一. 远程ftp服务器yum的安装
      1.在ftp服务器上匿名用户可以访问的目录中新建目录rhel,将光盘中的所有内容拷贝到该文件夹中。
     2.  查看主机/etc/yum.conf中所含有的一行话(#in /etc/yum.repos.d).然后进入到/etc/yum.repos.d文件夹下,将rhel-debuginfo.repo拷贝一份并重命名为server1.repo(扩展名必须是repo!)。
rhel-debuginfo.repo中的原文件如下:
[root@localhost yum.repos.d]# vim rhel-debuginfo.repo

[rhel-debuginfo]
name=Red Hat Enterprise Linux $releasever - $basearch - Debug
baseurl=ftp://ftp.redhat.com/pub/redhat/linux/enterprise/$releasever/en/os/$basearch/Debuginfo/
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
~                                                                             
~  
---------------------   
修改后的server1文件内容如下: 
[root@localhost yum.repos.d]# vi server1.repo

[rhel-server1]
name=Red Hat Enterprise Linux $releasever - $basearch - Debug
baseurl=ftp://192.168.1.5/rhel/Server
enabled=1
gpgcheck=1
gpgkey=ftp://192.168.1.5/rhel/RPM-GPG-KEY-redhat-release
[rhel-vt]
name=Red Hat Enterprise Linux vt
baseurl=ftp://192.168.1.5/rhel/VT
enabled=1
gpgcheck=1
gpgkey=ftp://192.168.1.5/rhel/RPM-GPG-KEY-redhat-release
[rhel-cluster]
name=Red Hat Enterprise Linux cluster
baseurl=ftp://192.168.1.5/rhel/Cluster
enabled=1
gpgcheck=1
gpgkey=ftp://192.168.1.5/rhel/RPM-GPG-KEY-redhat-release
[rhel-clusterstorage]
name=Red Hat Enterprise Linux clusterstorage
baseurl=ftp://192.168.1.5/rhel/ClusterStorage
enabled=1
gpgcheck=1
gpgkey=ftp://192.168.1.5/rhel/RPM-GPG-KEY-redhat-release
~                                                                             
~                                                                                                                                                         
"server1.repo" 24L, 710C    
-----------------------------------
3.建立yum缓存!

[root@localhost yum.repos.d]# yum list all


结束!

二.  基于本地挂载的光盘使用的yum!
挂载光盘后,编辑server1.repo即可!
root@localhost yum.repos.d]# vi server1.repo

[rhel-server1]
name=Red Hat Enterprise Linux $releasever - $basearch - Debug
baseurl=file:///mnt/cdrom/Server
enabled=1
gpgcheck=1
gpgkey=file:///mnt/cdrom/RPM-GPG-KEY-redhat-release
[rhel-vt]
name=Red Hat Enterprise Linux vt
baseurl=file:///mnt/cdrom/VT
enabled=1
gpgcheck=1
gpgkey=file:///mnt/cdrom/RPM-GPG-KEY-redhat-release
[rhel-cluster]
name=Red Hat Enterprise Linux cluster
baseurl=file:///mnt/cdrom/Cluster
enabled=1
gpgcheck=1
gpgkey=file:///mnt/cdrom/RPM-GPG-KEY-redhat-release
[rhel-clusterstorage]
name=Red Hat Enterprise Linux clusterstorage
baseurl=file:///mnt/cdrom/ClusterStorage
enabled=1
gpgcheck=1
gpgkey=file:///mnt/cdrom/RPM-GPG-KEY-redhat-release
                                                                                                                                                     
然后,建立yum缓存!

[root@localhost yum.repos.d]# yum list all