搭建yum仓库

mkdir myrom
mount /dev/cdrom myrom
cd myrom/Packages
cp /etc/yum.repos.d/rhel-source.repo /etc/yum.repos.d/rhel-server.repo
vim /etc/yum.repos.d/rhel-server.repo
[rhel-server]
name=Server
baseurl=file:///myrom
enable=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
最后用yum repolist测试（也可以先yum clean all）