很多时候因为服务器不能联网，部分软件使用yum的时候，无法使用。现在我们使用本地光盘作为yum源。

  1. 挂载光盘

[root@×××Server ~]# mount /dev/cdrom /media
mount: block device /dev/xvdd1 is write-protected, mounting read-only
[root@×××Server ~]# echo "mount /dev/cdrom /media" >>/etc/rc.local

  第1句是挂载光盘，第2句是在启动的时候自动挂载光盘到/media目录

2.移除其余的yum资料

[root@×××Server ~]# mkdir -p /etc/yum.repos.d/bak
[root@×××Server ~]# ls /etc/yum.repos.d/
bak/                   CentOS-Debuginfo.repo  CentOS-Vault.repo
CentOS-Base.repo       CentOS-Media.repo
[root@×××Server ~]# mv /etc/yum.repos.d/Cent* /etc/yum.repos.d/bak/

3.新建cdrom.repo文件

[root@×××Server ~]# vim /etc/yum.repos.d/cdrom.repo
[c6-media]
name=CentOS-Media
baseurl=file:///media/
enabled=1
gpgcheck=0
gpgkey=file:///media/RPM-GPG-KEY-CentOS-6

4.清空缓存查看yum资源是否可用

[root@×××Server ~]# yum clean all
Loaded plugins: fastestmirror
Cleaning repos: c6-media
Cleaning up Everything

现在已经可以看到c6-media已经可用

5.测试

[root@×××Server ~]# yum list
yum-presto.noarch                        0.6.2-1.el6                    c6-media
yum-updateonboot.noarch                  1.1.30-14.el6                  c6-media
yum-utils.noarch                         1.1.30-14.el6                  c6-media
zenity.x86_64                            2.28.0-1.el6                   c6-media
zlib.i686                                1.2.3-29.el6                   c6-media
zlib-devel.i686                          1.2.3-29.el6                   c6-media
zlib-static.x86_64                       1.2.3-29.el6                   c6-media
zsh.x86_64                               4.3.10-7.el6                   c6-media
zsh-html.x86_64                          4.3.10-7.el6                   c6-media

从上面看已经ok了