关闭防火墙,selinux
[root@service ~]# systemctl stop firewalld
[root@service ~]# setenforce 0
用rpm解析网站名
[root@service ~]# rpm -ivh https://repo.mysql.com//mysql80-community-release-el9-1.noarch.rpm

浏览/etc/yum.repos.d/目录下的安装文件
[root@service ~]# ls -l /etc/yum.repos.d/

安装MySQL
[root@service ~]# dnf install mysql-server -y
出现GPG报错

使用如下命令,禁用GPG
[root@service ~]# yum -y install mysql-community-server --nogpgcheck

重启MySQL服务
[root@service ~]# systemctl start mysqld.service
查看MySQL状态
[root@service ~]# systemctl status mysqld

安装完成!