slice 9: host-health view on the monitoring page (v0.39.0)

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>
This commit is contained in:
2026-06-10 16:16:15 +02:00
parent 4c9065381b
commit d8d1e17758
8 changed files with 406 additions and 35 deletions
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@@ -1,5 +1,19 @@
## Changelog
### v0.39.0 — slice 9: host metrics in the controller (customer host-health view) (2026-06-10)
The customer-facing half of slice 9. Pairs with `felhom-agent` v0.14.0. The de-privileged controller (slice 8C) sees only its own cgroup, so it can't read the host. The monitoring page now shows the **real Proxmox box** — CPU% + load, memory used/total, **CPU/chassis temperature** (or "n/a" when the hardware exposes none), uptime, and **per-storage capacity** (used/total bar, thin-pool fill, disk temp/wear) — proxied from the agent's new `GET /host/metrics`.
#### Added (`internal/agentapi`)
- **`Client.HostMetrics(ctx)`** — calls the agent's `GET /host/metrics` over the leaf-pinned, per-guest-token channel (same client as the 8C disk proxy) and returns `HostMetricsResponse` (host block + per-storage targets). New mirror structs `HostMetrics` (with nullable `CPUTempC`), `StorageTarget`, `ThinPoolFill`, `SmartSummary` (subset — only the fields the UI renders; unknown wire keys ignored).
#### Added (`internal/web`)
- **`ServeHostMetricsAPI`** (`agent_host_metrics_handler.go`) — a thin read-only proxy: `GET /api/host-metrics` → agent `GET /host/metrics`. Returns the `{ok,data,error}` envelope; 503 when the local API is not configured (unprovisioned guest), 502 on an agent error. Wired in `main.go` behind `RequireAuth` (GET-only → no CSRF wrapper).
- **Monitoring view** (`templates/monitoring.html`): a new **"Szerver állapota (gazdagép)"** card at the top renders the agent's host block + per-storage capacity bars (reusing the existing `system-bar`/`storage-item` styling). `cpu_temp_c: null` renders as **"n/a"** cleanly. Polls `/api/host-metrics` every **8 s** while the page is open (the host view is a live snapshot, distinct from the controller's own 60 s metric charts); shows a yellow "nem elérhető" banner when the agent is unreachable.
#### Tests
- `agentapi/host_metrics_test.go`: decodes host + storage (thin-pool, SMART temp + NVMe wear), USB drive's null SMART, and a null `cpu_temp_c` → nil pointer.
### v0.38.0 — slice 8B.2: quiesce downtime optimization (resume at `snapshotted`) (2026-06-10)
The controller half of slice 8B.2. Pairs with `felhom-agent` v0.13.0. The quiesce loop now resumes
+32 -35
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@@ -1,43 +1,40 @@
# REPORT — slice 8B.2 (controller half): resume at `snapshotted` (v0.38.0) (2026-06-10)
# REPORT — slice 9 (controller half): host-health view (v0.39.0) (2026-06-10)
> Overwrite-latest report. Cumulative history: [CHANGELOG.md](CHANGELOG.md). Implements the
> controller half of `TASK — Slice 8B.2`. Pairs with `felhom-agent` v0.13.0. No hub change.
> Overwrite-latest report. Cumulative history: [CHANGELOG.md](CHANGELOG.md).
## Outcome
## What was implemented
The quiesce loop (8B) kept the app stopped for the **whole backup**. In snapshot mode the app only
needs to be stopped until the **storage snapshot** is taken; after that vzdump reads from the
snapshot. The controller now resumes its app at the agent's **`snapshotted`** phase instead of
`done` — app downtime drops from *whole-backup* to *until-snapshot*, with no loss of app-consistency.
**Measured live: ~3s vs ~23s (~87% cut)**, restore still clean.
The customer-facing half of **slice 9**. Pairs with `felhom-agent` v0.14.0. The de-privileged
controller (slice 8C) sees only its own cgroup, so it can't read the host. The monitoring page now
shows the **real Proxmox box**, proxied from the agent's new `GET /host/metrics`.
## What landed (`internal/quiesce`)
### `internal/agentapi` — client method
- **`Client.HostMetrics(ctx)`** — calls the agent's `GET /host/metrics` over the leaf-pinned,
per-guest-token channel (same client as the 8C disk proxy). New mirror structs `HostMetrics` (with
nullable `CPUTempC`), `StorageTarget`, `ThinPoolFill`, `SmartSummary` (a **subset** — only the
fields the UI renders; unknown wire keys ignored).
- The status-poll loop **resumes (`StartStack` + clears the marker) at `snapshotted`**, then **keeps
polling to `done`/`failed`** — so a new backup isn't started until this one truly finishes and a
post-snapshot failure is still observed (the backup isn't "successful" until `done`; the early
resume does not mark it done).
- **Fallback:** if `snapshotted` never arrives (stop/downgraded storage), it resumes at `done`
exactly as 8B. The agent only emits `snapshotted` when the actual mode is snapshot.
- **Crash-safety unchanged:** marker written before stop; guaranteed unquiesce (deferred); startup
`Recover()`. A failure *after* `snapshotted` is harmless — the app is already up.
### `internal/web` — proxy + UI
- **`ServeHostMetricsAPI`** (`agent_host_metrics_handler.go`) — a thin read-only proxy:
`GET /api/host-metrics` → agent `GET /host/metrics`. Returns the `{ok,data,error}` envelope; 503
when the local API is not configured (unprovisioned guest), 502 on an agent error. Wired in
`main.go` behind `RequireAuth` (GET-only → no CSRF wrapper).
- **Monitoring view** (`templates/monitoring.html`): a new **"Szerver állapota (gazdagép)"** card at
the top renders the host block (CPU% + load, memory used/total, **CPU temp** or **"n/a"** when
null, uptime) + per-storage capacity bars (used/total, thin-pool fill, disk temp/wear), reusing
the existing `system-bar`/`storage-item` styling. Polls `/api/host-metrics` every **8 s** while the
page is open (a live snapshot, distinct from the controller's own 60 s charts); yellow "nem
elérhető" banner when the agent is unreachable.
## Tests
## Tests (green)
- `agentapi/host_metrics_test.go`: decodes host + storage (thin-pool, SMART temp + NVMe wear), USB
drive's null SMART, and a null `cpu_temp_c` → nil pointer.
- `go build ./...` + `go test ./internal/agentapi ./internal/web` green.
`go build ./...` + `go test ./...` green. quiesce: resume at `snapshotted` (RESUME event before
`done`, marker cleared, then tracked to `done`); stop-mode fallback (resume at `done`, no
`snapshotted`); fail-after-`snapshotted` (single resume, app stays up); the 8B crash-safety tests
stay green.
## Versioning / docs
- Version `0.38.0 → 0.39.0` (set at build via ldflags); `CHANGELOG.md` + `controller/README.md`
(Monitoring → "Host (Proxmox box) Health" section) updated.
## Live validation (demo-felhom)
A provisioned controller v0.38.0 with a postgres stack, short quiesce poll: timeline —
`quiescing [pgtest]` 12:58:45 → `snapshotted — resuming app early` 12:58:48 → `backup done` 12:59:08.
**App downtime ≈ 3s** (vs ≈ 23s to `done`). The snapshot backup restored to a scratch guest came up
**clean** (`database system was shut down at 12:58:45`, no WAL replay) — the early resume preserved
app-consistency. The controller kept tracking to `done` after resuming (no overlapping backup).
## Deferred / dependency
Snapshot-capable storage (lvm-thin/ZFS) required for the win; stop/downgraded storage falls back to
resume-at-`done` (8B). No consistency-contract or crash-safety change. No secrets committed.
## Pending
- **Build + deploy** controller v0.39.0 to the demo nodes and live-validate the monitoring page
against the real N100 (cross-check vs `pvesh`/`free`/`df`).
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@@ -666,6 +666,14 @@ Full-page system monitor at `/monitoring`:
Chart.js 4.4.7 embedded locally (works in offline environments), dark theme matching site design.
#### Host (Proxmox box) Health — agent-proxied (slice 9, `internal/agentapi` + `agent_host_metrics_handler.go`)
The de-privileged controller (slice 8C) sees only its own cgroup and cannot read the host. The top card of `/monitoring` ("Szerver állapota (gazdagép)") instead shows the **real Proxmox box**, proxied from the host agent's `GET /host/metrics`:
- **Host block**: CPU% + load average, memory used/total, **CPU/chassis temperature** (or "n/a" when the hardware exposes no sensor — graceful-null), uptime.
- **Per-storage capacity**: a used/total bar per host storage target, with thin-pool fill (a full lvmthin pool corrupts every guest on it) and disk SMART temperature/wear.
Path: `GET /api/host-metrics``Client.HostMetrics()` (leaf-pinned, per-guest-token agentapi client) → agent `GET /host/metrics`. Host-wide and token-authed (assumption: **one customer per host** — the home-server model). It is a **live** fetch (a fresh agent collect, not the 15-minute hub snapshot), so the page polls it every **8 s** while open. When the agent is unconfigured/unreachable the card shows a "nem elérhető" banner; the controller's own metric charts are unaffected.
#### Alert System (`internal/web/alerts.go`)
State-based alerts displayed on all pages:
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@@ -647,6 +647,10 @@ func main() {
// disk execution; the controller forwards list/assign/eject/format.
mux.Handle("/api/disks", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(webServer.ServeDiskAPI))))
mux.Handle("/api/disks/", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(webServer.ServeDiskAPI))))
// Host metrics API — thin proxy to the host agent (slice 9). Read-only host-wide health +
// per-storage capacity for the monitoring view; the de-privileged controller can't read the
// host itself. GET only, so no CSRF wrapper needed.
mux.Handle("/api/host-metrics", webServer.RequireAuth(http.HandlerFunc(webServer.ServeHostMetricsAPI)))
// App export/import API routes handled by web server
mux.Handle("/api/export/", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(webServer.ServeExportAPI))))
// Debug API routes handled by web server (debug-mode gating inside handler)
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@@ -267,6 +267,78 @@ func (c *Client) FormatDisk(ctx context.Context, device, fstype string) (FormatR
return out, nil
}
// ---- slice 9: host metrics (the customer host-health view) -------------------------------
// HostMetrics mirrors the agent's GET /host/metrics `host` block (shared HostMetrics wire shape).
// CPUTempC is a pointer so a host with no temp sensor is null ("n/a"), distinct from a real 0.
type HostMetrics struct {
Node string `json:"node"`
CPUPercent float64 `json:"cpu_percent"` // 0100
MemoryTotalBytes int64 `json:"memory_total_bytes"`
MemoryUsedBytes int64 `json:"memory_used_bytes"`
MemoryPercent float64 `json:"memory_percent"`
DiskTotalBytes int64 `json:"disk_total_bytes"` // host root fs
DiskUsedBytes int64 `json:"disk_used_bytes"`
DiskPercent float64 `json:"disk_percent"`
LoadAvg []string `json:"loadavg"`
UptimeSeconds int64 `json:"uptime_seconds"`
CPUTempC *int `json:"cpu_temp_c"` // °C or null ("n/a")
}
// ThinPoolFill mirrors the agent's lvmthin pool fill (a full thin-pool corrupts every guest on it).
type ThinPoolFill struct {
DataUsedFraction float64 `json:"data_used_fraction"`
MetadataUsedFraction *float64 `json:"metadata_used_fraction"`
}
// SmartSummary mirrors the agent's per-disk SMART health (only the fields the UI renders). Pointers
// are null when the device type does not expose that attribute.
type SmartSummary struct {
Health string `json:"health"` // PASSED | FAILING | UNKNOWN
TemperatureC *int `json:"temperature_c"`
PercentageUsed *int `json:"percentage_used"` // NVMe wear (%); null for SATA/USB
}
// StorageTarget mirrors the agent's GET /host/metrics storage_targets entry (the per-storage
// capacity + health the monitoring view renders). It is a SUBSET of the agent's wire shape — only
// the fields the UI reads; unknown JSON keys are ignored.
type StorageTarget struct {
Name string `json:"name"`
Type string `json:"type"`
State string `json:"state"`
Reachable bool `json:"reachable"`
TotalBytes int64 `json:"total_bytes"`
UsedBytes int64 `json:"used_bytes"`
AvailBytes int64 `json:"avail_bytes"`
UsedFraction float64 `json:"used_fraction"`
Content string `json:"content"`
MountPath string `json:"mount_path"`
ClassHint string `json:"class_hint"`
ThinPool *ThinPoolFill `json:"thin_pool,omitempty"`
Smart SmartSummary `json:"smart"`
}
// HostMetricsResponse mirrors the agent's GET /host/metrics payload (host-wide health + per-storage
// capacity). Host-wide and token-authed (one-customer-per-host); a fresh collect, not a snapshot.
type HostMetricsResponse struct {
VMID int `json:"vmid"`
Host HostMetrics `json:"host"`
StorageTargets []StorageTarget `json:"storage_targets"`
}
// HostMetrics calls GET /host/metrics and returns the host's live health + per-storage capacity.
func (c *Client) HostMetrics(ctx context.Context) (HostMetricsResponse, error) {
var out HostMetricsResponse
body, err := c.get(ctx, "/host/metrics")
if err != nil {
return out, err
}
if err := json.Unmarshal(body, &out); err != nil {
return out, fmt.Errorf("agentapi: decode /host/metrics: %w", err)
}
return out, nil
}
// get issues an authenticated GET and unwraps the {ok,data,error} envelope.
func (c *Client) get(ctx context.Context, path string) (json.RawMessage, error) {
req, err := http.NewRequestWithContext(ctx, http.MethodGet, c.baseURL+path, nil)
@@ -0,0 +1,84 @@
package agentapi
import (
"context"
"net/http"
"net/http/httptest"
"strings"
"testing"
)
// hostMetricsStub serves a GET /host/metrics payload with a populated host block (CPU temp set)
// and one storage target carrying a thin-pool + SMART temp.
func hostMetricsStub(cpuTempNull bool) (*httptest.Server, string) {
temp := `47`
if cpuTempNull {
temp = `null`
}
mux := http.NewServeMux()
mux.HandleFunc("GET /host/metrics", func(w http.ResponseWriter, r *http.Request) {
_, _ = w.Write([]byte(`{"ok":true,"data":{
"vmid":8200,
"host":{"node":"demo-felhom","cpu_percent":12.5,"memory_total_bytes":17179869184,
"memory_used_bytes":4294967296,"memory_percent":25,"loadavg":["0.10","0.20","0.15"],
"uptime_seconds":86400,"cpu_temp_c":` + temp + `},
"storage_targets":[
{"name":"local-lvm","type":"lvmthin","state":"attached","reachable":true,
"total_bytes":100000000000,"used_bytes":42000000000,"used_fraction":0.42,
"thin_pool":{"data_used_fraction":0.42,"metadata_used_fraction":null},
"smart":{"health":"PASSED","temperature_c":38,"percentage_used":2}},
{"name":"usb-backup","type":"usb","state":"attached","reachable":true,
"total_bytes":2000000000000,"used_bytes":500000000000,"used_fraction":0.25,
"smart":{"health":"PASSED","temperature_c":null,"percentage_used":null}}
]}}`))
})
s := httptest.NewTLSServer(mux)
return s, strings.TrimPrefix(s.URL, "https://")
}
func TestHostMetrics_DecodesHostAndStorage(t *testing.T) {
s, ep := hostMetricsStub(false)
defer s.Close()
c := clientFor(t, s, ep)
resp, err := c.HostMetrics(context.Background())
if err != nil {
t.Fatal(err)
}
if resp.Host.Node != "demo-felhom" || resp.Host.CPUPercent != 12.5 {
t.Fatalf("host = %+v", resp.Host)
}
if resp.Host.CPUTempC == nil || *resp.Host.CPUTempC != 47 {
t.Fatalf("cpu_temp_c = %v, want 47", resp.Host.CPUTempC)
}
if len(resp.StorageTargets) != 2 {
t.Fatalf("storage targets = %d, want 2", len(resp.StorageTargets))
}
lvm := resp.StorageTargets[0]
if lvm.ThinPool == nil || lvm.ThinPool.DataUsedFraction != 0.42 {
t.Errorf("thin_pool = %+v", lvm.ThinPool)
}
if lvm.Smart.TemperatureC == nil || *lvm.Smart.TemperatureC != 38 {
t.Errorf("smart temp = %v, want 38", lvm.Smart.TemperatureC)
}
if lvm.Smart.PercentageUsed == nil || *lvm.Smart.PercentageUsed != 2 {
t.Errorf("smart wear = %v, want 2", lvm.Smart.PercentageUsed)
}
// USB drive: SMART temp/wear are null (USB bridge exposes no SMART) → graceful null.
if resp.StorageTargets[1].Smart.TemperatureC != nil {
t.Errorf("usb smart temp = %v, want nil", resp.StorageTargets[1].Smart.TemperatureC)
}
}
// A null cpu_temp_c decodes to a nil pointer (the UI renders "n/a").
func TestHostMetrics_NullCPUTemp(t *testing.T) {
s, ep := hostMetricsStub(true)
defer s.Close()
c := clientFor(t, s, ep)
resp, err := c.HostMetrics(context.Background())
if err != nil {
t.Fatal(err)
}
if resp.Host.CPUTempC != nil {
t.Fatalf("cpu_temp_c = %v, want nil (n/a)", resp.Host.CPUTempC)
}
}
@@ -0,0 +1,38 @@
package web
import (
"net/http"
)
// Agent-backed host metrics (slice 9).
//
// The de-privileged controller (slice 8C) sees only its own cgroup, so it cannot read host
// health itself. This thin proxy forwards GET /api/host-metrics to the agent's GET /host/metrics
// and returns the host-wide view (cpu%/mem/load/uptime/cpu-temp + per-storage capacity) for the
// monitoring page. It reuses the same pinned agentapi.Client + {ok,data,error} envelope as the
// disk proxy (agent_disk_handlers.go). Read-only; no CSRF mutation.
// ServeHostMetricsAPI proxies GET /api/host-metrics → agent GET /host/metrics.
// Wired in main.go behind RequireAuth.
func (s *Server) ServeHostMetricsAPI(w http.ResponseWriter, r *http.Request) {
if s.isDebug() {
s.logger.Printf("[DEBUG] [web] ServeHostMetricsAPI: %s %s from %s", r.Method, r.URL.Path, r.RemoteAddr)
}
if r.Method != http.MethodGet {
writeDiskJSON(w, http.StatusMethodNotAllowed, false, "method not allowed", nil)
return
}
client, err := s.agentClient()
if err != nil {
// Unprovisioned guest / no local API configured — the UI shows "host metrics unavailable".
writeDiskJSON(w, http.StatusServiceUnavailable, false, err.Error(), nil)
return
}
resp, err := client.HostMetrics(r.Context())
if err != nil {
s.logger.Printf("[ERROR] [web] host metrics via agent failed: %v", err)
writeDiskJSON(w, http.StatusBadGateway, false, err.Error(), nil)
return
}
writeDiskJSON(w, http.StatusOK, true, "", resp)
}
@@ -5,6 +5,44 @@
<h2>Rendszermonitor</h2>
</div>
<!-- Section 0: Host (Proxmox box) health — slice 9, served by the host agent over the local API.
The de-privileged controller can't read the host itself; this card shows the real box. -->
<div class="monitor-card" id="host-health-card">
<div class="monitor-card-header">
<h3>Szerver állapota (gazdagép)</h3>
<span class="sysinfo-value" id="host-health-updated" style="font-size:.75rem;color:var(--text-muted)"></span>
</div>
<div id="host-health-unavailable" class="monitoring-banner monitoring-banner-yellow" style="display:none">
A gazdagép metrikái jelenleg nem elérhetők.
</div>
<div id="host-health-body" style="display:none">
<div class="sysinfo-grid">
<div class="sysinfo-row">
<span class="sysinfo-label">CPU használat</span>
<span class="sysinfo-value" id="host-cpu"></span>
</div>
<div class="sysinfo-row">
<span class="sysinfo-label">Terhelés (load)</span>
<span class="sysinfo-value" id="host-load"></span>
</div>
<div class="sysinfo-row">
<span class="sysinfo-label">Memória</span>
<span class="sysinfo-value" id="host-mem"></span>
</div>
<div class="sysinfo-row">
<span class="sysinfo-label">CPU hőmérséklet</span>
<span class="sysinfo-value" id="host-temp"></span>
</div>
<div class="sysinfo-row">
<span class="sysinfo-label">Üzemidő</span>
<span class="sysinfo-value" id="host-uptime"></span>
</div>
</div>
<h4 style="margin:1rem 0 .5rem">Tárolók kapacitása</h4>
<div class="storage-bars" id="host-storage-bars"></div>
</div>
</div>
<!-- Section 1: System Overview -->
<div class="monitor-card">
<h3>Rendszer áttekintés</h3>
@@ -645,6 +683,118 @@
loadContainerDetail();
});
// =============================================
// HOST (PROXMOX BOX) HEALTH — slice 9, proxied from the host agent
// =============================================
function usageColorClass(pct) {
if (pct >= 85) return 'system-bar-red';
if (pct >= 70) return 'system-bar-yellow';
return 'system-bar-green';
}
function fmtBytesGB(bytes) {
if (!bytes || bytes <= 0) return '0 GB';
var gb = bytes / 1073741824;
if (gb >= 1024) return (gb / 1024).toFixed(2) + ' TB';
if (gb >= 100) return Math.round(gb) + ' GB';
return gb.toFixed(1) + ' GB';
}
function escapeHtml(s) {
return String(s).replace(/[&<>"']/g, function(c) {
return {'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[c];
});
}
function showHostUnavailable() {
document.getElementById('host-health-unavailable').style.display = '';
document.getElementById('host-health-body').style.display = 'none';
document.getElementById('host-health-updated').textContent = '';
}
function renderHostHealth(d) {
var h = d.host || {};
document.getElementById('host-health-unavailable').style.display = 'none';
document.getElementById('host-health-body').style.display = '';
// CPU % + load average
document.getElementById('host-cpu').textContent =
(h.cpu_percent != null ? h.cpu_percent.toFixed(1) : '') + '%';
var load = Array.isArray(h.loadavg) ? h.loadavg.join(' ') : '';
document.getElementById('host-load').textContent = load || '';
// Memory used/total
if (h.memory_total_bytes > 0) {
document.getElementById('host-mem').textContent =
fmtBytesGB(h.memory_used_bytes) + ' / ' + fmtBytesGB(h.memory_total_bytes) +
' (' + Math.round(h.memory_percent || 0) + '%)';
} else {
document.getElementById('host-mem').textContent = '';
}
// CPU temp — null renders as "n/a" cleanly (graceful-null from the agent)
document.getElementById('host-temp').textContent =
(h.cpu_temp_c == null) ? 'n/a' : (h.cpu_temp_c + ' °C');
// Uptime (reuse the existing formatter)
document.getElementById('host-uptime').textContent =
(h.uptime_seconds > 0) ? formatUptime(h.uptime_seconds) : '';
// Per-storage capacity bars
var bars = document.getElementById('host-storage-bars');
var targets = Array.isArray(d.storage_targets) ? d.storage_targets : [];
if (!targets.length) {
bars.innerHTML = '<div class="sysinfo-value" style="color:var(--text-muted)">Nincs tároló adat.</div>';
} else {
var html = '';
targets.forEach(function(t) {
var label = escapeHtml(t.name || '') + (t.type ? ' (' + escapeHtml(t.type) + ')' : '');
if (t.state && t.state !== 'attached') {
html += '<div class="storage-item storage-disconnected">' +
'<div class="storage-header"><span class="storage-label">' + label + '</span>' +
'<span class="storage-value badge-error" style="font-size:.75rem">Nem elérhető</span></div>' +
'<div class="system-bar"><div class="system-bar-disconnected"></div></div></div>';
return;
}
var pct = (t.used_fraction != null ? t.used_fraction * 100 : 0);
// Extra detail: thin-pool fill (corrupts every guest if full) + disk temp/wear.
var extra = [];
if (t.thin_pool && t.thin_pool.data_used_fraction != null) {
extra.push('thin-pool: ' + Math.round(t.thin_pool.data_used_fraction * 100) + '%');
}
if (t.smart) {
if (t.smart.temperature_c != null) extra.push(t.smart.temperature_c + ' °C');
if (t.smart.percentage_used != null) extra.push('kopás: ' + t.smart.percentage_used + '%');
}
var extraHtml = extra.length ? ' <span style="color:var(--text-muted);font-size:.75rem">· ' + escapeHtml(extra.join(' · ')) + '</span>' : '';
html += '<div class="storage-item">' +
'<div class="storage-header">' +
'<span class="storage-label">' + label + extraHtml + '</span>' +
'<span class="storage-value">' + fmtBytesGB(t.used_bytes) + ' / ' + fmtBytesGB(t.total_bytes) +
' (' + Math.round(pct) + '%)</span></div>' +
'<div class="system-bar"><div class="system-bar-fill ' + usageColorClass(pct) +
'" style="width:' + Math.min(100, pct).toFixed(1) + '%"></div></div></div>';
});
bars.innerHTML = html;
}
var now = new Date();
document.getElementById('host-health-updated').textContent =
'Frissítve: ' + now.toLocaleTimeString('hu-HU', {timeZone: budaTZ, hour: '2-digit', minute: '2-digit', second: '2-digit'});
}
async function loadHostMetrics() {
try {
var resp = await fetch('/api/host-metrics');
var json = await resp.json();
if (!json.ok || !json.data) { showHostUnavailable(); return; }
renderHostHealth(json.data);
} catch(e) {
console.error('Failed to load host metrics:', e);
showHostUnavailable();
}
}
// =============================================
// STATIC SYSTEM INFO
// =============================================
@@ -693,6 +843,7 @@
loadSysInfo();
loadSystemMetrics();
loadContainerSummary();
loadHostMetrics();
// Auto-refresh every 60 seconds
setInterval(function() {
@@ -701,6 +852,9 @@
if (detailContainer) loadContainerDetail();
}, 60000);
// Host (Proxmox box) health is a live snapshot — poll it more often while the page is open.
setInterval(loadHostMetrics, 8000);
})();
</script>