阿里元鏡像網:https://opsx.alibaba.com/mirror
首先先配置yum源
先備份一下yum源
#mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
下載新的CentOS-Base.repo 到/etc/yum.repos.d/
CentOS 7
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
或者:curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo