1.yum源下载安装
https://dev.mysql.com/downloads/repo/yum/
yum localinstall -y mysql80-community-release-el7-7.noarch.rpm
yum repolist enabled | grep "mysql.*-community.*"
修改/etc/yum.repos.d/mysql-community.repo
[mysql57-community]
enabled=1
2.安装mysql
yum install -y --skip-broken mysql-community-devel-5.7.36
yum install -y --skip-broken mysql-community-server-5.7.36