Support status and lifecycle
MooseFS ships in two editions — Community (open source, GPLv2) and Pro (commercial) — on parallel major version streams that share one codebase. A version stream is supported while it receives bug-fix and security releases. When a stream reaches the end of its support window it is marked end-of-life (EOL) — it still runs, but no more updates are published, and we recommend upgrading to a supported stream.
The current actively-supported stream is 4.x for both editions. The new Pro 5.x stream opened in April 2026 alongside it. Older streams are listed below for reference.
Pro edition timeline
The Pro stream gets the longest support windows and a head start on every new major version. End-of-life dates marked TBA have not yet been announced.
| Version | Released | Latest release | Status | End-of-life |
|---|---|---|---|---|
| MooseFS Pro 5.x | Apr 2026 | 5.0.2 (Jun 2026) | Supported | TBA |
| MooseFS Pro 4.x | May 2019 | 4.59.2 (May 2026) | Supported | TBA |
| MooseFS Pro 3.x | Jun 2016 | 3.0.118 (Aug 2024) | EOL | Mar 31, 2025 |
| MooseFS Pro 2.x | Jul 2014 | — | EOL | Dec 31, 2017 |
Community edition timeline
The open-source Community edition follows the same major-version cadence one stream behind Pro. 4.x is the actively-supported stream; earlier streams are kept here for historical reference.
| Version | Released | Latest release | Status | End-of-life |
|---|---|---|---|---|
| MooseFS 4.x | Sep 2024 | 4.52 (May 2026) | Supported | TBA |
| MooseFS 3.x | Jun 2016 | 3.0.118 (Aug 2024) | EOL | Mar 31, 2025 |
| MooseFS 2.x | Jul 2014 | — | EOL | Dec 31, 2017 |
| MooseFS 1.6.x | Dec 2009 | — | EOL | Dec 31, 2015 |
| MooseFS 1.5.x | May 2008 | — | EOL | Dec 31, 2010 |
Time to upgrade?
MooseFS supports rolling upgrades — you can move from one major version to the next while the cluster keeps serving. The documentation has step-by-step instructions for each upgrade path. If you’d like an engineer to look over the plan before you start, get in touch.