vault-link/docs/guide/server-setup.md
Andras Schmelczer 70f97c4b16
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# Server Setup
Deploy VaultLink server via Docker, binary, or build from source.
## Deployment Options
### Docker (Recommended)
Easiest deployment path, includes health checks.
#### Basic Docker Deployment
```bash
# Pull the latest image
docker pull ghcr.io/schmelczer/vault-link-server:latest
# Create data directory
mkdir -p ~/vaultlink-data
# Create config.yml (see Configuration section below)
# Run the container
docker run -d \
--name vaultlink-server \
--restart unless-stopped \
-p 3000:3000 \
-v ~/vaultlink-data:/data \
ghcr.io/schmelczer/vault-link-server:latest \
/app/sync_server /data/config.yml
```
#### Docker Compose
Create `docker-compose.yml`:
```yaml
services:
vaultlink-server:
image: ghcr.io/schmelczer/vault-link-server:latest
container_name: vaultlink-server
restart: unless-stopped
ports:
- "3000:3000"
volumes:
- ./data:/data
command: ["/app/sync_server", "/data/config.yml"]
healthcheck:
test: ["CMD", "curl", "-f", "http://localhost:3000/vaults/fake/ping"]
interval: 30s
timeout: 5s
retries: 3
start_period: 10s
```
Start the server:
```bash
docker compose up -d
```
### Binary Installation
Download pre-built binaries from [GitHub Releases](https://github.com/schmelczer/vault-link/releases):
```bash
# Download the binary for your platform
wget https://github.com/schmelczer/vault-link/releases/latest/download/sync_server-linux-x86_64
# Make executable
chmod +x sync_server-linux-x86_64
# Run the server
./sync_server-linux-x86_64 config.yml
```
### Build from Source
Requirements: Rust 1.92.0+, SQLite development headers, SQLx CLI
```bash
# Clone the repository
git clone https://github.com/schmelczer/vault-link.git
cd vault-link/sync-server
# Install SQLx CLI
cargo install sqlx-cli
# Set up the database
sqlx database create --database-url sqlite://db.sqlite3
sqlx migrate run --source src/app_state/database/migrations --database-url sqlite://db.sqlite3
cargo sqlx prepare --workspace
# Build in release mode
cargo build --release
# Run the server
./target/release/sync_server config.yml
```
## Configuration
Create a `config.yml` file with your server configuration:
```yaml
database:
databases_directory_path: databases
max_connections_per_vault: 12
cursor_timeout_seconds: 60
server:
host: 0.0.0.0
port: 3000
max_body_size_mb: 512
max_clients_per_vault: 256
response_timeout_seconds: 60
users:
user_configs:
- name: admin
token: your-secure-random-token-here
vault_access:
type: allow_access_to_all
logging:
log_directory: logs
log_rotation: 7days
```
### Configuration Fields
#### Database
- `databases_directory_path`: Directory for SQLite databases (one per vault)
- `max_connections_per_vault`: Maximum concurrent database connections
- `cursor_timeout_seconds`: How long to keep database cursors alive
#### Server
- `host`: Bind address (use `0.0.0.0` for all interfaces)
- `port`: Port to listen on (default: 3000)
- `max_body_size_mb`: Maximum upload size
- `max_clients_per_vault`: Concurrent client limit per vault
- `response_timeout_seconds`: Request timeout
#### Users
See [Authentication Configuration →](/config/authentication) for detailed user setup.
#### Logging
- `log_directory`: Where to store log files
- `log_rotation`: How often to rotate logs (e.g., `7days`, `24hours`)
## Production Deployment
### SSL/TLS with Reverse Proxy
VaultLink doesn't handle SSL directly. Use a reverse proxy like Nginx or Caddy.
#### Nginx Configuration
```nginx
upstream vaultlink {
server localhost:3000;
}
server {
listen 443 ssl http2;
server_name sync.example.com;
ssl_certificate /path/to/cert.pem;
ssl_certificate_key /path/to/key.pem;
location / {
proxy_pass http://vaultlink;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
# WebSocket specific
proxy_read_timeout 3600s;
proxy_send_timeout 3600s;
}
}
```
Reload Nginx:
```bash
sudo nginx -t
sudo systemctl reload nginx
```
#### Caddy Configuration
Caddy handles SSL automatically:
```caddy
sync.example.com {
reverse_proxy localhost:3000
}
```
Start Caddy:
```bash
caddy run --config Caddyfile
```
### Systemd Service
Create `/etc/systemd/system/vaultlink.service`:
```ini
[Unit]
Description=VaultLink Sync Server
After=network.target
[Service]
Type=simple
User=vaultlink
WorkingDirectory=/opt/vaultlink
ExecStart=/opt/vaultlink/sync_server /opt/vaultlink/config.yml
Restart=always
RestartSec=10
[Install]
WantedBy=multi-user.target
```
Enable and start:
```bash
sudo systemctl daemon-reload
sudo systemctl enable vaultlink
sudo systemctl start vaultlink
sudo systemctl status vaultlink
```
### Security Best Practices
1. **Use strong tokens**: Generate with `openssl rand -hex 32`
2. **Enable firewall**: Only expose port 3000 to reverse proxy
3. **Regular updates**: Keep Docker images and binaries updated
4. **Backup databases**: SQLite files in `databases_directory_path`
5. **Monitor logs**: Check log directory for errors and anomalies
6. **Limit access**: Use vault-specific access controls per user
### Backup Strategy
The SQLite databases contain all vault data and history:
```bash
# Backup script
#!/bin/bash
BACKUP_DIR="/backup/vaultlink/$(date +%Y%m%d)"
DATA_DIR="/data/databases"
mkdir -p "$BACKUP_DIR"
cp -r "$DATA_DIR" "$BACKUP_DIR/"
# Keep 30 days of backups
find /backup/vaultlink -type d -mtime +30 -exec rm -rf {} +
```
Run daily via cron:
```cron
0 2 * * * /opt/vaultlink/backup.sh
```
### Monitoring
#### Health Checks
The server exposes a ping endpoint:
```bash
curl http://localhost:3000/vaults/test/ping
# Returns: {"server_version":"0.10.1","is_authenticated":false}
```
Replace `test` with any vault name. The endpoint returns:
- `server_version`: Current server version
- `is_authenticated`: Whether the request included a valid token
Docker health check is built-in and checks this endpoint every 30 seconds.
#### Prometheus Metrics
For advanced monitoring, collect Docker stats or implement custom metrics.
#### Log Monitoring
Logs are written to the configured `log_directory`. Monitor for:
- Connection failures
- Authentication errors
- Database errors
- WebSocket disconnections
Example log watching:
```bash
tail -f /data/logs/*.log | grep -i error
```
## Scaling
### Horizontal Scaling
VaultLink currently uses SQLite, which limits horizontal scaling. For multiple servers:
1. Run separate instances for different vaults
2. Use load balancer with sticky sessions (same vault → same server)
3. Consider database architecture for your scale needs
### Vertical Scaling
Increase resources for the server:
- More CPU for handling concurrent connections
- More RAM for database caching
- Faster storage (SSD) for database operations
Tune configuration:
- Increase `max_clients_per_vault` for more concurrent users
- Increase `max_connections_per_vault` for database performance
- Adjust `max_body_size_mb` based on typical file sizes
## Troubleshooting
### Server won't start
```bash
# Check Docker logs
docker logs vaultlink-server
# Common issues:
# - Port already in use: Change port mapping
# - Config syntax error: Validate YAML
# - Permission error: Check volume permissions
```
### High memory usage
- Reduce `max_connections_per_vault`
- Reduce `max_clients_per_vault`
- Check for large vaults (may need database optimisation)
### Database corruption
```bash
# Verify database integrity
sqlite3 databases/your-vault.db "PRAGMA integrity_check;"
# If corrupted, restore from backup
cp /backup/databases/your-vault.db /data/databases/
```
### WebSocket connection drops
- Check reverse proxy timeout settings
- Verify firewall isn't closing connections
- Review client retry intervals
- Check server logs for errors
## Next Steps
- [Configure authentication and access control →](/config/authentication)
- [Set up Obsidian plugin →](/guide/obsidian-plugin)
- [Deploy CLI client →](/guide/cli-client)
- [Understand the architecture →](/architecture/)