On June 1st, 2025, an update to the TrueNAS Apps Catalog will enable per-App IP addressing. This update will also break the ability to automatically migrate Apps from Cobia (23.10) and Dragonfish (24.04) to Electric Eel (24.10.2.2).

TrueNAS Apps in Dragonfish and earlier run on Kubernetes, while Electric Eel Apps run on Docker. The TrueNAS Engineering team developed the automated migration to ensure that upgrades would be simplified and straightforward, which our community embraced by making Electric Eel the fastest-adopted version of TrueNAS ever. With months of refinement and hundreds of fixes behind it, Electric Eel delivers reliable storage and applications and is recommended for even the most mission-critical workloads.

TrueNAS SCALE systems running Cobia (23.10) or earlier should upgrade to Dragonfish (24.04.2.5) and then subsequently to Electric Eel (24.10.2.2) afterwards.

TrueNAS systems with Apps should be upgraded immediately to 24.10.2.2, before June 1st! For users who are not yet running 24.10, the Apps auto-migration will make the process simple to move from Kubernetes to Docker, and users already on 24.10 can simply upgrade to the latest release from within the web UI or by downloading the standalone upgrade bundle from the TrueNAS Community Edition website under the Legacy Version column.

After June 1st, Cobia and Dragonfish users with Kubernetes Apps will need to manually back up and restore their application data and configuration to a new Electric Eel installation. The manual update process is more complex and should be avoided.

Upgrade NOW!

Most TrueNAS systems are already running Electric Eel (24.10) or Fangtooth (25.04) and are already prepared to leverage the new IP addressing capabilities in the June 1st Apps update. Users running NAS-only systems and those running TrueNAS 13.x will not be impacted by this change, but the small percentage of TrueNAS Cobia and Dragonfish systems with Apps – about 5% of TrueNAS systems – will encounter errors attempting to update Apps after this update.

If your system is still running TrueNAS Dragonfish, Cobia, or even earlier – the time to upgrade to Electric Eel is now. There’s no need to upgrade to Fangtooth (25.04) immediately – but upgrading to the newer TrueNAS releases ensures that you receive the latest stability, security, and functionality enhancements.