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Add agentapi HostMetrics() + a thin /api/host-metrics proxy to the agent's new GET /host/metrics, and a 'Szerver allapota (gazdagep)' card on the monitoring page rendering host CPU%/load/mem/CPU-temp(n/a)/uptime + per- storage capacity bars (thin-pool fill, disk temp/wear). Polls every 8s. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
41 lines
2.3 KiB
Markdown
41 lines
2.3 KiB
Markdown
# REPORT — slice 9 (controller half): host-health view (v0.39.0) (2026-06-10)
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> Overwrite-latest report. Cumulative history: [CHANGELOG.md](CHANGELOG.md).
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## What was implemented
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The customer-facing half of **slice 9**. Pairs with `felhom-agent` v0.14.0. The de-privileged
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controller (slice 8C) sees only its own cgroup, so it can't read the host. The monitoring page now
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shows the **real Proxmox box**, proxied from the agent's new `GET /host/metrics`.
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### `internal/agentapi` — client method
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- **`Client.HostMetrics(ctx)`** — calls the agent's `GET /host/metrics` over the leaf-pinned,
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per-guest-token channel (same client as the 8C disk proxy). New mirror structs `HostMetrics` (with
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nullable `CPUTempC`), `StorageTarget`, `ThinPoolFill`, `SmartSummary` (a **subset** — only the
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fields the UI renders; unknown wire keys ignored).
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### `internal/web` — proxy + UI
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- **`ServeHostMetricsAPI`** (`agent_host_metrics_handler.go`) — a thin read-only proxy:
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`GET /api/host-metrics` → agent `GET /host/metrics`. Returns the `{ok,data,error}` envelope; 503
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when the local API is not configured (unprovisioned guest), 502 on an agent error. Wired in
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`main.go` behind `RequireAuth` (GET-only → no CSRF wrapper).
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- **Monitoring view** (`templates/monitoring.html`): a new **"Szerver állapota (gazdagép)"** card at
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the top renders the host block (CPU% + load, memory used/total, **CPU temp** or **"n/a"** when
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null, uptime) + per-storage capacity bars (used/total, thin-pool fill, disk temp/wear), reusing
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the existing `system-bar`/`storage-item` styling. Polls `/api/host-metrics` every **8 s** while the
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page is open (a live snapshot, distinct from the controller's own 60 s charts); yellow "nem
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elérhető" banner when the agent is unreachable.
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## Tests (green)
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- `agentapi/host_metrics_test.go`: decodes host + storage (thin-pool, SMART temp + NVMe wear), USB
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drive's null SMART, and a null `cpu_temp_c` → nil pointer.
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- `go build ./...` + `go test ./internal/agentapi ./internal/web` green.
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## Versioning / docs
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- Version `0.38.0 → 0.39.0` (set at build via ldflags); `CHANGELOG.md` + `controller/README.md`
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(Monitoring → "Host (Proxmox box) Health" section) updated.
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## Pending
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- **Build + deploy** controller v0.39.0 to the demo nodes and live-validate the monitoring page
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against the real N100 (cross-check vs `pvesh`/`free`/`df`).
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