ksmithandClaude Sonnet 5 7f579bb508 Phase 8: Production deployment (Debian 13, Nginx Proxy Manager)
Deployment artifacts for the two-server architecture from ARCHITECTURE.md
§9, grounded in verified Debian 13 (trixie) package facts (Python 3.13,
PostgreSQL 17, Node.js 20, redis-server 8.0, certbot 4.0, ufw --
confirmed rather than guessed) rather than a generic "modern Linux" guide:
deploy/systemd/chatapp.service, deploy/chatapp.env.example,
deploy/backup-postgres.sh, deploy/upgrade.sh, and DEPLOYMENT.md as the
actual numbered runbook.

Revised mid-implementation once the user clarified the app sits behind an
existing, separate Nginx Proxy Manager rather than local Nginx+certbot:
dropped the local Nginx config entirely, gunicorn now binds a TCP port
instead of a Unix socket, and app/main.py gained a static-file mount + SPA
fallback route so gunicorn alone serves the built frontend, /api, and /ws
on one port -- what lets NPM's simple one-upstream-per-domain mode work
with zero custom path routing. Path-traversal-guarded (full_path comes
straight from the URL) and cache-header-differentiated (far-future
immutable on Vite's content-hashed assets, no-cache on index.html/sw.js/
manifest so a deploy actually propagates instead of leaving clients on a
stale service worker) -- verified locally against a real gunicorn process
serving a real frontend build, not just eyeballed.

Two real gaps found and fixed alongside the docs, not just noted: gunicorn
wasn't a dependency anywhere despite being the whole app-server design, and
there was no WebSocket reconnect logic on the client -- a reverse proxy's
idle-connection timeout (NPM's or otherwise) would have silently killed a
quiet chat connection with nothing to recover it. Added exponential-backoff
reconnect to useChatSocket.ts, verified by hand (killed and restarted the
local dev backend mid-session, confirmed auto-reconnect and that a message
sends successfully afterward with no page reload).

Every command in DEPLOYMENT.md that could be verified locally, was: the
exact systemd ExecStart line run against local dev Postgres/Redis with
clean SIGTERM shutdown, the static-file serving behavior against a real
build, both shell scripts syntax-checked. What couldn't be verified from
this sandbox (actual Debian 13 hardware, Nginx Proxy Manager itself) is
flagged explicitly in the plan rather than claimed.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-14 11:30:55 -06:00

KeepItTalking

A web-based team chat service (Mattermost-style, no threaded conversations), invite-only. See ARCHITECTURE.md for the full system design and phased build plan.

Phase 1: auth, open-room CRUD, and single-instance WebSocket chat, backend

  • a minimal frontend. Phase 2: private rooms, room roles (owner/admin/ member), and room invites — backend only, see below. Later phases (push notifications, Redis fan-out, the admin portal, the bot/extension system, and production deployment) are tracked as issues in the repo's issue tracker, prioritized.

Structure

  • backend/ — FastAPI + SQLAlchemy 2.0 (async) + PostgreSQL. See backend/README.md for local setup, migrations, how to create a user (site registration is invite-only — no public sign-up endpoint), and the Phase 2 room-roles/invites API.
  • frontend/ — React + Vite PWA (login, room list, chat view). Still Phase-1-only: it doesn't yet call any of the Phase 2 endpoints. A UI redesign is happening separately; frontend work resumes once that lands.

Quickstart

# 1. Postgres (see backend/README.md for details)
docker run -d --name chatapp-postgres \
  -e POSTGRES_USER=chatapp -e POSTGRES_PASSWORD=chatapp -e POSTGRES_DB=chatapp \
  -p 5432:5432 postgres:16-alpine

# 2. Backend
cd backend
python3 -m venv .venv
.venv/bin/pip install -e ".[dev]"
cp .env.example .env   # then set SESSION_SECRET
.venv/bin/alembic upgrade head
.venv/bin/python -m app.cli create-user alice alice@example.com "some-password"
.venv/bin/uvicorn app.main:app --reload &

# 3. Frontend (in another shell)
cd frontend
npm install
npm run dev

Then open http://localhost:5173 and log in with the account created above. The Vite dev server proxies /api and /ws to the backend on :8000, so no CORS configuration is needed in development.

Deployment

See DEPLOYMENT.md for the full production runbook — two Debian 13 servers, no containers, matching ARCHITECTURE.md §9.

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