http://mirrors.163.com/.help/centos.html
#使用说明
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
运行以下命令生成缓存
yum clean all
yum makecache
正文完