- 默认使用centos6.8
- 默认aliyun的源
- 备份
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup- 下载阿里云源配置文件（针对centos6版本）
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo- 生成缓存
- yum makecache
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backupwget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo原文：https://www.cnblogs.com/sunnyangzs/p/8638340.html