Cannot retrieve metalink for repository: epel/x86_64 yum报错解决方法

1、打开 /etc/yum.repos.d/epel.repo；

/etc/yum.repos.d/epel.repo

2、注释掉mirrorlist，取消注释baseurl；

将

[epel]
name=Extra Packages for Enterprise Linux 7 - $basearch
#baseurl=http://download.fedoraproject.org/pub/epel/7/$basearch
mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=$basearch

修改为

[epel]
name=Extra Packages for Enterprise Linux 7 - $basearch
baseurl=http://download.fedoraproject.org/pub/epel/7/$basearch
#mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=$basearch

3、再次使用yum命令即正常！

yum clean all
yum makecache
yum update
yum install -y lsof