Error: Failed to download metadata for repo 'epel': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

Mon Sep 25 14:56:30 UTC 2023

> On Sep 25, 2023, at 1:44 AM, Kaushal Shriyan <kaushalshriyan at gmail.com> wrote:
> 
>> https://mirrors.tuna.tsinghua.edu.cn/epel/8/Everything/x86_64/repodata/repomd.xml

It says right there in the error message it could not reach the EPEL repository at tsinghua.edu.cn. You would need to whitelist every entry in your active /etc/yum.repos.d files to avoid further issues.