Workaround for CentOS 7 EOL repo closures

CentOS 7 is end of life as of June 30, 2024 so no more security or bug fix updates via official YUM repos.

To get your existing repo’s working again, execute the following commands:

sed -i s/mirror.centos.org/vault.centos.org/g /etc/yum.repos.d/*.repo
sed -i s/^#.*baseurl=http/baseurl=http/g /etc/yum.repos.d/*.repo
sed -i s/^mirrorlist=http/#mirrorlist=http/g /etc/yum.repos.d/*.repo

Yum update will work again after the above change.