CentOS更新YUM源文件

1.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

2.下载对应版本repo文件, 放入/etc/yum.repos.d/ 下 (操作前请做好相应备份)

• CentOS5
• CentOS6

3.运行以下命令生成缓存

yum clean all
yum makecache

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