1. 拉取安装文件

    rpm -Uvh https://repo.mysql.com/mysql57-community-release-el7-11.noarch.rpm

    1. 启动mysql

    yum —enablerepo=mysql80-community install mysql-community-server
    service mysqld start

    1. 查看默认密码：

    grep “A temporary password” /var/log/mysqld.log
    修改密码：
    set global validate_password.policy=0;
    set global validate_password.length=4;
    alter user ‘root’@’localhost’ identified by “123456”;

    开启远程连接：
    阿里云网站先把防火墙打开3306，33060端口。
    mysql -u root -p
    mysql>use mysql;
    mysql>update user set host = ‘%’ where user = ‘root’;
    mysql> flush privileges;