问题1;

Loaded plugins: fastestmirror, security

Determining fastest mirrors

Error: Cannot retrieve metalink for repository: epel. Please verify its path and try again

原因说明；

Running this command will update the repo to use HTTP rather than HTTPS:

原因更新回购用的是http而不是https

 

解决方法：

运行如下命令即可

sed -i "s/mirrorlist=https/mirrorlist=http/" /etc/yum.repos.d/epel.repo 接着再次运行你要安装的扩展源就可以成功了(*^__^*) 嘻嘻…… 以上问题参考：https://community.hpcloud.com/article/centos-63-instance-giving-cannot-retrieve-metalink-repository-epel-error