Choosing a Linux Distribution for Your Server

For most web servers, the best Linux distribution is one with a long support lifecycle that your team already knows and that your software supports. In practice that usually means Ubuntu LTS or Debian for general web and application servers, and AlmaLinux or Rocky Linux where you want RHEL compatibility or use software (such as some control panels) built around that family.

All four are free, stable and well suited to servers. The differences are in lifecycle, tooling and ecosystem.

The main options

	Ubuntu LTS	Debian	AlmaLinux	Rocky Linux
Family	Debian-based	Debian	RHEL-compatible	RHEL-compatible
Package manager	apt (.deb)	apt (.deb)	dnf (.rpm)	dnf (.rpm)
Release model	LTS every two years	New stable roughly every two years	Follows RHEL major releases	Follows RHEL major releases
Standard support	5 years for LTS (longer with paid extended maintenance)	About 3 years, plus around 2 years of community LTS	About 10 years per major version	About 10 years per major version
Backed by	Canonical	Debian community	AlmaLinux OS Foundation	Rocky Enterprise Software Foundation
Typical strengths	Huge community, documentation, cloud images	Conservative and stable, minimal	Long lifecycle, enterprise compatibility	Long lifecycle, enterprise compatibility

Lifecycles change with each release, so check the official lifecycle page for the exact version you install.

Ubuntu LTS

Good for: most web and application servers, developers who already use Ubuntu, Docker hosts and cloud deployments.

Ubuntu's Long Term Support releases come out every two years. Documentation and community answers are plentiful, and most software vendors publish Ubuntu packages and guides. Avoid non-LTS releases on servers; their support is short.

Debian

Good for: administrators who want a minimal, conservative base that changes slowly.

Debian stable prioritises stability over the newest versions. Packages are well tested but sometimes older, which you can supplement with official upstream repositories where needed.

AlmaLinux and Rocky Linux

Good for: environments that standardise on Red Hat Enterprise Linux compatibility, software certified for RHEL, and servers running control panels that target this family.

Both were created after CentOS Linux shifted to CentOS Stream, to provide free RHEL-compatible releases. Their ten-year major version lifecycles mean fewer major upgrades.

Control panel compatibility

If you plan to run a control panel, check its supported operating systems before choosing:

• cPanel & WHM supports specific versions of AlmaLinux, Rocky Linux, CloudLinux and Ubuntu.
• Plesk supports specific versions of Debian, Ubuntu, AlmaLinux and Rocky Linux.

Support lists change with each panel release, so use the panel vendor's current documentation. See cPanel vs Plesk vs no control panel.

How to choose

1. Required by your software? Use what your control panel or application vendor supports.
2. Team experience? Choose the family your administrators know best; familiarity prevents mistakes.
3. Lifecycle? Prefer a release with several years of support remaining at install time.
4. Ecosystem? For container-heavy or cloud-native stacks, Ubuntu or Debian are common defaults.

Everyday differences you will notice

Task	Ubuntu / Debian	AlmaLinux / Rocky Linux
Install a package	sudo apt install nginx	sudo dnf install nginx
Update packages	sudo apt update && sudo apt upgrade	sudo dnf upgrade
Default firewall tool	UFW (Ubuntu, optional on Debian)	firewalld
Mandatory access control	AppArmor	SELinux (enforcing by default)
Automatic security updates	unattended-upgrades	dnf-automatic
Web server service name	apache2	httpd
Extra packages	PPAs (Ubuntu), backports	EPEL repository

SELinux on AlmaLinux and Rocky adds strong protection but can block applications that write to unexpected locations. Learn to read its denials (ausearch -m avc) and adjust policies, rather than disabling it.

Planning major upgrades

Every distribution release eventually reaches end of life. Plan ahead:

1. Note the end-of-support date of your release when you install the server.
2. A year before, test your applications on the next release.
3. Decide between an in-place upgrade (supported on Ubuntu and Debian; more complex between RHEL-family major versions) or building a new server and migrating.
4. Schedule the work well before the deadline.

Building a fresh server and migrating is often the cleaner option, especially for long-lived servers; see the server migration checklist.

Things that matter more than the distribution

• Applying security updates promptly, ideally with unattended or automatic security updates.
• Hardening SSH and the firewall; see the Linux server hardening checklist.
• Planning major-version upgrades before the old release reaches end of life.
• Monitoring and backups.

Frequently Asked Questions

What happened to CentOS?

CentOS Linux 8 reached end of life at the end of 2021 and CentOS Linux 7 in mid-2024. CentOS Stream continues as a development preview ahead of RHEL. AlmaLinux and Rocky Linux emerged as RHEL-compatible replacements.

Can I switch distributions later?

Not in place, in practice. Switching means building a new server and migrating. Choose with the long term in mind.

Is Ubuntu or Debian better for a web server?

Both are excellent. Ubuntu offers more vendor guides and newer packages in each LTS; Debian is more minimal and conservative.

Related reading

For the bigger picture, see what is a VPS, and compare the ServerNeed VPS plans.

Sources

• Ubuntu release cycle
• Debian releases
• AlmaLinux wiki: Release notes and lifecycle
• Rocky Linux documentation

Featured image: “Void linux terminal window” by Muruatwiki, licensed under CC BY 4.0.