CentOS vs Rocky Linux 2026: CentOS Linux EOL, Stream vs Rocky 9/10, migrate2rocky, cPanel, and Production Guidance

You are comparing CentOS vs Rocky Linux because runbooks still say “deploy on CentOS”—but CentOS Linux, the free downstream rebuild that defined Enterprise Linux for a generation, is end of life. What remains under the CentOS brand is CentOS Stream: the upstream branch where RHEL minors are developed. Rocky Linux is what many of those teams installed instead: a free, RESF-governed rebuild that rockylinux.org describes as bug-for-bug compatible with RHEL—founded by Gregory Kurtzer, a CentOS co-founder, explicitly to continue the CentOS Linux spirit after the 2020 shift.

This guide compares CentOS Stream 9 and 10 with Rocky Linux 9 and 10 in mid-2026, covers migrate2rocky from legacy CentOS Linux 8, and flags cPanel constraints that matter for former CentOS hosting fleets. Figures come from centos.org and docs.rockylinux.org—confirm on staging before production.

Quick answer: CentOS vs Rocky Linux in 2026

Pick Rocky Linux 9 or 10 when you need a production Enterprise Linux server after CentOS Linux—dnf, SELinux, 1:1 RHEL binary compatibility, and a 10-year support lifecycle at no OS license cost—and you are not blocked by cPanel 134+ or other panel matrices that dropped Rocky.

Pick CentOS Stream 9 or 10 when you develop, test, or contribute to the RHEL pipeline—previewing the next RHEL minor release—not when you want frozen downstream behavior like CentOS 7.

Do not install CentOS Linux 7 or 8 in 2026—they are EOL.

Pick this	Best reason
Rocky Linux 10	New EL10; security support to 2035-05-31
Rocky Linux 9	Mature 9.x fleet; security support to 2032-05-31
CentOS Stream 10	RHEL 10 upstream preview; EOL 2030-05-31
CentOS Stream 9	RHEL 9 upstream preview; EOL 2027-05-31

CentOS vs Rocky Linux at a glance

Topic	CentOS Stream 9/10	Rocky Linux 9	Rocky Linux 10
Role vs RHEL	Upstream preview	Downstream 1:1 RHEL rebuild	Same
Replaces CentOS Linux?	No (different product)	Yes (primary intent)	Yes
Founder lineage	CentOS Project / Red Hat ecosystem	Gregory Kurtzer (CentOS co-founder), RESF	Same
Cost	Free	Free	Free
Compatibility goal	Next RHEL minor content	Bug-for-bug with RHEL	Bug-for-bug with RHEL
Update cadence	Continuous composes	Minor releases after RHEL GA	Same
Stream branch EOL	9: 2027-05-31; 10: 2030-05-31	—	—
Rocky active support ends	—	2027-05-31	2030-05-31
Rocky security support ends	—	2032-05-31	2035-05-31
Package tool	DNF / RPM	DNF / RPM	DNF / RPM
cPanel/WHM (v134+, 2026)	Not primary matrix	Not supported	Not supported
In-place from CentOS Linux 8	Historical Stream swap	migrate2rocky	Fresh install / verify docs

Sources: centos.org/cl-vs-cs, CentOS download, Rocky Linux, Rocky version guide, migrate2rocky.

What “CentOS” means—and where Rocky Linux fits

CentOS Linux is gone

In December 2020, the CentOS Project moved investment from CentOS Linux to CentOS Stream. Per Comparing CentOS Stream and CentOS Linux:

Release	End of life
CentOS Linux 7	2024-06-30
CentOS Linux 8	2021-12-31
CentOS Stream 8	2024-05-31

CentOS Linux was a downstream rebuild of released RHEL—the OS behind countless hosting panels and yum tutorials.

CentOS Stream is upstream

CentOS Stream is the upstream, public development branch for RHEL. Content lands continuously—previewing upcoming RHEL minor releases—not mirroring a frozen RHEL minor like old CentOS Linux.

Rocky Linux continues the downstream clone model

Rocky Linux states it rebuilds sources directly from RHEL and is designed to be 100% bug-for-bug compatible with Red Hat Enterprise Linux. The Rocky Enterprise Software Foundation (RESF) governs the project; builds run through Rocky’s Peridot toolchain.

That positioning is deliberate: when CentOS Linux ended, Kurtzer and the community built Rocky to be the closest public continuation of the old “free RHEL clone” mental model—not the upstream preview role Stream took over.

IMPORTANT

CentOS vs Rocky Linux in 2026 means Stream vs Rocky for new installs—or migrate legacy CentOS Linux to Rocky. Treating CentOS Stream as “the new CentOS Linux” is the mistake Rocky was created to solve—for production downstream behavior, pick Rocky (or AlmaLinux), not Stream.

CentOS Stream vs Rocky Linux: upstream vs downstream rebuild

Dimension	CentOS Stream	Rocky Linux
Pipeline position	Before RHEL minor GA	After RHEL sources publish
Package versions	Often ahead of released RHEL	Aims to match RHEL NVRs
Best for	SIG work, preview testing	Production EL without subscription
Old CentOS Linux behavior	No	Closest free option (with AlmaLinux)
Red Hat production positioning	Development platform	Community production rebuild

Red Hat Developer documentation states CentOS Stream is not designed for enterprise production the way RHEL is—Rocky targets operators who still want released-minor Enterprise Linux without a Red Hat invoice.

Support timelines

Rocky Linux

Per Rocky Linux Release and Version Guide:

Major	GA	Active support until	Security support until
Rocky Linux 9	14 Jul 2022	2027-05-31	2032-05-31
Rocky Linux 10	11 Jun 2025	2030-05-31	2035-05-31
Rocky Linux 8	1 May 2021	2024-05-31 (ended)	2029-05-31

Rocky Linux advertises a 10-year support lifecycle at no cost—RESF maintenance and Rocky errata, not Red Hat support cases.

CentOS Stream

Per centos.org/download and cl-vs-cs:

Stream major	End-of-life
CentOS Stream 9	2027-05-31
CentOS Stream 10	2030-05-31

Stream EOL aligns with RHEL full support for that major. Rocky’s security-support end dates can extend beyond Stream branch sunset on the same major—plan upgrades (9 → 10) as infrastructure projects on either side.

Migration from CentOS to Rocky Linux

CentOS Linux 8 → Rocky Linux (primary path)

Rocky’s migrate2rocky guide documents in-place conversion from CentOS Linux 8, CentOS Stream, AlmaLinux, RHEL, and Oracle Linux on EL8 or EL9. Our step-by-step: migrate CentOS to Rocky Linux.

Prerequisites from official docs:

EL8 or EL9 (use migrate2rocky9.sh on 9.x)
Non-Stream CentOS frozen at 8.x for migration tooling—verify your minor
Backup and staging test mandatory
Read README for Katello / Satellite repo conflicts

Rocky 9 example:

bash


curl -O https://raw.githubusercontent.com/rocky-linux/rocky-tools/main/migrate2rocky/migrate2rocky9.sh
chmod u+x migrate2rocky9.sh
sudo ./migrate2rocky9.sh -r

Verify:

bash

cat /etc/rocky-release
hostnamectl

Lab host shape:

text

Rocky Linux release 9.4 (Blue Onyx)
Operating System: Rocky Linux 9.4 (Blue Onyx)

CentOS Linux 7 → Rocky Linux

There is no direct migrate2rocky path from CentOS 7 to Rocky 8+. You must upgrade to EL8 first (historically CentOS 8, now often reinstall or multi-hop tooling) or provision fresh Rocky and restore data. Our migration article documents the EL8-only script requirement:

text

This script must be run on an EL8 distribution. Migration from other distributions is not supported.

CentOS Linux 8 → CentOS Stream 8 (historical)

CentOS documented conversion toward Stream, not Rocky:

bash

sudo dnf swap centos-linux-repos centos-stream-repos
sudo dnf distro-sync

Stream 8 is EOL. Production-oriented CentOS Linux 8 hosts typically chose migrate2rocky or AlmaLinux—not Stream—as the migration target.

CentOS Stream → Rocky Linux

migrate2rocky lists CentOS Stream as a supported source on EL8/EL9—but you are moving from upstream preview to downstream rebuild. Treat it as a planned migration with staging validation, not a zero-risk repo flip.

From	Rocky target	Tool
CentOS Linux 8	Rocky 8 first	migrate2rocky
CentOS Linux 8 → Rocky 9/10	Fresh install or separate major-upgrade plan	Rebuild / restore data
CentOS Linux 7	Rocky 8+	Reinstall or multi-hop plan first
CentOS Stream 9	Rocky 9	migrate2rocky9 with staging test
AlmaLinux/RHEL/Oracle Linux 8 or 9	Matching Rocky major	migrate2rocky

Package management and administration

Both Stream and Rocky use DNF, RPM, SELinux, and firewalld.

Task	CentOS Stream	Rocky Linux
Install	`sudo dnf install nginx`	Same
Release file	`/etc/centos-release`	`/etc/rocky-release`
Extra repos	EPEL, CRB	EPEL — install on Rocky
Roll back updates	DNF history	Same

bash


# Rocky Linux
cat /etc/rocky-release
uname -r

# CentOS Stream
cat /etc/centos-release
uname -r

text


Rocky Linux release 9.8 (Blue Onyx)
5.14.0-687.el9.x86_64

CentOS Stream release 9
5.14.0-*.el9.x86_64

Command reference: DNF command in Linux. Firewall: firewalld cheat sheet. Fresh install walkthrough: install Rocky Linux.

Web hosting and cPanel (critical for ex-CentOS shops)

Many CentOS Linux servers ran cPanel/WHM. In 2026:

CentOS Linux is EOL—do not build new panel servers on it.
CentOS Stream is not the usual cPanel target.
Rocky Linux 8/9 is not supported on cPanel 134+ (January 2026)—new installs and upgrades are blocked per cPanel release notes.

Hosting scenario	Practical pick
New cPanel server (2026)	AlmaLinux 9/10 or Ubuntu 24.04—not Rocky
Legacy Rocky + old cPanel	Plan AlmaLinux migration before panel updates
General EL VPS (no panel)	Rocky 9/10 strong fit
RHEL preview lab	CentOS Stream

Former CentOS hosts that moved to Rocky for cPanel may need almalinux-deploy—see CentOS vs AlmaLinux and AlmaLinux vs Rocky Linux.

Architectures and EL10 baselines

Rocky ships x86_64, aarch64, ppc64le, s390x, and documents riscv64 on supported platforms per Rocky documentation.

EL10 x86_64	Rocky Linux 10	CentOS Stream 10
CPU baseline	x86_64_v3 (Haswell-era class)	x86_64_v3 class
Older pre-v3 hardware	Hardware refresh or stay on EL9	Same

AlmaLinux 10 offers x86_64_v2 images for older 64-bit servers—Rocky does not target v2 on EL10. See AlmaLinux vs Rocky Linux if CPU age drives your choice.

Workload guide: CentOS Stream vs Rocky Linux

Workload	CentOS Stream	Rocky Linux
Replace CentOS Linux production	Poor fit	Strong fit
cPanel / WHM new builds (2026)	Not primary	Blocked on v134+
RHEL ecosystem contribution	Strong fit	Secondary
ISV apps certified on RHEL	Test on Stream; run on Rocky/RHEL	Strong fit
Strict RHEL NVR / binary parity	Lagging until RHEL GA	Strong fit
Kubernetes / nginx / PostgreSQL	Preview labs	Strong fit
CI previewing next RHEL minor	Strong fit	Rebuild after RHEL publishes
Cost-sensitive EL fleet	Free (preview cadence)	Free (downstream cadence)

Who should choose CentOS Stream vs Rocky Linux

Choose Rocky Linux when

You are migrating from CentOS Linux 8 with migrate2rocky.
You want the closest 1:1 RHEL binary clone at no license cost.
Your ISV matrix or internal standard names Rocky without cPanel constraints.
You prefer RESF governance and the project founded by a CentOS co-founder.

Choose CentOS Stream when

You contribute to Enterprise Linux SIGs or test upcoming RHEL minors.
You need upstream visibility ahead of RHEL GA—not CentOS 7-style stability.
You partner with Red Hat on pipeline validation.

Choose AlmaLinux instead of Rocky when

You run cPanel 134+ or need x86_64_v2 on EL10—see CentOS vs AlmaLinux.

Choose RHEL instead of both when

Contracts require Red Hat subscriptions and Convert2RHEL—see CentOS vs Red Hat.

Common mistakes

Treating CentOS Stream as “the new CentOS Linux” — use Rocky or AlmaLinux for downstream production.
Migrating CentOS 7 directly to Rocky 8+ — migrate2rocky requires EL8+; upgrade or reinstall first.
Deploying Rocky for new cPanel in 2026 — panel support ended; use AlmaLinux.
Skipping staging before migrate2rocky — custom kernels, panels, and Katello repos break silently.
Assuming Rocky equals CentOS Stream — Stream is upstream; Rocky is downstream rebuild.
Staying on CentOS Linux 7 — EOL June 2024; migrate urgently.
Ignoring EL10 CPU baselines — Rocky 10 expects x86_64_v3 on default x86 media.

Summary

CentOS Linux—the downstream free rebuild—is end of life. CentOS Stream is the upstream RHEL development branch through Stream 9 (EOL 2027-05-31) and Stream 10 (EOL 2030-05-31). Rocky Linux 9 and 10 are free, RESF-governed rebuilds that aim for bug-for-bug compatibility with RHEL—the path most CentOS Linux operators chose for production after 2021, with security support through 2032 (9) or 2035 (10).

Choose Rocky Linux to replace CentOS Linux on general EL servers. Choose CentOS Stream to preview RHEL. Do not greenfield EOL CentOS Linux. Run migrate2rocky on staging, validate workloads, and if you run cPanel, confirm you are not on Rocky-blocked panel branches before you commit.

Official references: CentOS Project, CentOS cl-vs-cs, Rocky Linux, Rocky version guide, migrate2rocky, Rocky errata.

On-site next steps: migrate CentOS to Rocky Linux, CentOS vs AlmaLinux, Red Hat vs Rocky Linux, AlmaLinux vs Rocky Linux, install Rocky Linux.

Frequently Asked Questions

1. Is Rocky Linux the replacement for CentOS?

Rocky Linux is a leading replacement for legacy CentOS Linux—the free downstream RHEL-compatible rebuild many teams chose after the 2020 CentOS shift. Rocky was founded by Gregory Kurtzer, a CentOS co-founder, under the RESF. It is not a replacement for CentOS Stream, which is the upstream RHEL development branch. For production EL after CentOS Linux EOL, Rocky 9 or 10 fits general workloads; Stream is for RHEL pipeline work.

2. What is the difference between CentOS Stream and Rocky Linux?

CentOS Stream is upstream of RHEL—continuous delivery previewing upcoming RHEL minor releases per centos.org. Rocky Linux rebuilds RHEL sources with bug-for-bug binary compatibility per rockylinux.org—dnf, SELinux, and RPM like old CentOS Linux, but as a downstream release, not an upstream preview. Stream may run ahead of Rocky on package versions until RHEL minors ship.

3. Can I migrate from CentOS to Rocky Linux in place?

Yes from CentOS Linux 8 to Rocky Linux 8, and from supported EL9 sources to Rocky Linux 9 using migrate2rocky9. CentOS 7 is not a direct migrate2rocky source, and CentOS 8 to Rocky 9/10 should be treated as a rebuild or separate upgrade project. Take backups, test on staging, and read the script README for Katello and panel conflicts.

4. Is CentOS or Rocky Linux better for cPanel hosting in 2026?

Neither EOL CentOS Linux nor CentOS Stream is the right greenfield choice for current cPanel matrices. Rocky Linux 8/9 is blocked on cPanel 134+ (January 2026)—new installs and upgrades fail. Former CentOS hosting shops on cPanel should target AlmaLinux 8/9/10 or Ubuntu 24.04 LTS per cPanel release notes, not Rocky on current panel branches.

5. What happened to CentOS Linux?

The CentOS Project shifted focus to CentOS Stream in December 2020. CentOS Linux 8 ended December 2021; CentOS Linux 7 ended June 2024 per centos.org/cl-vs-cs. Rocky Linux launched in 2021 as a community enterprise OS designed to be bug-for-bug compatible with RHEL—the closest public continuation of the old CentOS Linux model.

6. How long is Rocky Linux supported compared to CentOS Stream?

Rocky Linux 9 has active support until 2027-05-31 and security support until 2032-05-31; Rocky Linux 10 until 2030-05-31 and 2035-05-31 per wiki.rockylinux.org. CentOS Stream 9 EOL is 2027-05-31 and Stream 10 is 2030-05-31 per centos.org—Stream aligns with RHEL full support; Rocky publishes its own errata and RESF maintenance calendar.

7. Is Rocky Linux the same as RHEL or CentOS Stream?

Rocky Linux aims for 1:1 binary compatibility with RHEL per rockylinux.org—it is neither RHEL (no Red Hat subscription) nor CentOS Stream (not upstream preview). It fills the downstream clone role CentOS Linux held before the Stream transition.

8. Should I use CentOS Stream or Rocky Linux for production?

Use Rocky Linux 9 or 10 for production servers that need stable RHEL-compatible downstream behavior—general VPS, databases, and ISV stacks—when cPanel and other panel constraints do not block Rocky. Use CentOS Stream 9 or 10 when you test or contribute to the RHEL development pipeline. Red Hat positions Stream as development-oriented, not as old CentOS Linux production.