一、挂载DVD光盘
mkdir /media/cdrom
mount /dev/cdrom /media/cdrom
二、配置本地YUM源
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak
vi /etc/yum.repos.d/CentOS-Media.repo
内容如下：
[c5-media]
name=CentOS-$releasever - Media
baseurl=file:///media/cdrom/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
三、测试
yum clean all //清除缓存及旧的包
yum install rsync //测试是否能安装软件
