Choosing a Linux distro for your VPS — Debian vs Ubuntu vs AlmaLinux vs Rocky

The "which distro?" question gets reopened every few years as the ecosystem shifts. For a VPS in 2026 the practical choices narrow to four families. This article covers what each is good at, what to avoid, and the rule of thumb when you can't decide.

Debian — the boring default

Use it when: you want a stable base for self-hosting, you don't need cutting-edge packages, you value predictability and long support cycles.

• Release cycle: every 2 years, supported for 3+ years after that.
• Package manager: apt.
• Init: systemd.
• Conservative defaults — fewer surprise changes between point releases.
• Debian 13 (trixie) is the current stable. Debian 12 (bookworm) is oldstable and still supported.

The reason this comes first: Debian is the substrate behind most "just install and forget" deployments. Not glamorous; seldom regretted.

Ubuntu LTS — Debian with newer packages

Use it when: you want a Debian-family system with more recent packages, you're targeting Docker / Kubernetes ecosystem, you want canonical-style commercial support optional.

• LTS release every 2 years, supported for 5 years standard.
• Package manager: apt (same syntax as Debian).
• Newer kernel and userland than Debian stable.
• Snap-based core tools (some love this, some don't).
• Ubuntu Server 26.04 LTS is current; 24.04 LTS still supported.

Ubuntu and Debian are close enough that a script written for one usually works on the other. Pick Ubuntu when you specifically need a newer package; pick Debian otherwise.

AlmaLinux / Rocky Linux — RHEL-compatible

Use it when: you're deploying software that documents itself against "RHEL/CentOS", you want the enterprise-y package set (SELinux first-class, firewalld, NetworkManager), or your team's muscle memory is RPM-based.

• Free rebuilds of Red Hat Enterprise Linux.
• 10-year support cycle per major version.
• Package manager: dnf (yum on older).
• Both AlmaLinux and Rocky are functionally interchangeable.
• AlmaLinux 10 / Rocky 10 current; 9 still supported.

The RHEL family is heavier than Debian out of the box — SELinux confines processes more aggressively, firewalld and NetworkManager add operational surface. Worth it for "enterprise-shaped" workloads; overkill for a personal blog.

What we DON'T recommend

• CentOS Stream. Rolling-release-ish ahead of RHEL. Not what most "I want CentOS" customers wanted. Use AlmaLinux or Rocky instead.
• CentOS 7. End of life. Don't start a new VPS on it.
• Fedora. Six-month release cycle is too fast for a server you want to leave alone.
• Arch / Manjaro / Gentoo. Rolling release is great for desktops, brutal on servers. Updates can change ABI mid-cycle. Use only if you genuinely want the maintenance burden.
• Alpine. Lovely for containers; awkward as a full VPS host because the package ecosystem is smaller and musl-libc surprises some software.
• Slackware. Charming but the package management model isn't designed for "yum install nginx" workflows. Use only if you specifically want Slackware.

If you can't decide

The rule of thumb:

• Default to Debian 13. Pick another only when there's a specific reason.
• Pick Ubuntu Server 26.04 LTS if you need a newer kernel or your team is more familiar with Ubuntu's Snap/Canonical ecosystem.
• Pick AlmaLinux 10 / Rocky 10 if the software you're deploying documents itself as RHEL- compatible (most PBX distros, many proprietary apps).

Choosing for specific workloads

• PBX (FreePBX®, FusionPBX®): pick the pre-built PBX option at order time rather than choosing a base distro. The base is opinionated and LYLIX-managed; you'd just be undoing that choice if you picked Debian or AlmaLinux directly and tried to install on top.
• Docker host: Ubuntu LTS or Debian. Both work well.
• Mail server: Debian. The combination of stable and minimal helps mail server maintainability.
• Web app server: Debian or Ubuntu LTS. Match your dev environment.
• Kubernetes node: Ubuntu LTS. Best kubeadm support.

Switching later

Migrating between distros is a clean OS reload — see OS reload. You keep the IP and hostname; everything else is rebuilt. So if you pick wrong, the cost of correcting is "a few hours to re-deploy your stack," not "a permanent commitment."