一、备份
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.CentOS-Base.repo.backup提示 “ mv: cannot stat `/etc/yum.repos.d/CentOS-Base.repo': No such file or directory ” 的话直接进行下一步。
二、下载新的CentOS-Base.repo 到/etc/yum.repos.d/
点击到任何一个有二进制包的开源软件详情页，我们都可以看到配置文件的下载链接，比如对于 centos6系统，其配置文件下载地址为：
https://mirrors.aliyun.com/opensource/149994924900000037/opsx/centos6/opsx-centos6.repo
6U下载
wget https://mirrors.aliyun.com/opensource/149994924900000037/opsx/centos6/opsx-centos6.repo -O /etc/yum.repos.d/opsx-centos6.repo
7U 下载
wget https://mirrors.aliyun.com/opensource/149994924900000037/opsx/centos7/opsx-centos7.repo -O /etc/yum.repos.d/opsx-centos7.repo查看仓库
yum repolist | grep opsx
opsx-centos7 opsx-centos7
安装软件
yum install opsx-demo三、运行yum makecache生成缓存
yum makecache声明：本文章总结于 http://mirrors.aliyun.com/help/centos 与 https://opsx.alibaba.com/guide?lang=zh-CN&document=4662202e-bc8a-11e8-9aee-00163e000f43