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thermal: van-thermal daemon (CPU+NVMe monitor, alert, log)

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Single sysfs sample loop drives three jobs off one daemon (modeled on
van-failover):

- live state at /run/van-thermal/state.json; new Cockpit "Temperatures"
  card reads it in the existing 5s loop (no per-refresh `sensors` shell-out)
- journal alerts on ok<->warn<->crit crossings, with clear_margin hysteresis
- throttled, self-rotating CSV history at /var/log/van-thermal.csv

Sensors resolved by hwmon name+label (coretemp/Package id 0, nvme/Composite),
never by hwmonN index (not stable across boots). Defaults: CPU warn 80 /
crit 95, NVMe warn 65 / crit 70. deploy.sh installs + enables the service.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Andreas Wrede
2026-06-28 21:32:13 -04:00
co-authored by Claude Opus 4.8
parent 35466f0141
commit ef6c1ce182
8 changed files with 289 additions and 3 deletions
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cockpit/vanrouter/vanrouter.css
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@@ -12,6 +12,7 @@ th { color: #6a6e73; font-weight: 600; }
.pill { padding: 2px 8px; border-radius: 10px; font-size: 12px; white-space: nowrap; }
.ok { background: #bde5b8; color: #1e4f18; }
.bad { background: #f0b8b8; color: #5f1414; }
.warn { background: #f5d9a8; color: #5f4414; }
.muted { color: #6a6e73; font-size: 12px; }
.active-wan { font-weight: 700; color: #0066cc; }
.btn { margin-left: 6px; padding: 3px 10px; cursor: pointer; }