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(RHEL/CentOS 6 64-Bit)
# wget http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
# rpm -ivh epel-release-6-8.noarch.rpm

执行yum就开始报错：
Error: Cannot retrieve metalink for repository: epel. Please verify its path and try again
解决办法是编辑/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