错误信息：Error: Cannot retrieve metalink for repository: epel. Please verify its path and try again
解决：
vim /etc/yum.repos.d/epel.repo
修改前：
将下面的baseurl前面的#都取消，在mirrorlist前面加上注释【全部】
#baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch
mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch
修改后：
baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch
#mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch
原文：http://heartbeats.blog.51cto.com/10780360/1725689