一，下载仓库包

 wget -i -c https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm

二，安装仓库

yum -y install mysql80-community-release-el7-3.noarch.rpm

sed -i 's/gpgcheck=1/gpgcheck=0/g' mysql-community.repo

三，安装MYSQL80

yum install -y mysql-community-{server,client,common,libs}-*

四，开启数据库并设置开启自启动

systemctl start mysqld

systemctl enable mysqld

五，找寻初始密码

grep 'password' /var/log/mysqld.log

六，登录数据库

mysql -uroot -p

 七，修改密码

alter user 'root'@'localhost' iedntified by 'your password';