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I'm having the exact same issue on 25.10.2.1 — so the update alone doesn't fix it. I dug into it and found the actual root cause: The ix-vendor.service runs /usr/bin/start_vendor_service on boot, which calls vendor_service.py. This script starts a transient systemd unit called websocat.service (the websocket bridge between your local middleware and deck.hexos.com). The problem is that the script doesn't check whether websocat is already running before calling systemd-run --unit=websocat. If websocat is already active, the call fails with "Unit websocat.service was already loaded", but the script always exits with code 0 (it has a finally: sys.exit(0) block). Something then re-triggers ix-vendor, it fails again, and you get a rapid restart loop. Each loop iteration spawns a Python process that opens Docker sockets, and since the middlewared service only has a soft file descriptor limit of 1024, the FDs get exhausted quickly — hence the "Too many open files" error. Here's the fix that worked for me in truenas shell — a systemd override that adds a simple check before running the script: sudo mkdir -p /etc/systemd/system/ix-vendor.service.d/ sudo tee /etc/systemd/system/ix-vendor.service.d/no-loop.conf << 'EOF' [Service] ExecStart= ExecStart=/bin/bash -c 'if systemctl is-active --quiet websocat.service; then echo "websocat already running, skipping"; exit 0; fi; /usr/bin/start_vendor_service' EOF sudo systemctl daemon-reload sudo systemctl restart ix-vendor.service After this, ix-vendor shows active (exited) with status 0, websocat keeps running, and deck.hexos.com works fine. No more loop, no more FD exhaustion. I also raised the middleware FD limit as an extra safety net: sudo mkdir -p /etc/systemd/system/middlewared.service.d/ sudo tee /etc/systemd/system/middlewared.service.d/fd-limit.conf << 'EOF' [Service] LimitNOFILE=65536 EOF sudo systemctl daemon-reload sudo systemctl restart middlewared Both overrides live in /etc/systemd/system/ which - as far as I understand it "so far" - survives reboots. After a HexOS update you may want to verify they're still in place. Hopefully the HexOS team can add the is-active check to vendor_service.py itself so this gets fixed upstream.

Hello, One way that could fix this is to do the following. Update to TrueNAS version 25.10.2.1. which applies permanent resource limit fixes. Thank you

It seems like the TrueNAS Scale build repo on GitHub is "no longer actively maintained": https://github.com/truenas/scale-build Will this affect HexOS in the long term?