首先备份/etc/yum.repos.d/CentOS-Base.repo
mv/etc/yum.repos.d/CentOS-Base.repo/etc/yum.repos.d/CentOS-Base.repo.backup
下载对应版本repo文件,放入/etc/yum.repos.d/(操作前请做好相应备份)
CentOS5
CentOS6
运行以下命令生成缓存
yumcleanall yummakecache
