Users who purchase the add-on get the full value of a Red Hat subscription, including support, certifications, training, RHEL-specific documentation, and so on.
Users who are willing to forego that level of support have other options:
- Install from the RHEL install media
- Install from the CentOS or Scientific Linux repos
- Download and rebuild the necessary SRPMs from the Red Hat FTP server
As an example, using the CentOS repository:
cat >/etc/yum.repo.d/CentOS-Base.repo <<EOF [centos-base] name=CentOS-$releasever - Base mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os enabled=0 EOF yum install --enablerepo=centos-base pacemaker