MySQL5.7 Unable to find a match: MySQL-community-server
[root@iZ2ze132wo6qz9tgo8q6nwZ /]# yum install mysql-community-server Last metadata expiration check: 0:00:50 ago on Thu 02 Jul 2020 09:30:54 AM CST. All matches were filtered out by modular filtering for argument: mysql-community-server Error: Unable to find a match: mysql-community-server解决办法：
先执行：yum module disable mysql
再执行：yum install mysql-community-server配张图有理有据：
