在CentOS 6安装epel后出问题，报错：Error: Cannot retrieve metalink for repository: epel. Please verify its path and try again，需要安装epel源。

解决方法：

一句话：把/etc/yum.repos.d/epel.repo，文件第3行注释去掉，把第四行注释掉。具体如下：

打开/etc/yum.repos.d/epel.repo，将

[epel]

name=ExtraPackagesforEnterpriseLinux6-$basearch

#baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch

mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch

修改为

[epel]

name=ExtraPackagesforEnterpriseLinux6-$basearch

baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch

#mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch

再清理源，重新安装

yum clean all

yum install -y 需要的包

如果还是不行，修改DNS,到/etc/resolv.conf下添加一下：

nameserver 8.8.8.8

search localdomain

然后重启network服务：service network restart