1，進入/etc/yum.repos.d目錄中，編輯rhel5-local.repo文件，這個文件名可以隨便取，以個人愛好為準，加入如下內容：
[Cluster]
name=Red Hat Enterprise Linux $releasever - $basearch -Cluster
baseurl=file:///mnt/rhel5/Cluster
enable=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
[ClusterStorage]
name=Red Hat Enterprise Linux $releasever - $basearch -ClusterStorage
baseurl=file:///mnt/rhel5/ClusterStorage
enable=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
[Server]
name=Red Hat Enterprise Linux $releasever - $basearch -Server
baseurl=file:///mnt/rhel5/Server
enable=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
[VT]
name=Red Hat Enterprise Linux $releasever - $basearch -VT
baseurl=file:///mnt/rhel5/VT
enable=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
2，掛載你的rhel5.iso文件.
?? mount /dev/hdc /mnt/rhel5
我是在vmware里做的，它的光驅就是/dev/hdc設備。
3，創建以下幾個必要的目錄：
mkdir -p /var/rhel/{Cluster,ClusterStorage,Server,VT}
4，用createrepo命令創建相應文件，前提你必須安裝createrepo軟件包：
createrepo -o /var/rhel/Cluster -g????? /mnt/rhel5/Cluster/repodata/comps-rhel5-cluster.xml? /mnt/rhel5/Cluster
createrepo -o /var/rhel/ClusterStorage -g????? /mnt/rhel5/ClusterStorage/repodata/comps-rhel5-cluster-st.xml??? /mnt/rhel5/ClusterStorage
createrepo -o /var/rhel/Server -g?? /mnt/rhel5/Server/repodata/comps-rhel5-server-core.xml? /mnt/rhel5/Server
createrepo -o /var/rhel/VT -g? /mnt/rhel5/VT/repodata/comps-rhel5-VT.xml???? /mnt/rhel5/VT
5，掛載：
mount --bind? /var/rhel/Cluster/repodata? /mnt/rhel5/Cluster/repodata
mount --bind? /var/rhel/ClusterStorage/repodata? /mnt/rhel5/ClusterStorage/repodata
mount --bind? /var/rhel/Server/repodata? /mnt/rhel5/Server/repodata
mount --bind? /var/rhel/VT/repodata? /mnt/rhel5/VT/repodata
6，yum clean all
剩下的就是安裝軟件包和更新了，呵呵，自己試試吧！ 現在的rhel5.3版本不用這么麻煩了。比如，光盤掛載的目錄是/misc/cd，則在/etc/yum.repos.d目錄中創建rhel5.repo文件。這個文件的名字隨便叫，格式如下：[Cluster]
name=Red Hat Enterprise Linux $releasever - $basearch -Cluster
baseurl=file:///misc/cd/Cluster
enable=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
[ClusterStorage]
name=Red Hat Enterprise Linux $releasever - $basearch -ClusterStorage
baseurl=file:///misc/cd/ClusterStorage
enable=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
[Server]
name=Red Hat Enterprise Linux $releasever - $basearch -Server
baseurl=file:///misc/cd/Server
enable=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
[VT]
name=Red Hat Enterprise Linux $releasever - $basearch -VT
baseurl=file:///misc/cd/VT
enable=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
完了，你就可以yum update、install and so on.

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