# IPMI Controller - Persistence Setup

## Data Persistence

All configuration and user data is stored in the `data/` directory:
- `data/config.json` - All settings, fan curves, IPMI config
- `data/users.json` - User accounts and passwords

**IMPORTANT:** The `data/` directory is committed to git for version control of your settings.

## Backup Your Settings

```bash
# Create backup
cd ~/ipmi-controller
cp -r data data.backup.$(date +%Y%m%d)

# Or backup to external location
cp data/config.json /mnt/backup/ipmi-controller-config.json
```

## Auto-Start on Boot (systemd)

1. **Create service file:**
```bash
sudo tee /etc/systemd/system/ipmi-controller.service << 'EOF'
[Unit]
Description=IPMI Controller
After=network.target

[Service]
Type=simple
User=devmatrix
WorkingDirectory=/home/devmatrix/ipmi-controller
ExecStart=/usr/bin/python3 /home/devmatrix/ipmi-controller/web_server.py
Restart=always
RestartSec=10

[Install]
WantedBy=multi-user.target
EOF
```

2. **Enable and start:**
```bash
sudo systemctl daemon-reload
sudo systemctl enable ipmi-controller
sudo systemctl start ipmi-controller
```

3. **Check status:**
```bash
sudo systemctl status ipmi-controller
sudo journalctl -u ipmi-controller -f
```

## Docker Deployment (Persistent)

```bash
# Using docker-compose
cd ~/ipmi-controller
docker-compose up -d

# Data is persisted in ./data directory
```

## Updating Without Losing Settings

```bash
cd ~/ipmi-controller

# Backup first
cp -r data data.backup

# Pull updates
git pull

# Restart
sudo systemctl restart ipmi-controller
# OR if using docker:
docker-compose restart
```

## What Gets Persisted

✅ IPMI connection settings  
✅ HTTP sensor configuration  
✅ Fan curves (Balanced, Silent, Performance, etc.)  
✅ User accounts and passwords  
✅ Theme preference (dark/light)  
✅ Fan groups and custom names  
✅ All control settings (poll interval, panic temps, etc.)  

## Migration to New Server

1. Copy `data/config.json` and `data/users.json` to new server
2. Install ipmitool: `sudo apt-get install ipmitool`
3. Install Python deps: `pip install -r requirements.txt`
4. Start server: `python3 web_server.py`