1 在开源镜像站点下载CentOS的repo文件

[root@bogon ~]# cd /etc/yum.repos.d/

2 修改CentOS的repo文件

[root@bogon yum.repos.d]# vim /etc/yum.repos.d/CentOS6-Base-163.repo

:g/$releasever/s//6/g

:wq

3 生成YUM缓存。

[root@bogon yum.repos.d]# yum makecache

Loaded plugins: product-id, refresh-packagekit, security, subscription-manager

Updating certificate-based repositories.

base | 3.7 kB 00:00

base/group_gz | 220 kB 00:00

base/filelists_db | 5.9 MB 00:09

base/primary_db | 4.4 MB 00:07

base/other_db | 2.8 MB 00:15

extras | 3.4 kB 00:00

extras/filelists_db | 11 kB 00:00

extras/prestodelta | 907 B 00:00

extras/primary_db | 19 kB 00:00

extras/other_db | 5.8 kB 00:00

updates | 3.4 kB 00:00

updates/filelists_db | 1.9 MB 00:03

updates/prestodelta | 297 kB 00:00

updates/primary_db | 3.2 MB 00:05

updates/other_db | 26 MB 00:58

Metadata Cache Created