adam
4c68bff964
Design artifact (NOT applied). Per-node pod = host-poller + redis + web sharing pod localhost; only host-poller privileged with hostPath /dev+/sys. No SAS poller (no enclosures). MQTT_NODE_ID from spec.nodeName; MQTT creds via VSO VaultStaticSecret reading secret/home_assistant (mqtt_user/pass -> MQTT_USERNAME/ PASSWORD). nodeSelector jbod-monitor=enabled to pin to pascal/currie/fermi.
63 lines
2.5 KiB
Markdown
63 lines
2.5 KiB
Markdown
# jbod-monitor on RKE2 (DaemonSet)
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Per-node self-contained deployment for Kubernetes worker nodes that can't run
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the docker-compose stack. Each opted-in node runs one pod (`host-poller` +
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`redis` + `web`) and publishes its own Home Assistant device
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(`JBOD Monitor (<node>)`) over MQTT.
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This mirrors the docker-compose stack with **no code changes** — each node is
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independent, exactly like the standalone hosts.
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## What it collects
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- **host-poller** (privileged, hostPath `/dev`+`/sys`): IPMI/iDRAC env, CPU
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coretemp, on-metal drive SMART → node-local redis.
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- **web**: reads redis, publishes per-node MQTT discovery to the broker.
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- No SAS poller (no SES enclosures on these nodes). Consequence: host-drive
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entities have no ZFS pool label (no zfs_map producer).
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## Prereqs to verify before applying
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1. **Registry pull**: confirm the cluster can pull `docker.adamksmith.xyz/*`.
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If it needs auth, sync a `regcred` into the `jbod-monitor` namespace and
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uncomment `imagePullSecrets` in `daemonset.yaml`.
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2. **VSO**: `vault-secrets-operator-system/openbao-kubernetes` VaultAuth exists
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(it does, per infra notes). Confirm the `transformation.templates` syntax
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matches the installed VSO version.
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3. **MQTT egress**: pods must reach `10.5.30.3:1883` (EMQX).
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## Apply order
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```bash
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# 1. Label ONLY the intended nodes (do not blanket-label all workers):
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kubectl label node usco-dc-pascal usco-dc-currie usco-dc-fermi jbod-monitor=enabled
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# 2. Namespace + DaemonSet:
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kubectl apply -f k8s/daemonset.yaml
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# 3. MQTT creds (VSO → Secret jbod-mqtt). Apply, then confirm it synced:
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kubectl apply -f k8s/mqtt-vaultstaticsecret.yaml
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kubectl -n jbod-monitor get vaultstaticsecret jbod-mqtt # SYNCED=True
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kubectl -n jbod-monitor get secret jbod-mqtt # has MQTT_USERNAME/PASSWORD
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# 4. Roll the web container so it picks up the secret (if it started first):
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kubectl -n jbod-monitor rollout restart daemonset/jbod-monitor
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```
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## Verify
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```bash
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kubectl -n jbod-monitor get pods -o wide # one per labeled node
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kubectl -n jbod-monitor logs <pod> -c host-poller | grep sweep
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kubectl -n jbod-monitor logs <pod> -c web | grep -i mqtt # "MQTT connected"
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```
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Then check Home Assistant for `JBOD Monitor (usco-dc-pascal|currie|fermi)`.
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## Notes
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- pascal (R620) already has an iDRAC "System Board Inlet Temp" in HA via another
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integration — its env temp will partially duplicate; drives + CPU are net-new.
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- Pin image tags by SHA (already done: host-poller `514502e`, web `1839e9d`).
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- Removal: `kubectl delete -f k8s/daemonset.yaml` and unlabel the nodes.
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