3363f59b4b
Files changed: credentials engine/lint-report.md vault/.obsidian/workspace.json vault/docs/software/central.md
104 lines
5.3 KiB
Markdown
104 lines
5.3 KiB
Markdown
---
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title: central — Data-Hub Spine
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type: reference
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tags: [recon]
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related: ["[[navi]]", "[[services]]", "[[environment]]"]
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updated: 2026-06-27
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---
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# central — Data-Hub Spine
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## Overview
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central is a multi-domain real-time data-hub spine. Adapters normalize upstream sources, publish CloudEvents to **NATS/JetStream**, and archive to **TimescaleDB/PostGIS** for historical and geospatial query. It is the live data backbone for navi traffic tiles and related situational-awareness feeds.
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- **URL (internal):** http://central.echo6.mesh:8000 (mesh-only, no public exposure)
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- **Host:** utility CT 104 (unprivileged Ubuntu LXC)
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- **Repo:** github.com/zvx-echo6/central (public, Python, deployed at detached HEAD, tag v0.14.5)
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- **Deploy path:** /opt/central (venv: /opt/central/.venv, env: /etc/central/central.env, system user: central)
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## Host
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| Attribute | Value |
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|-----------|-------|
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| Container | utility CT 104 |
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| Local IP | 192.168.1.104 |
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| Tailscale / mesh | 100.64.0.12 → central.echo6.mesh |
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| Resources | 4 cores / 12 GB RAM / 100 GB disk |
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| OS | Ubuntu LXC (unprivileged) |
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## Architecture
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The data flow is: upstream APIs → adapters (central-supervisor) → NATS/JetStream :4222 → central-archive (TimescaleDB/PostGIS :5432). The central-gui (FastAPI + HTMX, :8000) exposes the API consumed by navi via recon-vm's nginx (port 8440, `^~ /api/traffic/` → `central.echo6.mesh:8000`).
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## Systemd Services
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All three units are **enabled and active**; deployment survives reboot. Deps: `nats-server`, `postgresql@16-main`.
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| Unit | Role |
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|------|------|
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| central-supervisor | Adapter scheduler + CloudEvents publisher |
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| central-archive | JetStream → TimescaleDB consumer |
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| central-gui | FastAPI + HTMX web app + API (the :8000 listener) |
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## Ports
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| Port | Protocol | Purpose |
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|------|----------|---------|
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| :8000 | HTTP | GUI / API (bound 0.0.0.0) |
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| :4222 | TCP | NATS client connections |
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| :8222 | HTTP | NATS monitoring |
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| :5432 | TCP | PostgreSQL 16 + TimescaleDB/PostGIS |
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## Adapters (23 configured, 22 enabled)
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| Domain | Sources |
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|--------|---------|
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| Traffic | ITD 511, WZDX, TomTom flow/incidents, 511 cameras |
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| Wildfire | WFIGS incidents/perimeters, InciWeb, FIRMS |
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| Weather / Space-weather | NWS, SWPC k-index/protons/alerts |
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| Hydro | NWIS |
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| Earthquakes | USGS |
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| Avalanche | avalanche.org |
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| Disasters | GDACS, EONET |
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| Satellite | CelesTrak TLE, sat positions/orbits, satpass_predict (n2yo_visualpasses disabled 2026-06-27) |
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## GUI / API Surface
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Authenticated app with login/sessions/CSRF, first-run setup wizard, operator management, adapter configuration, stream viewer, **JetStream consumer management** (`/consumers` — view + delete consumers; central's own `archive-*` durable consumers are protected/non-deletable; CSRF + audit-logged), enrichment pipeline, monitoring-area management, API key management, audit log, and manual resend.
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**Auth-exempt tile endpoints** (used by navi, verified HTTP 200):
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| Endpoint | Format |
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|----------|--------|
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| /api/traffic/flow/{z}/{x}/{y}.png | PNG tile (raster, image/png) |
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| /api/traffic/flow/{z}/{x}/{y}.pbf | PBF tile (vector, application/x-protobuf) |
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`/health` is also auth-exempt (returns `{"status":"ok"}`). All other `/api/` endpoints redirect to `/login`.
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## Consumer — navi Integration
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navi-traffic (navi's in-VM :8421 extraction service) was **retired on 2026-05-26** and cut over to central. recon-vm's nginx (`/etc/nginx/sites-available/navi.echo6.co`, port 8440) now proxies `^~ /api/traffic/` → `central.echo6.mesh:8000` with a 120s tile cache. navi-traffic:8421 is confirmed dead and disabled. Tile endpoints verified returning HTTP 200.
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## Dependencies
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| Component | Location |
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|-----------|----------|
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| NATS / JetStream | Local (central CT 104) |
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| PostgreSQL 16 + TimescaleDB + PostGIS | Local (central CT 104) |
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| Upstream APIs | ~20 external sources (see Adapters table) |
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## Data Plane
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Single TimescaleDB hypertable `public.events` (~22 GB, ~3.19 M rows, 331 chunks, compression not enabled). JetStream ~5.86 GB / 20 GB across 12 streams.
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## Deploy / State Notes (as of 2026-06-29)
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- **Deployed HEAD:** v0.14.7 (detached HEAD — the box tracks tags). All prior drift resolved: migration 036 committed, `pyproject.toml` version current, README operational.
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- **Deploy mechanism:** manual, tag-based (`git checkout <tag>` → `uv sync` → `central-migrate` → restart). One-command `scripts/deploy.sh` ships in-repo; full procedure in the [[central-deploy-cutover]] runbook. No CI/CD; no automated DB backup (pre-flight `pg_dump` is the only migration safety net; migrations are forward-only).
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- **`central-migrate` env gotcha:** manual calls need `cd /opt/central && set -a && . /etc/central/central.env && set +a && …` (the units supply this via WorkingDirectory + EnvironmentFile).
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- **EONET:** now **global** as of v0.14.6 (2026-06-28) — `bypass_bbox_filter=True` + the adapter `region` key removed. NOTE: its `events`-table row count is a misleading health signal (dedup + partition expiry); use the CENTRAL_DISASTER stream as the EONET flow signal. `avalanche_org` zero-events is expected (off-season gate).
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- **Supervisor CPU** ~17%→~1.4% and **cursors.db** 1.3 GB→496 MB after the v0.14.6 dedup/WAL fix + a VACUUM.
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---
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*Last updated: 2026-06-29 — v0.14.7 deployed (consumers admin page); drift cleared, EONET global, perf fixes verified.*
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