TrueNAS Early Release Documentation
This content follows TrueNAS 26 releases.
Use the Product and Version selectors above to view content specific to a stable software release.
Feature Deprecations
2 minute read.
As part of security hardening and improving feature maintainability, there are occasions when TrueNAS SCALE features must be deprecated and removed.
This page tracks features removed in 26 and features deprecated in 26 for removal in future versions. Begin planning migrations from these features immediately and note the TrueNAS upgrade paths required when a deprecated feature is in use.
This section tracks features removed in 26 and features deprecated in 26 for future removal. Plan migrations immediately to avoid disruptions during upgrades.
Deprecated: 25.04
Removed: 26
The TrueNAS REST API was deprecated in TrueNAS 25.04 and is removed in TrueNAS 26. Systems still using the REST API must migrate to the WebSocket API before upgrading.
The TrueNAS REST API has been fully replaced by the versioned JSON-RPC 2.0 Websocket API.
Migration Path:
- Review current API integrations and identify all REST API calls.
- Review the Websocket API documentation to identify replacement endpoints.
- Update all scripts and integrations to use Websocket API endpoints.
- Test thoroughly in a non-production environment.
- Deploy updated integrations before upgrading to 26.
Impact: Systems still using the REST API must migrate to the Websocket API before upgrading to 26. REST API endpoints do not function in 26 and later.
See Also:
No features are currently deprecated for future removal.
- See the 26 Version Notes for complete release information and known issues
- See the Software Development Life Cycle for an overview of the TrueNAS release process and versioning scheme