k8s: exclude passthrough source keys from jbod-mqtt secret

excludeRaw alone left all home_assistant source keys (api_key, vantage_*, etc.)
in the synced secret, so envFrom injected them into the web container. Add
transformation.excludes ['.*'] so only the templated MQTT_USERNAME/MQTT_PASSWORD
remain.

Dockerfile

@@ -30,6 +30,27 @@ COPY services/ services/
 
 CMD ["python", "-u", "poller.py"]
 
+# ---- Target: host-poller (chassis IPMI/iDRAC + CPU + on-metal drives) ----
+# Privileged at runtime (needs /dev/ipmi0 + raw disks). Carries ipmitool +
+# smartmontools; no SAS-shelf tooling.
+FROM python:3.13-slim AS host-poller
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    ipmitool \
+    smartmontools \
+    util-linux \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+COPY requirements-poller.txt .
+RUN pip install --no-cache-dir -r requirements-poller.txt
+
+COPY host_poller.py .
+COPY services/ services/
+
+CMD ["python", "-u", "host_poller.py"]
+
 # ---- Target: web (read-only consumer) ----
 # Unprivileged at runtime; no hardware tools. Serves REST/UI + MQTT, reads Redis.
 FROM python:3.13-slim AS web

build.sh

@@ -16,10 +16,11 @@ cd "$(dirname "$0")"
 # First arg is the target if it's a known one; otherwise it's treated as the
 # commit message (backward-compatible with `./build.sh "message"`).
 case "${1:-}" in
-    poller) TARGETS="poller"; MSG="${2:-Build and push images}" ;;
-    web)    TARGETS="web";    MSG="${2:-Build and push images}" ;;
-    all|"") TARGETS="poller web"; MSG="${2:-Build and push images}" ;;
-    *)      TARGETS="poller web"; MSG="${1}" ;;
+    poller)      TARGETS="poller";      MSG="${2:-Build and push images}" ;;
+    host-poller) TARGETS="host-poller"; MSG="${2:-Build and push images}" ;;
+    web)         TARGETS="web";         MSG="${2:-Build and push images}" ;;
+    all|"")      TARGETS="poller host-poller web"; MSG="${2:-Build and push images}" ;;
+    *)           TARGETS="poller host-poller web"; MSG="${1}" ;;
 esac
 TARGET="${TARGETS// /+}"
 

compose.infra.yml

@@ -34,6 +34,33 @@ services:
     depends_on:
       - redis
 
+  # Chassis producer: IPMI/iDRAC + CPU coretemp + on-metal drives → Redis.
+  # Separate from the SAS poller (different subsystem); writes host_sensors +
+  # host_drives. The web consumer publishes these on the hub device.
+  host-poller:
+    image: docker.adamksmith.xyz/jbod-host-poller:latest   # pin to a SHA in deploy
+    container_name: jbod-host-poller
+    restart: unless-stopped
+    privileged: true
+    network_mode: host
+    volumes:
+      - /dev:/dev
+      - /sys:/sys:ro
+      - /run/udev:/run/udev:ro
+    environment:
+      - TZ=America/Denver
+      - REDIS_HOST=127.0.0.1
+      - REDIS_PORT=6379
+      - REDIS_DB=0
+      - HOST_ENV_INTERVAL=60     # IPMI/iDRAC + CPU — responsive (inlet temp 1/min)
+      - HOST_DRIVE_INTERVAL=300  # on-metal SMART — gentle, isolated from env
+      - POLL_DRIVE_GAP=0.5
+      - POLL_CONCURRENCY=1
+      - POLL_STARTUP_JITTER=10
+      - POLL_DATA_TTL=900
+    depends_on:
+      - redis
+
   redis:
     image: redis:7-alpine
     container_name: jbod-redis

host_poller.py

@@ -0,0 +1,168 @@
+"""Host-poller — server chassis temps, split into two independent loops.
+
+Separate process/container from the SAS poller. Two concurrent loops in one
+process, sharing the single-instance lock AND the per-process hardware gate
+(so IPMI and SMART never hit hardware at the same instant), but on separate
+schedules:
+
+  - env loop   (fast):  IPMI/iDRAC env + CPU coretemp  -> jbod:host_sensors
+  - drive loop (slow):  on-metal drive SMART           -> jbod:host_drives
+
+Keeping SMART on a gentler cadence than the responsive inlet/CPU reads. Each
+loop has its own heartbeat + restart-storm guard. Host-drive ZFS annotation
+reuses jbod:zfs_map written by the SAS poller.
+"""
+import asyncio
+import logging
+import os
+import random
+import socket
+import time
+
+from services import store
+from services.cache import close_cache, init_cache, redis_available
+from services.host import get_host_drives
+from services.host_sensors import read_coretemp, read_hwmon_env, read_ipmi_temps
+
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
+)
+logger = logging.getLogger("host-poller")
+
+ENV_INTERVAL = int(os.environ.get("HOST_ENV_INTERVAL", "60"))
+DRIVE_INTERVAL = int(os.environ.get("HOST_DRIVE_INTERVAL", "300"))
+STARTUP_JITTER = float(os.environ.get("POLL_STARTUP_JITTER", "10"))
+LOCK_TTL = 30
+
+TOKEN = f"{socket.gethostname()}-hostpoll-{os.getpid()}"
+
+
+async def sweep_env() -> None:
+    """IPMI/iDRAC environmental + CPU temps (the responsive loop)."""
+    t0 = time.monotonic()
+    errors: list[str] = []
+    try:
+        ipmi = await read_ipmi_temps()
+    except Exception as e:
+        errors.append(f"ipmi:{e}")
+        ipmi = []
+    env = [s for s in ipmi if s.get("kind") == "env"] + read_hwmon_env()
+    cpu = read_coretemp() or [s for s in ipmi if s.get("kind") == "cpu"]
+
+    await store.set_host_sensors({
+        "node": socket.gethostname(),
+        "env": env,
+        "cpu": cpu,
+        "ts": store.now(),
+    })
+    await store.set_meta({
+        "last_sweep_ts": store.now(),
+        "last_sweep_duration": round(time.monotonic() - t0, 1),
+        "env_count": len(env),
+        "cpu_count": len(cpu),
+        "errors": errors[:20],
+        "interval": ENV_INTERVAL,
+    }, key=store.K_HOST_ENV_META)
+    logger.info("env sweep: %d env, %d cpu, %d error(s)", len(env), len(cpu), len(errors))
+
+
+async def sweep_drives() -> None:
+    """On-metal (non-enclosure) drive SMART (the gentle loop)."""
+    t0 = time.monotonic()
+    errors: list[str] = []
+    drives: list = []
+    try:
+        pool_map = await store.get_zfs_map()
+        drives = await get_host_drives(pool_map)
+        await store.set_host_drives(drives)
+    except Exception as e:
+        errors.append(f"hostdrives:{e}")
+    await store.set_meta({
+        "last_sweep_ts": store.now(),
+        "last_sweep_duration": round(time.monotonic() - t0, 1),
+        "host_drive_count": len(drives),
+        "errors": errors[:20],
+        "interval": DRIVE_INTERVAL,
+    }, key=store.K_HOST_DRIVE_META)
+    logger.info("drive sweep: %d drives, %.1fs, %d error(s)",
+                len(drives), round(time.monotonic() - t0, 1), len(errors))
+
+
+async def run_loop(name: str, fn, interval: int, meta_key: str) -> None:
+    """Run `fn` every `interval`s, with a restart-storm guard from its meta."""
+    meta = await store.get_meta(key=meta_key)
+    if meta and meta.get("last_sweep_ts"):
+        since = store.now() - meta["last_sweep_ts"]
+        if 0 <= since < interval:
+            wait = interval - since
+            logger.info("%s: last sweep %.0fs ago — deferring first %.0fs", name, since, wait)
+            await asyncio.sleep(wait)
+    while True:
+        t0 = time.monotonic()
+        try:
+            await fn()
+        except asyncio.CancelledError:
+            raise
+        except Exception as e:
+            logger.error("%s loop error: %s", name, e)
+        await asyncio.sleep(max(5, interval - (time.monotonic() - t0)))
+
+
+async def lock_refresher() -> None:
+    while True:
+        await asyncio.sleep(LOCK_TTL / 3)
+        try:
+            ok = await store.refresh_lock(TOKEN, LOCK_TTL, key=store.K_HOST_LOCK)
+        except Exception as e:
+            logger.error("lock refresh error (%s) — exiting", e)
+            os._exit(1)
+        if not ok:
+            logger.error("lost host-poller lock — exiting")
+            os._exit(1)
+
+
+def _critical_task_done(task: asyncio.Task) -> None:
+    if task.cancelled():
+        return
+    logger.error("critical task ended unexpectedly — exiting")
+    os._exit(1)
+
+
+async def main() -> None:
+    await init_cache()
+    while not redis_available():
+        logger.warning("Redis unavailable — host-poller needs Redis; retrying in 5s")
+        await asyncio.sleep(5)
+        await init_cache()
+
+    while not await store.acquire_lock(TOKEN, LOCK_TTL, key=store.K_HOST_LOCK):
+        logger.warning("another host-poller holds the lock; waiting %ds", LOCK_TTL // 2)
+        await asyncio.sleep(LOCK_TTL // 2)
+    logger.info("host-poller lock acquired (%s)", TOKEN)
+
+    refresher = asyncio.create_task(lock_refresher())
+    refresher.add_done_callback(_critical_task_done)
+
+    if os.geteuid() != 0:
+        logger.warning("not running as root — ipmitool/smartctl may fail")
+
+    await asyncio.sleep(random.uniform(0, STARTUP_JITTER))
+
+    env_task = asyncio.create_task(
+        run_loop("env", sweep_env, ENV_INTERVAL, store.K_HOST_ENV_META))
+    drive_task = asyncio.create_task(
+        run_loop("drive", sweep_drives, DRIVE_INTERVAL, store.K_HOST_DRIVE_META))
+    try:
+        await asyncio.gather(env_task, drive_task)
+    finally:
+        for t in (refresher, env_task, drive_task):
+            t.cancel()
+        await close_cache()
+
+
+if __name__ == "__main__":
+    try:
+        asyncio.run(main())
+    except KeyboardInterrupt:
+        pass

k8s/README.md

@@ -0,0 +1,66 @@
+# jbod-monitor on RKE2 (DaemonSet)
+
+Per-node self-contained deployment for Kubernetes worker nodes that can't run
+the docker-compose stack. Each opted-in node runs one pod (`host-poller` +
+`redis` + `web`) and publishes its own Home Assistant device
+(`JBOD Monitor (<node>)`) over MQTT.
+
+This mirrors the docker-compose stack with **no code changes** — each node is
+independent, exactly like the standalone hosts.
+
+## What it collects
+
+- **host-poller** (privileged, hostPath `/dev`+`/sys`): IPMI/iDRAC env, CPU
+  coretemp, on-metal drive SMART → node-local redis.
+- **web**: reads redis, publishes per-node MQTT discovery to the broker.
+- No SAS poller (no SES enclosures on these nodes). Consequence: host-drive
+  entities have no ZFS pool label (no zfs_map producer).
+
+## Prereqs — verified 2026-06-16
+
+1. **Registry pull**: registry requires auth. `registry-cred-vaultstaticsecret.yaml`
+   syncs `secret/registry/nexus` → `docker-registry-cred` (dockerconfigjson),
+   referenced as `imagePullSecrets` in the DaemonSet. (Mirrors the cluster's
+   existing `*-registry-cred` pattern.)
+2. **VSO**: v1.3.0; `openbao-kubernetes` VaultAuth healthy; `transformation.templates`
+   supported. No existing VSS in the cluster uses transformation, so watch the
+   `jbod-mqtt` VSS status on first apply for template errors.
+3. **MQTT egress**: confirmed — a cluster pod reached `10.5.30.3:1883`.
+4. **Nodes**: pascal/currie/fermi are untainted → no tolerations needed.
+
+## Apply order
+
+```bash
+# 1. Label ONLY the intended nodes (do not blanket-label all workers):
+kubectl label node usco-dc-pascal usco-dc-currie usco-dc-fermi jbod-monitor=enabled
+#    (canary: label just usco-dc-fermi first)
+
+# 2. Namespace + DaemonSet:
+kubectl apply -f k8s/daemonset.yaml
+
+# 3. Secrets (VSO → docker-registry-cred + jbod-mqtt). Apply, then confirm sync:
+kubectl apply -f k8s/registry-cred-vaultstaticsecret.yaml
+kubectl apply -f k8s/mqtt-vaultstaticsecret.yaml
+kubectl -n jbod-monitor get vaultstaticsecret           # SYNCED=True for both
+kubectl -n jbod-monitor get secret jbod-mqtt -o jsonpath='{.data.MQTT_USERNAME}' | base64 -d
+
+# 4. Roll the DaemonSet so pods pick up the secrets if they raced ahead:
+kubectl -n jbod-monitor rollout restart daemonset/jbod-monitor
+```
+
+## Verify
+
+```bash
+kubectl -n jbod-monitor get pods -o wide        # one per labeled node
+kubectl -n jbod-monitor logs <pod> -c host-poller | grep sweep
+kubectl -n jbod-monitor logs <pod> -c web | grep -i mqtt   # "MQTT connected"
+```
+
+Then check Home Assistant for `JBOD Monitor (usco-dc-pascal|currie|fermi)`.
+
+## Notes
+
+- pascal (R620) already has an iDRAC "System Board Inlet Temp" in HA via another
+  integration — its env temp will partially duplicate; drives + CPU are net-new.
+- Pin image tags by SHA (already done: host-poller `514502e`, web `1839e9d`).
+- Removal: `kubectl delete -f k8s/daemonset.yaml` and unlabel the nodes.

k8s/daemonset.yaml

@@ -0,0 +1,103 @@
+# jbod-monitor on RKE2 nodes — per-node self-contained DaemonSet (Model A).
+#
+# Each scheduled node runs one pod = host-poller + redis + web, sharing the
+# pod's localhost (no hostNetwork needed). Only host-poller is privileged and
+# mounts /dev + /sys to read IPMI / SMART / coretemp. web egresses to the MQTT
+# broker and publishes a per-node HA device (MQTT_NODE_ID = spec.nodeName).
+#
+# No SAS poller (these nodes have no SES enclosures). NOTE: without it there is
+# no zfs_map, so host-drive entities won't carry a ZFS pool label.
+#
+# Target nodes are chosen by label — see k8s/README.md (label only
+# pascal/currie/fermi). Apply order: namespace -> VaultStaticSecret -> this.
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: jbod-monitor
+---
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: jbod-monitor
+  namespace: jbod-monitor
+  labels:
+    app: jbod-monitor
+spec:
+  selector:
+    matchLabels:
+      app: jbod-monitor
+  template:
+    metadata:
+      labels:
+        app: jbod-monitor
+    spec:
+      # Only nodes explicitly opted in (see README: kubectl label node ...).
+      nodeSelector:
+        jbod-monitor: "enabled"
+      imagePullSecrets:
+        - name: docker-registry-cred   # synced by registry-cred-vaultstaticsecret.yaml
+      containers:
+        - name: redis
+          image: redis:7-alpine
+          args: ["redis-server", "--save", "60", "1", "--loglevel", "warning"]
+          volumeMounts:
+            - name: redis-data
+              mountPath: /data
+          resources:
+            requests: {cpu: 25m, memory: 32Mi}
+            limits: {memory: 128Mi}
+
+        - name: host-poller
+          image: docker.adamksmith.xyz/jbod-host-poller:514502e
+          securityContext:
+            privileged: true   # raw /dev access for ipmitool + smartctl
+          env:
+            - {name: TZ, value: "America/Denver"}
+            - {name: REDIS_HOST, value: "127.0.0.1"}
+            - {name: REDIS_PORT, value: "6379"}
+            - {name: HOST_ENV_INTERVAL, value: "60"}
+            - {name: HOST_DRIVE_INTERVAL, value: "300"}
+            - {name: POLL_CONCURRENCY, value: "1"}
+            - {name: POLL_DRIVE_GAP, value: "0.5"}
+            - {name: POLL_STARTUP_JITTER, value: "10"}
+            - {name: POLL_DATA_TTL, value: "900"}
+          volumeMounts:
+            - {name: dev, mountPath: /dev}
+            - {name: sys, mountPath: /sys, readOnly: true}
+            - {name: udev, mountPath: /run/udev, readOnly: true}
+          resources:
+            requests: {cpu: 25m, memory: 64Mi}
+            limits: {memory: 256Mi}
+
+        - name: web
+          image: docker.adamksmith.xyz/jbod-web:1839e9d
+          env:
+            - {name: TZ, value: "America/Denver"}
+            - {name: REDIS_HOST, value: "127.0.0.1"}
+            - {name: REDIS_PORT, value: "6379"}
+            - {name: MQTT_HOST, value: "10.5.30.3"}
+            - {name: MQTT_PORT, value: "1883"}
+            - {name: MQTT_DISCOVERY_PREFIX, value: "homeassistant"}
+            - {name: MQTT_BASE_TOPIC, value: "jbod-monitor"}
+            - {name: MQTT_PUBLISH_INTERVAL, value: "60"}
+            - name: MQTT_NODE_ID
+              valueFrom:
+                fieldRef:
+                  fieldPath: spec.nodeName
+          envFrom:
+            - secretRef:
+                name: jbod-mqtt   # MQTT_USERNAME / MQTT_PASSWORD (see VaultStaticSecret)
+          resources:
+            requests: {cpu: 25m, memory: 64Mi}
+            limits: {memory: 256Mi}
+
+      volumes:
+        - name: redis-data
+          emptyDir: {}
+        - name: dev
+          hostPath: {path: /dev}
+        - name: sys
+          hostPath: {path: /sys}
+        - name: udev
+          hostPath: {path: /run/udev}

k8s/mqtt-vaultstaticsecret.yaml

@@ -0,0 +1,35 @@
+# MQTT broker creds for the web container, synced from OpenBao by VSO.
+#
+# Reads secret/home_assistant (keys mqtt_user / mqtt_pass) and renders a k8s
+# Secret `jbod-mqtt` with MQTT_USERNAME / MQTT_PASSWORD keys (consumed via
+# envFrom in the DaemonSet). VSO's `vso-read` policy can read secret/data/*,
+# so unlike the claude-read token it CAN read home_assistant — no creds ever
+# touch these manifests.
+#
+# Verify the transformation syntax against the installed VSO version.
+apiVersion: secrets.hashicorp.com/v1beta1
+kind: VaultStaticSecret
+metadata:
+  name: jbod-mqtt
+  namespace: jbod-monitor
+spec:
+  vaultAuthRef: vault-secrets-operator-system/openbao-kubernetes
+  mount: secret
+  type: kv-v2
+  path: home_assistant
+  refreshAfter: 1h
+  destination:
+    name: jbod-mqtt
+    create: true
+    transformation:
+      excludeRaw: true
+      # Drop ALL passthrough source keys (api_key, vantage_*, etc.) — keep only
+      # the templated MQTT_USERNAME/MQTT_PASSWORD below. Without this, envFrom
+      # would inject the entire home_assistant secret into the web container.
+      excludes:
+        - ".*"
+      templates:
+        MQTT_USERNAME:
+          text: '{{ .Secrets.mqtt_user }}'
+        MQTT_PASSWORD:
+          text: '{{ .Secrets.mqtt_pass }}'

k8s/registry-cred-vaultstaticsecret.yaml

@@ -0,0 +1,18 @@
+# Image pull secret for docker.adamksmith.xyz, synced by VSO from OpenBao.
+# Mirrors the cluster's existing *-registry-cred pattern (secret/registry/nexus
+# -> dockerconfigjson). Referenced as imagePullSecrets in the DaemonSet.
+apiVersion: secrets.hashicorp.com/v1beta1
+kind: VaultStaticSecret
+metadata:
+  name: docker-registry-cred
+  namespace: jbod-monitor
+spec:
+  vaultAuthRef: vault-secrets-operator-system/openbao-kubernetes
+  mount: secret
+  path: registry/nexus
+  type: kv-v2
+  refreshAfter: 1h
+  destination:
+    name: docker-registry-cred
+    create: true
+    type: kubernetes.io/dockerconfigjson

poller.py

@@ -23,7 +23,6 @@ import time
 from services import store
 from services.cache import close_cache, init_cache, redis_available
 from services.enclosure import discover_enclosures, get_enclosure_status, list_slots
-from services.host import get_host_drives
 from services.leds import run_led
 from services.smart import _run_smartctl, sg_ses_available, smartctl_available
 from services.zfs import get_zfs_pool_map
@@ -86,12 +85,7 @@ async def sweep() -> None:
         except Exception as e:
             errors.append(f"ses:{enc['id']}:{e}")
 
-    # 5. Host (non-enclosure) drives + MegaRAID (gated, reuses pool_map).
-    try:
-        host_drives = await get_host_drives(pool_map)
-        await store.set_host_drives(host_drives)
-    except Exception as e:
-        errors.append(f"host:{e}")
+    # NOTE: host/on-metal drives are owned by the separate host-poller now.
 
     # 6. Inventory + heartbeat.
     await store.set_inventory({"enclosures": inv_enclosures, "ts": store.now()})

services/host_sensors.py

@@ -0,0 +1,147 @@
+"""Host/chassis temperature collectors: IPMI (iDRAC) + CPU coretemp.
+
+Used by the host-poller (separate process from the SAS poller). In-band IPMI
+via ipmitool (/dev/ipmi0) gives environmental sensors (Inlet/Exhaust/…); the
+kernel coretemp hwmon gives CPU package temps. IPMI is gated for serialization;
+coretemp is a cheap sysfs read.
+"""
+import asyncio
+import logging
+import os
+import re
+from collections import Counter
+from pathlib import Path
+
+from services.hwgate import gate
+
+logger = logging.getLogger(__name__)
+
+HWMON = Path("/sys/class/hwmon")
+
+
+async def read_ipmi_temps() -> list[dict]:
+    """`ipmitool sdr type temperature` → [{name, temperature_c, status, kind}]."""
+    try:
+        async with gate():
+            proc = await asyncio.create_subprocess_exec(
+                "ipmitool", "sdr", "type", "temperature",
+                stdout=asyncio.subprocess.PIPE,
+                stderr=asyncio.subprocess.PIPE,
+            )
+            out, err = await proc.communicate()
+    except FileNotFoundError:
+        logger.warning("ipmitool not found")
+        return []
+    if proc.returncode != 0:
+        logger.warning("ipmitool failed: %s", err.decode(errors="replace").strip())
+        return []
+    return _parse_ipmi(out.decode(errors="replace"))
+
+
+def _parse_ipmi(text: str) -> list[dict]:
+    # e.g.  "Inlet Temp       | 04h | ok  |  7.1 | 23 degrees C"
+    #       "Temp             | 0Eh | ok  |  3.1 | 40 degrees C"  (CPU1)
+    sensors: list[dict] = []
+    for line in text.splitlines():
+        parts = [p.strip() for p in line.split("|")]
+        if len(parts) < 5:
+            continue
+        name, _sid, status, entity, reading = parts[:5]
+        # Skip relative/derived sensors (e.g. "P1 Therm Margin") — they read in
+        # "degrees C" but are a distance-to-throttle, not an absolute temp.
+        if "margin" in name.lower():
+            continue
+        m = re.search(r"(-?\d+(?:\.\d+)?)\s*degrees?\s*C", reading, re.IGNORECASE)
+        if not m:  # "no reading", "disabled", "ns", etc.
+            continue
+        temp = float(m.group(1))
+        kind = "env"
+        # Dell reports CPU temps as "Temp" under entity 3.x — relabel them.
+        if name.lower() == "temp" and entity.startswith("3."):
+            name = f"CPU {entity.split('.')[-1]}"
+            kind = "cpu"
+        sensors.append({
+            "name": name,
+            "temperature_c": temp,
+            "status": status or "ok",
+            "kind": kind,
+        })
+    return sensors
+
+
+def read_hwmon_env() -> list[dict]:
+    """Read labelled temps from extra hwmon chips as env sensors.
+
+    For boxes without IPMI (e.g. Dell workstations), the BIOS SMM interface
+    (`dell_smm`) exposes CPU/ambient/SODIMM/board temps. Chips are configurable
+    via HOST_HWMON_CHIPS (comma list; default "dell_smm"); set to "" to disable.
+    Names are "<chip> <label>", with the temp index appended when a label
+    repeats within a chip (e.g. dell_smm's multiple "Other" sensors).
+    """
+    chips = [c.strip() for c in os.environ.get("HOST_HWMON_CHIPS", "dell_smm").split(",") if c.strip()]
+    if not chips or not HWMON.is_dir():
+        return []
+    out: list[dict] = []
+    for hw in sorted(HWMON.iterdir()):
+        try:
+            chip = (hw / "name").read_text().strip()
+        except OSError:
+            continue
+        if chip not in chips:
+            continue
+        entries: list[tuple[str, str, int]] = []  # (idx, label, temp)
+        for label_f in sorted(hw.glob("temp*_label")):
+            try:
+                label = label_f.read_text().strip()
+            except OSError:
+                continue
+            input_f = label_f.with_name(label_f.name.replace("_label", "_input"))
+            try:
+                temp = round(int(input_f.read_text().strip()) / 1000)
+            except (OSError, ValueError):
+                continue
+            idx = label_f.name[len("temp"):-len("_label")]
+            entries.append((idx, label, temp))
+        dup = {lbl for lbl, n in Counter(l for _, l, _ in entries).items() if n > 1}
+        for idx, label, temp in entries:
+            name = f"{chip} {label}" + (f" {idx}" if label in dup else "")
+            out.append({"name": name, "temperature_c": temp, "status": "ok", "kind": "env"})
+    return out
+
+
+def read_coretemp() -> list[dict]:
+    """CPU package temps from coretemp hwmon → [{name, temperature_c, kind}]."""
+    cpus: list[dict] = []
+    if not HWMON.is_dir():
+        return cpus
+    for hw in sorted(HWMON.iterdir()):
+        try:
+            if (hw / "name").read_text().strip() != "coretemp":
+                continue
+        except OSError:
+            continue
+        packages: list[dict] = []
+        cores: list[int] = []
+        for label_f in sorted(hw.glob("temp*_label")):
+            try:
+                label = label_f.read_text().strip()
+            except OSError:
+                continue
+            input_f = label_f.with_name(label_f.name.replace("_label", "_input"))
+            try:
+                temp = round(int(input_f.read_text().strip()) / 1000)
+            except (OSError, ValueError):
+                continue
+            low = label.lower()
+            if low.startswith("package id"):
+                pkg = label.split("id")[-1].strip()
+                packages.append({"name": f"CPU {pkg}", "temperature_c": temp, "kind": "cpu"})
+            elif low.startswith("core"):
+                cores.append(temp)
+        # Prefer the per-package sensor; older CPUs (no package sensor) fall back
+        # to the hottest core as the CPU temp.
+        if packages:
+            cpus.extend(packages)
+        elif cores:
+            cpus.append({"name": "CPU", "temperature_c": max(cores), "kind": "cpu"})
+    return cpus

services/mqtt_publisher.py

@@ -19,6 +19,7 @@ import logging
 import os
 import re
 
+from services import store
 from services.secrets import read_kv2
 from services.temps import build_temp_snapshot, get_node_id
 
@@ -80,7 +81,10 @@ class MqttPublisher:
         self.discovery_prefix = os.environ.get("MQTT_DISCOVERY_PREFIX", "homeassistant")
         self.base_topic = os.environ.get("MQTT_BASE_TOPIC", "jbod-monitor")
         self.interval = int(os.environ.get("MQTT_PUBLISH_INTERVAL", "60"))
-        self.node = _slug(get_node_id())
+        self.node_raw = get_node_id()
+        self.node = _slug(self.node_raw)
+        # Parent "hub" device that the per-enclosure devices nest under.
+        self.hub_id = f"{self.node}_jbod_monitor"
 
         self.availability_topic = f"{self.base_topic}/{self.node}/status"
         # unique_ids for which we've already published discovery this connection.
@@ -127,6 +131,16 @@ class MqttPublisher:
         logger.warning("MQTT disconnected: %s", reason_code)
 
     # discovery / state ------------------------------------------------------
+    def _hub_device_block(self) -> dict:
+        """The parent device the enclosures nest under (named, so HA doesn't
+        show an 'Unnamed Device')."""
+        return {
+            "identifiers": [self.hub_id],
+            "name": f"JBOD Monitor ({self.node_raw})",
+            "manufacturer": "jbod-monitor",
+            "model": "SES/SMART poller",
+        }
+
     def _device_block(self, enc: dict) -> dict:
         enc_id = enc["id"]
         vendor = enc.get("vendor", "").strip()
@@ -137,9 +151,29 @@ class MqttPublisher:
             "name": f"JBOD {name} ({enc_id})",
             "manufacturer": vendor or None,
             "model": model or None,
-            "via_device": f"{self.node}_jbod_monitor",
+            "via_device": self.hub_id,
         }
 
+    def _publish_hub(self) -> None:
+        """Announce the hub device via a connectivity binary_sensor, so the
+        parent device is named and shows monitor online/offline status."""
+        uid = f"{self.hub_id}_status"
+        if uid in self._discovered:
+            return
+        payload = {
+            "name": "Status",
+            "unique_id": uid,
+            "device_class": "connectivity",
+            "state_topic": self.availability_topic,
+            "payload_on": "online",
+            "payload_off": "offline",
+            "entity_category": "diagnostic",
+            "device": self._hub_device_block(),
+        }
+        topic = f"{self.discovery_prefix}/binary_sensor/{self.hub_id}/status/config"
+        self._client.publish(topic, json.dumps(payload), qos=1, retain=True)
+        self._discovered.add(uid)
+
     def _publish_discovery(self, enc: dict) -> None:
         enc_id = enc["id"]
         enc_slug = _slug(enc_id)
@@ -204,10 +238,66 @@ class MqttPublisher:
         self._client.publish(state_topic, json.dumps(payload), qos=0, retain=True)
 
     def publish_snapshot(self, snapshot: dict) -> None:
+        self._publish_hub()  # name the parent device before nesting enclosures
         for enc in snapshot.get("enclosures", []):
             self._publish_discovery(enc)
             self._publish_state(enc)
 
+    def publish_host(self, sensors: dict, drives: list) -> None:
+        """Publish chassis temps (IPMI env, CPU, on-metal drives) on the hub."""
+        self._publish_hub()
+        state_topic = f"{self.base_topic}/{self.node}/host/state"
+        device = self._hub_device_block()
+        payload: dict = {}
+
+        def announce(object_id: str, cfg: dict) -> None:
+            uid = cfg["unique_id"]
+            if uid not in self._discovered:
+                topic = f"{self.discovery_prefix}/sensor/{self.hub_id}/{object_id}/config"
+                self._client.publish(topic, json.dumps(cfg), qos=1, retain=True)
+                self._discovered.add(uid)
+
+        common = {
+            "device_class": "temperature",
+            "unit_of_measurement": "°C",
+            "state_class": "measurement",
+            "state_topic": state_topic,
+            "availability_topic": self.availability_topic,
+            "device": device,
+        }
+
+        def add(kind: str, name: str, temp, icon: str | None = None) -> None:
+            if temp is None or not name:
+                return
+            key = f"{kind}_{_slug(name)}"
+            payload[key] = temp
+            cfg = {
+                **common,
+                "name": name,
+                "unique_id": f"{self.hub_id}_{key}",
+                "value_template": f"{{{{ value_json.{key} }}}}",
+            }
+            if icon:
+                cfg["icon"] = icon
+            announce(key, cfg)
+
+        for s in sensors.get("env", []):
+            add("env", s.get("name"), s.get("temperature_c"))
+        for c in sensors.get("cpu", []):
+            add("cpu", c.get("name"), c.get("temperature_c"), icon="mdi:cpu-64-bit")
+
+        def add_drive(d: dict) -> None:
+            dev = d.get("device")
+            if dev:
+                add("drive", f"Drive {dev}", d.get("temperature_c"), icon="mdi:harddisk")
+
+        for d in drives:
+            add_drive(d)
+            for pd in d.get("physical_drives", []):
+                add_drive(pd)
+
+        self._client.publish(state_topic, json.dumps(payload), qos=0, retain=True)
+
     async def run(self) -> None:
         """Background loop: build a snapshot and publish on an interval."""
         await asyncio.sleep(3)  # let the first SMART poll populate the cache
@@ -215,9 +305,14 @@ class MqttPublisher:
             try:
                 snapshot = await build_temp_snapshot()
                 self.publish_snapshot(snapshot)
+                host_sensors = await store.get_host_sensors() or {}
+                host_drives = await store.get_host_drives() or []
+                self.publish_host(host_sensors, host_drives)
                 logger.info(
-                    "MQTT published temps for %d enclosure(s)",
+                    "MQTT published temps for %d enclosure(s) + host (%d env, %d cpu)",
                     len(snapshot.get("enclosures", [])),
+                    len(host_sensors.get("env", [])),
+                    len(host_sensors.get("cpu", [])),
                 )
             except asyncio.CancelledError:
                 raise

services/store.py

@@ -23,9 +23,13 @@ K_SES = "jbod:ses:{}"
 K_ZFS = "jbod:zfs_map"
 K_INVENTORY = "jbod:inventory"
 K_HOST_DRIVES = "jbod:host_drives"
+K_HOST_SENSORS = "jbod:host_sensors"
 K_META = "jbod:poll:meta"
+K_HOST_ENV_META = "jbod:host_poll:env_meta"
+K_HOST_DRIVE_META = "jbod:host_poll:drive_meta"
 K_LED_QUEUE = "jbod:led:queue"
 K_LOCK = "jbod:poll:lock"
+K_HOST_LOCK = "jbod:host_poll:lock"
 
 
 # ── writes (poller) ─────────────────────────────────────────────────────
@@ -49,9 +53,13 @@ async def set_host_drives(host_drives: list) -> None:
     await cache_set(K_HOST_DRIVES, host_drives, DATA_TTL)
 
 
-async def set_meta(meta: dict) -> None:
+async def set_host_sensors(sensors: dict) -> None:
+    await cache_set(K_HOST_SENSORS, sensors, DATA_TTL)
+
+
+async def set_meta(meta: dict, key: str = K_META) -> None:
     # Meta has no TTL — it's the heartbeat; staleness is judged from its ts.
-    await cache_set(K_META, meta, 0)
+    await cache_set(key, meta, 0)
 
 
 # ── reads (consumers) ───────────────────────────────────────────────────
@@ -75,8 +83,12 @@ async def get_host_drives() -> list:
     return await cache_get(K_HOST_DRIVES) or []
 
 
-async def get_meta() -> dict | None:
-    return await cache_get(K_META)
+async def get_host_sensors() -> dict | None:
+    return await cache_get(K_HOST_SENSORS)
+
+
+async def get_meta(key: str = K_META) -> dict | None:
+    return await cache_get(key)
 
 
 # ── locate-LED command queue ────────────────────────────────────────────
@@ -126,20 +138,20 @@ _REFRESH_LUA = (
 )
 
 
-async def acquire_lock(token: str, ttl: int = 30) -> bool:
-    """Atomically claim the poller lock (or re-own it). True if held."""
+async def acquire_lock(token: str, ttl: int = 30, key: str = K_LOCK) -> bool:
+    """Atomically claim a single-instance lock (or re-own it). True if held."""
     client = get_client()
     if client is None:
         return True  # no Redis → no coordination possible; run anyway
-    return bool(await client.eval(_ACQUIRE_LUA, 1, K_LOCK, token, ttl))
+    return bool(await client.eval(_ACQUIRE_LUA, 1, key, token, ttl))
 
 
-async def refresh_lock(token: str, ttl: int = 30) -> bool:
+async def refresh_lock(token: str, ttl: int = 30, key: str = K_LOCK) -> bool:
     """Atomically extend the lock iff we still own it."""
     client = get_client()
     if client is None:
         return True
-    return bool(await client.eval(_REFRESH_LUA, 1, K_LOCK, token, ttl))
+    return bool(await client.eval(_REFRESH_LUA, 1, key, token, ttl))
 
 
 def now() -> float: