https://blog.csdn.net/m0_53721382/article/details/128943162?spm=1001.2014.3001.5501
mysql -u root -p
use mysql
select host,user from user; 注意 ; 号
update user set host='%' where user='root';
flush privileges;
mysql> grant all privileges on *.* to 'root'@'%';
mysql> ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'root_pwd'; ## 授权root远程登录 后面的root_pwd代表登录密码
mysql> flush privileges;
sudo vim /etc/mysql/mysql.conf.d/mysqld.cnf
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