1、安装httpd
yum -y install httpd
systemctl start httpd
systemctl enable httpd
2、镜像资源目录拷贝至http的网站根目录 /var/www/html/
/var/www/html/centos7.2
/var/www/html/centos7.4
3、使用该yum仓库
/etc/yum.repo.d/centos.repo
[http]
name=http_centos7.2
baseurl=http://172.16.22.110/centos7.2
gpgcheck=0
enabled=1