root' for key 'PRIMARY'

原因显示:host+user 应该是联合主键,冲突了

5.解决方法:

MySQL [mysql]> update user set host = '%' where user = 'root' and host='localhost';

 

 

6.再次给用户root授权

MySQL [mysql]> GRANT ALL ON *.* TO 'root'@'%'

MySQL [mysql]> flush privileges;

 

 

此时用navicat连接还是报错:Client does not support authentication protocol requested by server;

原因是mysql8默认的加密方式为caching_sha2_password 与mysql5的加密方式mysql_native_password 不同

7.解决方法-更新用户加密方式:

MySQL [mysql]> ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '密码';

查询一下修改结果:MySQL [mysql]> select host,user,plugin from user;

 

 

其它:如果需要支持 root - localhost可以使用插入语句

MySQL [mysql]> insert user (user, host, ssl_cipher, x509_issuer, x509_subject) values('root', 'localhost', '', '', '');

再查看:(注意 ssl_cipher, x509_issuer, x509_subject这几个字段没有默认值,不设置会提示错误)


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版权声明:本文为CSDN博主「星梦天河」的原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接及本声明。
原文链接:https://blog.csdn.net/mxskymx/article/details/88765072



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