HollandNAS Hardware Monitor v1.7.0

Hardware monitoring and conservative cooling control dashboard for HollandNAS / TrueNAS SCALE.

v1.7.0 changes

Ollama Fan Boost

• Adds an optional Ollama-driven case-fan automation on the Cooling page.
• Disabled by default.
• Uses Ollama /api/ps directly as the model-loaded trigger.
• Controls only the three case-fan channels:
  • Fan 4 — Rear Exhaust.
  • Fan 5 — Top Fan 2.
  • Fan 6 — Top Fan 1.
• Leaves all three front radiator fans and the AIO pump untouched.
• Uses only the known-working fixed-duty Commander ST write path; it does not use liquidctl hardware fan curves.
• Writes once when a model becomes loaded and once after it unloads; it does not continually rewrite fan duty while state is unchanged.
• Uses a 12-second unload debounce so quick model swaps do not cause unnecessary fan-speed cycling.
• If the Ollama API is unavailable, fan speeds are left unchanged.
• A manual case-fan Apply temporarily overrides the automation until the next Ollama load/unload transition.
• Normal and model-loaded case-fan duty are configurable and persisted in /data.

CPU and Cooling gauges

• CPU page Temperature is now a 0–100 °C gauge.
• Adds a CPU Utilization gauge with a 0–100% scale.
• Keeps Current Clock, Max Clock, and Governor as standard metric cards.
• Cooling page summary is now four gauges:
  • Coolant: 20–50 °C.
  • Pump: 0–3000 RPM.
  • CPU / Coolant Δ: 0–70 °C.
  • Radiator Average: 0–2500 RPM.
• Removes the old Cooling-page fixed-duty/manual-mode badge and explanatory warning/instruction text while retaining all safety behavior.

Ollama model inventory improvements

• Adds an Available Models table sourced from Ollama /api/tags.
• Models are mutually exclusive between Loaded Models and Available Models.
• When a model loads it moves into Loaded Models; when it unloads it returns to Available Models.
• Uses /api/show to enrich installed-model metadata without loading the model.
• Persists a small per-model metadata cache under /data so parameter size, quantization, context, and other known details remain available when Ollama does not report them while unloaded.
• Changes Unload to Unload In.
• Prefixes the displayed Ollama server version with v.
• Ollama GPU VRAM now shows Ollama VRAM usage over total GPU VRAM, for example 6.2 GiB / 8.0 GiB.

v1.6.1 features retained

• Commander ST hardware fan-curve writes remain fail-closed because the current liquidctl curve path is unreliable on this controller.
• Individual fixed-duty controls remain available for all six fans.
• Pump fixed-duty modes remain available at 75%, 85%, and 100%.
• CPU + GPU utilization history with 1m / 5m / 15m switching and fixed 0–100% scale.
• CPU, NVIDIA GPU, AIO coolant, and pump Overview gauges.
• Combined CPU / GPU / coolant temperature history with 1m / 5m / 15m switching.
• CPU logical-thread utilization bars with slowly decaying trailing markers.
• Conservative Ollama monitoring through the Ollama HTTP API plus existing /proc and NVIDIA process telemetry.
• No Docker socket and no Docker-log access.
• Compact network header telemetry.
• GPU page order: Engine Utilization, Thermals & Limits, Performance, GPU Processes.
• Serialized Commander ST reads/writes with transient-response retry handling and last-known-good telemetry fallback.

Persistent data

The TrueNAS deployment mounts:

/mnt/Holland Fast/hardware-monitor/data:/data

The app stores:

• /data/hardware_monitor.db — administrator account hash, cooling-control state, Ollama Fan Boost settings, and cached Ollama model metadata.
• /data/session_secret — Flask session-signing secret.

Temperature/utilization histories and CPU trailing markers remain memory-only and are not written to disk.

Ollama connectivity

The TrueNAS compose maps host.docker.internal to Docker's host gateway and defaults to:

http://host.docker.internal:11434

No Docker socket or Docker log access is used.

Image

github.hollandayinn.com/testing/hollandnas-hardware-monitor:1.7.0

Dashboard

http://<TRUENAS-IP>:8765