rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm
yum clean all
更新yum源地址
原文：https://www.cnblogs.com/spruce/p/12093732.html
https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm