https://blog.csdn.net/chenxijie1985/article/details/90317537
    下载 xxxx.noarch.rpm
    rpm -ivhz 安装rpm
    yum安装： yum install mysql-community-server
    启动服务： systemctl start mysqld.service
    获取默认密码： cat /var/log/mysqld.log | grep password
    修改默认密码： ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass4!'; 或者 ALTER USER 'root'@'localhost' IDENTIFIED BY RANDOM PASSWORD; （随机生成）
    修改root用户信息，允许远程访问： update user set host='%' where user='root';
    赋予主机访问权限：

    1. GRANT ALL PRIVILEGES ON *.* TO 'root'@'%'WITH GRANT OPTION;
    2. FLUSH PRIVILEGES;