Enable EPEL Repository for CentOS 7 installed on Raspberry Pi 4

This will enable the EPEL repository on your Raspberry Pi 4

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

Copy/paste this:

[epel]
name=Epel rebuild for armhfp
baseurl=https://armv7.dev.centos.org/repodir/epel-pass-1/
enabled=1
gpgcheck=0

Save the above and run:

yum install epel-release -y