Error: Cannot retrieve metalink for repository: epel. Please verify its path and try again

今天给 Centos 通过 rpm -Uvh 装了个 epel 的扩展后，执行 yum 就开始报错：

Error: Cannot retrieve metalink for repository: epel. Please verify its path and try again

在网上查了查，解决办法都是编辑 /etc/yum.repos.d/epel.repo ，把基础的恢复，镜像的地址注释掉

#baseurl
mirrorlist

改成

baseurl
#mirrorlist