首先备份/etc/yum.repos.d/CentOS-Base.repo

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

下载对应版本repo文件, 放入/etc/yum.repos.d/(操作前请做好相应备份)

img/20170809/qyoriqytd4r.repo

img/20170809/y01sxik3nok.repo

以上二个源可以在ssh里用wget命令下载.

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