1.备份 cd /etc/yum.repos.d mv CentOS-Base.repo CentOS-Base.repo.bak 2.下载阿里云 的 CentOS-Base.repo 到 /etc/yum.repos.d CentOS 6 wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo 或者 curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-