yum源服务器 地址  192.168.89.100/24

root@yum-server：yum install httpd

root@yum-server:systemctl enable --now httpd

root@yum-server  :mkdir /var/www/html/centos/8 -pv

root@yum-server:mount /dev/sr0 /mnt/

root@yum-server:cp -a /mnt/* /var/www/html/centos/8

root@yum-server:dnf reposync   --repoid=extras  --download-metadata   -p  /var/www/html/centos

yum客户端配置

root@yum-client:vim /etc/yum.repos.d/test.repo

[BaseOS]

name=BaseOS

centos8创建局域网的私有yum源