阿里云Linux安裝鏡像源地址:http://mirrors.aliyun.com/
第一步:備份你的原鏡像文件,以免出錯后可以恢復。
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
第二步:下載新的CentOS-Base.repo 到/etc/yum.repos.d/
- CentOS 5
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo
- CentOS 6
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
- CentOS 7
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
第三步:運行yum makecache生成緩存
yum clean all
yum makecache