华为云CentOS8安装MYSQL

yum install -y mysql-server
mysql启动

systemctl start mysqld.service
systemctl enable mysqld.service
firewall-cmd --add-port=3306/tcp --permanent
firewall-cmd --reload
登入mysql，没有密码回车就行

mysql -uroot -p //随机密码登录
设置root密码

use mysql;

ALTER USER 'root'@'localhost' IDENTIFIED BY 'Root123456!';
退出重登

#退出
exit
#重登
mysql -uroot -p
设置远程访问

use mysql;

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

FLUSH PRIVILEGES;

再次登录，输入密码

mysql -u root -p