1.下载wget
- yum wget install -y
2.备份源yum仓库
- mv CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
3.下载阿里云yum仓库
- wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
4.清空以前的yum缓存
- yum clean all
5.获取阿里云的缓存
- yum makecache
