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

报错：

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

解决：
把/etc/yum.repos.d/epel.repo第3行注释去掉，把第四行注释掉，修改为

[epel]
name=Extra Packages for Enterprise Linux 6 - $basearch
baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch
#mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch