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aitbc/docs/infrastructure.md
oib 8741724250 docs: rewrite infrastructure.md — current two-tier architecture 
- Document incus host reverse proxy (aitbc-proxy.conf, SSL termination)
- Document container nginx routes (18 location blocks)
- Document all 6 running services with ports and public URLs
- Update web root tree (explorer/, marketplace/, docs/, wallet/)
- Update dev workspace tree (removed stale home/, src/ references)
- Add deployment commands (scp to container)
- Consolidate health checks, monitoring, security sections
- Note purged legacy config (aitbc-website-new.conf deleted from host)
2026-02-14 16:30:28 +01:00

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# AITBC Infrastructure Documentation
> Last updated: 2026-02-14
## Overview
Two-tier architecture: **incus host** (localhost) runs the reverse proxy with SSL termination, forwarding all `aitbc.bubuit.net` traffic to the **aitbc container** which runs nginx + all services.
```
Internet → aitbc.bubuit.net (HTTPS :443)
│
▼
┌──────────────────────────────────────────────┐
│ Incus Host (localhost / at1) │
│ Nginx reverse proxy (:443 SSL → :80) │
│ Config: /etc/nginx/sites-available/ │
│ aitbc-proxy.conf │
│ │
│ ┌────────────────────────────────────────┐ │
│ │ Container: aitbc (10.1.223.93) │ │
│ │ Access: ssh aitbc-cascade │ │
│ │ │ │
│ │ Nginx (:80) → routes to services: │ │
│ │ / → static website │ │
│ │ /explorer/ → Vite SPA │ │
│ │ /marketplace/ → Vite SPA │ │
│ │ /Exchange → :3002 (Python) │ │
│ │ /docs/ → static HTML │ │
│ │ /wallet/ → :8002 (daemon) │ │
│ │ /api/ → :8000 (coordinator)│ │
│ │ /rpc/ → :8081 (blockchain) │ │
│ │ /admin/ → :8000 (coordinator)│ │
│ │ /health → 200 OK │ │
│ │ │ │
│ │ Config: /etc/nginx/sites-enabled/ │ │
│ │ aitbc.bubuit.net │ │
│ └────────────────────────────────────────┘ │
└──────────────────────────────────────────────┘
```
## Incus Host (localhost)
### Nginx Reverse Proxy
The host runs a simple reverse proxy that forwards all traffic to the container. SSL is terminated here via Let's Encrypt.
- **Config**: `/etc/nginx/sites-available/aitbc-proxy.conf`
- **Enabled**: symlinked in `/etc/nginx/sites-enabled/`
- **SSL**: Let's Encrypt cert for `bubuit.net` (managed by Certbot)
- **Upstream**: `http://10.1.223.93` (container IP)
- **WebSocket**: supported (Upgrade/Connection headers forwarded)
```nginx
# /etc/nginx/sites-available/aitbc-proxy.conf (active)
server {
server_name aitbc.bubuit.net;
location / {
proxy_pass http://10.1.223.93;
proxy_set_header Host $host;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
}
listen 443 ssl; # managed by Certbot
ssl_certificate /etc/letsencrypt/live/bubuit.net/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/bubuit.net/privkey.pem;
}
# HTTP → HTTPS redirect (managed by Certbot)
```
**Purged legacy configs** (2026-02-14):
- `aitbc-website-new.conf` — served files directly from host, bypassing container. Deleted.
## Container: aitbc (10.1.223.93)
### Access
```bash
ssh aitbc-cascade # Direct SSH to container
```
### Services
| Service | Port | Process | Public URL |
|---------|------|---------|------------|
| Nginx (web) | 80 | nginx | https://aitbc.bubuit.net/ |
| Coordinator API | 8000 | python (uvicorn) | /api/ → /v1/ |
| Blockchain Node RPC | 8081 | python3 | /rpc/ |
| Wallet Daemon | 8002 | python | /wallet/ |
| Trade Exchange | 3002 | python (server.py) | /Exchange |
| Exchange API | 8085 | python | /api/trades/*, /api/orders/* |
### Nginx Routes (container)
Config: `/etc/nginx/sites-enabled/aitbc.bubuit.net`
| Route | Target | Type |
|-------|--------|------|
| `/` | static files (`/var/www/aitbc.bubuit.net/`) | try_files |
| `/explorer/` | Vite SPA (`/var/www/aitbc.bubuit.net/explorer/`) | try_files |
| `/marketplace/` | Vite SPA (`/var/www/aitbc.bubuit.net/marketplace/`) | try_files |
| `/docs/` | static HTML (`/var/www/aitbc.bubuit.net/docs/`) | alias |
| `/Exchange` | proxy → `127.0.0.1:3002` | proxy_pass |
| `/exchange` | 301 → `/Exchange` | redirect |
| `/api/` | proxy → `127.0.0.1:8000/v1/` | proxy_pass |
| `/api/explorer/` | proxy → `127.0.0.1:8000/v1/explorer/` | proxy_pass |
| `/api/users/` | proxy → `127.0.0.1:8000/v1/users/` | proxy_pass |
| `/api/trades/recent` | proxy → `127.0.0.1:8085` | proxy_pass |
| `/api/orders/orderbook` | proxy → `127.0.0.1:8085` | proxy_pass |
| `/admin/` | proxy → `127.0.0.1:8000/v1/admin/` | proxy_pass |
| `/rpc/` | proxy → `127.0.0.1:8081` | proxy_pass |
| `/wallet/` | proxy → `127.0.0.1:8002` | proxy_pass |
| `/v1/` | proxy → `10.1.223.1:8090` (mock coordinator) | proxy_pass |
| `/health` | 200 OK | direct |
| `/Marketplace` | 301 → `/marketplace/` | redirect (legacy) |
| `/BrowserWallet` | 301 → `/docs/browser-wallet.html` | redirect (legacy) |
### Web Root (`/var/www/aitbc.bubuit.net/`)
```
/var/www/aitbc.bubuit.net/
├── index.html # Main website
├── 404.html # Error page
├── favicon.ico
├── favicon.svg
├── font-awesome-local.css
├── docs/ # HTML documentation (16 pages + css/js)
│ ├── index.html
│ ├── clients.html
│ ├── miners.html
│ ├── developers.html
│ ├── css/docs.css
│ └── js/theme.js
├── explorer/ # Blockchain explorer (Vite build)
│ ├── index.html
│ ├── assets/
│ ├── css/
│ └── js/
├── marketplace/ # GPU marketplace (Vite build)
│ ├── index.html
│ └── assets/
├── wallet/ # Browser wallet redirect
│ └── index.html
└── firefox-wallet/ # Firefox extension download
```
### Data Storage (container)
```
/opt/coordinator-api/ # Coordinator application
├── src/coordinator.db # Main database
└── .venv/ # Python environment
/opt/blockchain-node/ # Blockchain Node 1
├── data/chain.db # Chain database
└── .venv/ # Python environment
/opt/blockchain-node-2/ # Blockchain Node 2
├── data/chain2.db # Chain database
└── .venv/ # Python environment
/opt/exchange/ # Exchange API
├── data/ # Exchange data
└── .venv/ # Python environment
```
### Configuration (container)
- Node 1: `/opt/blockchain-node/src/aitbc_chain/config.py`
- Node 2: `/opt/blockchain-node-2/src/aitbc_chain/config.py`
## Remote Site (ns3)
### Host (ns3-root)
- **IP**: 95.216.198.140
- **Access**: `ssh ns3-root`
- **Bridge**: incusbr0 `192.168.100.1/24`
- **Port forwarding**: firehol (8000, 8081, 8082, 9080 → 192.168.100.10)
### Container (ns3/aitbc)
- **IP**: 192.168.100.10
- **Domain**: aitbc.keisanki.net
- **Access**: `ssh ns3-root` → `incus shell aitbc`
- **Blockchain Node 3**: RPC on port 8082
```bash
curl http://aitbc.keisanki.net/rpc/head # Node 3 RPC
```
## Cross-Site Synchronization
- **Status**: Active on all 3 nodes
- **Method**: RPC-based polling every 10 seconds
- **Features**: Transaction propagation, height detection, block import
- **Endpoints**:
- Local: https://aitbc.bubuit.net/rpc/ (Node 1, port 8081)
- Remote: http://aitbc.keisanki.net/rpc/ (Node 3, port 8082)
- **Consensus**: PoA with 2s block intervals
- **P2P**: Not connected yet; nodes maintain independent chain state
## Development Workspace
```
/home/oib/windsurf/aitbc/ # Local development
├── apps/ # Application source (8 apps)
├── cli/ # CLI tools (12 command groups)
├── scripts/ # Organized scripts (8 subfolders)
│ ├── blockchain/ # Genesis, proposer, mock chain
│ ├── dev/ # Dev tools, local services
│ └── examples/ # Usage examples and simulations
├── tests/ # Pytest suites + verification scripts
├── docs/ # Markdown documentation (10 sections)
└── website/ # Public website source
```
### Deploying to Container
```bash
# Push website files
scp -r website/* aitbc-cascade:/var/www/aitbc.bubuit.net/
# Push app updates
scp -r apps/explorer-web/dist/* aitbc-cascade:/var/www/aitbc.bubuit.net/explorer/
# Restart a service
ssh aitbc-cascade "systemctl restart coordinator-api"
```
## Health Checks
```bash
# From localhost (via container)
ssh aitbc-cascade "curl -s http://localhost:8000/v1/health"
ssh aitbc-cascade "curl -s http://localhost:8081/rpc/head | jq .height"
# From internet
curl -s https://aitbc.bubuit.net/health
curl -s https://aitbc.bubuit.net/api/explorer/blocks
# Remote site
ssh ns3-root "curl -s http://192.168.100.10:8082/rpc/head | jq .height"
```
## Monitoring and Logging
```bash
# Container systemd logs
ssh aitbc-cascade "journalctl -u coordinator-api --no-pager -n 20"
ssh aitbc-cascade "journalctl -u aitbc-blockchain-node-1 --no-pager -n 20"
# Container nginx logs
ssh aitbc-cascade "tail -20 /var/log/nginx/aitbc.bubuit.net.error.log"
# Host nginx logs
sudo tail -20 /var/log/nginx/error.log
```
## Security
### SSL/TLS
- Let's Encrypt certificate for `bubuit.net` (wildcard)
- SSL termination at incus host nginx
- HTTP → HTTPS redirect (Certbot managed)
### CORS
- Coordinator API: localhost origins only (3000, 8080, 8000, 8011)
- Exchange API: localhost origins only
- Blockchain Node: localhost origins only
### Authentication
- Coordinator API: `X-Api-Key` header required
- Exchange API: session-based (wallet address login, 24h expiry)
- JWT secrets from environment variables (fail-fast on startup)
### Encryption
- Wallet private keys: Fernet (AES-128-CBC) with PBKDF2-SHA256 key derivation
- Database credentials: parsed from `DATABASE_URL` env var
### Environment Variables
```bash
# Coordinator API
JWT_SECRET=<secret>
DATABASE_URL=postgresql://user:pass@host/db
# Exchange API
SESSION_SECRET=<secret>
WALLET_ENCRYPTION_KEY=<key>
```
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