Decouple the privileged hardware poller from web iterations so a web
redeploy can never recreate/restart the poller (the backplane-touching
container). Two images from one Dockerfile via build targets:
- jbod-poller: privileged producer, ships smartmontools/sg3-utils/ledmon,
Redis-only deps (~197MB)
- jbod-web: unprivileged read-only consumer (REST/UI/MQTT), no hardware
tools, no /dev (~147MB)
Two compose projects sharing Redis over host networking:
- compose.infra.yml (jbod-infra): poller + redis — stable substrate
- compose.web.yml (jbod-web): app — 'up -d --build' touches only app
build.sh builds/pushes both images; split requirements-{poller,web}.txt;
dropped the combined docker-compose.yml; .dockerignore excludes tmp/ (keeps
the venv and the mqtt.env creds out of the build context).
Rearchitect so a single poller process is the sole owner of all SAS/SMART/
SES hardware I/O, serialized behind one gate and paced, writing results to
Redis. The API/web and MQTT publisher become pure Redis readers — they no
longer issue any subprocess and can restart freely without touching the bus.
This addresses backplane/expander stress from concurrent + restart-triggered
SMART/SES storms (the prior model re-ran a hardware sweep on every container
start, and polled sg_ses 0x02+0x07 every 60s; 0x07 errored on the IOM6/
Xyratex expanders).
- poller.py: paced sweep (inventory, SMART per-drive w/ gap, SES 0x02, ZFS,
host/MegaRAID), startup jitter, single-instance Redis lock, LED-queue worker
- services/hwgate.py: global serialization semaphore (POLL_CONCURRENCY=1)
- services/store.py: Redis as the only producer<->consumer interface + LED queue
- services/health.py: shared drive-health classifier (fixes overview double-count)
- gate smartctl/sg_ses/zpool/ledctl; drop sg_ses 0x07 from the hot path
- routers + temps read-only from the store; main.py drops the in-process poller
- compose: 3 services (privileged poller + unprivileged app + redis) w/ pacing knobs
- Vite + React frontend with dark-themed dashboard, slot grid per
enclosure, and SMART detail overlay
- ZFS pool membership via zpool status -P
- Multi-stage Dockerfile (Node build + Python runtime)
- Updated docker-compose with network_mode host and healthcheck
