yum安裝時出現：Cannot retrieve metalink for repository: epel. Please verify its path and try again

在CentOS 6.3 x86_64下安裝php-mcrypt的時候出現了問題：Error: Cannot retrieve metalink for repository: epel. Please verify its path and try again，需要安裝epel源。

解決方法： 一句話：把/etc/yum.repos.d/epel.repo，文件第3行注釋去掉，把第四行注釋掉。具體如下：

打開/etc/yum.repos.d/epel.repo，將

1. [epel]
2. name=Extra Packages for Enterprise Linux 6 - $basearch
3. #baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch
4. mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch

修改為

1. [epel]
2. name=Extra Packages for Enterprise Linux 6 - $basearch
3. baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch
4. #mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch

再清理源，重新安裝

1. yum clean all
2. yum install -y 需要的包

 

如果還是不行，修改DNS,到/etc/resolv.conf下添加一下：

nameserver 8.8.8.8
search localdomain

然后重啟network服務：service network restart