CentOS 8 End of Life has been effective since January 31 2021, official mirrors do not provide any packages anymore. Here is how to upgrade to latest release of CentOS 8 and switch to Stream.
As always, prior to any system change, you should ensure you have a working recent backup.
Upgrade to latest CentOS 8
sed -i -e 's/mirrorlist/#mirrorlist/g' -e 's|#baseurl=http://mirror.centos.org|baseurl=https://vault.centos.org|g' /etc/yum.repos.d/*.repo
yum update
reboot
cat /etc/centos-release
CentOS Linux release 8.5.2111Make sure everything is working as expected.
Switch to CentOS Stream
sed -i -e 's/mirrorlist/#mirrorlist/g' -e 's|#baseurl=http://mirror.centos.org|baseurl=https://vault.centos.org|g' /etc/yum.repos.d/*.repo
dnf install centos-release-stream
dnf swap centos-linux-repos centos-stream-repos
dnf distro-sync
reboot
cat /etc/centos-release
CentOS Stream release 8Make sure everything is working as expected.
You’re done!