The way to solve this problem have two methods:
1.Through command line
Running this command will update the repo to use HTTP rather than HTTPS:
sudo sed -i "s/mirrorlist=https/mirrorlist=http/" /etc/yum.repos.d/epel.repo
You should then be able to update with this command:
yum -y update
2.Through configutation file:
vi /etc/yum.repos.d/epel.repo
Remove the # before the baseurl which is under epel,add the # before mirrorlist ,then is OK:
[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 failovermethod=priority enabled=1 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
Then run command line:
yum makecache
cannot retrieve metalink for repository epel. please verify its path and try again
原文：http://www.cnblogs.com/cocos2014/p/4166670.html