CachyOS takes Arch Linux and adds optimized kernels, better scheduler support, and a more accessible installation experience. Every machine in my homelab runs it — Kubernetes nodes, the AI inference box, the router companion. The AUR covers everything, paru handles updates, and the cachyos-rate-mirrors tool keeps package downloads fast. When you need a system that stays current without reinstalling, this is it.
Ubuntu remains the safest answer when someone asks what Linux to install first. Massive community, excellent documentation, and apt gets you anything you need in seconds. Not what runs in my homelab but the foundation that most production tooling assumes — Docker, Kubernetes, Ansible all have Ubuntu as their primary target. Worth knowing well.
Oracle Linux is what runs on the OCI Kubernetes nodes at work — RHEL-compatible, enterprise support lifecycle, and free to download and use. If you work in any enterprise environment touching OCI or Oracle infrastructure, being comfortable with Oracle Linux is non-negotiable. Solid, stable, and exactly as boring as production infrastructure should be.