centos2ol VS upstream_sync

Oracle has a conversion script/tool to switch a CentOS machine to Oracle Linux. In the FAQ they're at least self-aware of their reputation:

turn CentOS 8 into Oracle Linux 8: https://github.com/oracle/centos2ol

But reading the docs and the claims that the site has https://linux.oracle.com/switch/centos/ it's a real option for mission-critical/production systems.

Actually Oracle Linux already fills that gap as a RHEL clone. Don't kill me, I know Oracle Linux is literally the only free product at that company. It even says so on their website:

If you need to manage your Linux repositories in-house, look at upstream_sync for RHEL and RHEL-clones. Look at debmirror for Debian and Debian-clones. If you have both, you can get debmirror for RHEL and RHEL-clones from EPEL, which would allow you to run both from one server.

Get x16 RHEL developer subscriptions. Use just x01 to setup a local repository and upstream_sync to pull down content. Fix the reposync options in upstream_sync to properly support RHEL 8 modular data. Configure all your RHEL servers to point to your local repository. Viola! You're now commiting fraud at an effectively limitless scale and, one day, IBM will show up to rape your butthole.

Check this out: upstream_sync

For RPM-based distros, like Alma, CentOS, RHEL, and Rocky, you can use something like this to more easily manage pulling content in your RHEL/RHEL-clone local repository server. Try to add your content into something like /repo/daily/distro_name/. Note, you will need to make a few changes to theupstream_syncscript to allow it to handle EL 8 modular metadata. It's like two additional flags under thecreaterepo` section ... I'll see if I can find them.

Start here. You need access to Red Hat CDN; otherwise known as a subscription and related certificate. You don't need that for CentOS or OEL (public). You just need to know what repositories you want to pull from.

upstream_sync for yum content (see here