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
执行
yum --disablerepo=epel -y update ca-certificates
运行yum报错Error: Cannot retrieve metalink for reposit
原文地址：http://21024.blog.51cto.com/11024/1791603
