1，下载库文件
http://dl.fedoraproject.org/pub/epel/7/x86_64/Packages/e/epel-release-7-11.noarch.rpm
2，安装
rpm -ivh epel-release-xx.noarch.rpm 或者 yum localinstall epel-release-xx.noarch.rpm
centos7启用EPEL Repository
原文：http://www.cnblogs.com/dongbo/p/7753567.html
