# Database Password Fix Guide

## Problem
The backend API is returning HTTP 503 with a "degraded" status because it cannot connect to the PostgreSQL database. The error message indicates:
```
password authentication failed for user "explorer" (SQLSTATE 28P01)
```

## Solution

The database password needs to be reset to match the backend configuration. The backend expects:
- **User**: `explorer`
- **Password**: `changeme`
- **Database**: `explorer`

### Option 1: Automated Fix (Recommended)

Run the fix script with sudo:

```bash
cd /home/intlc/projects/proxmox/explorer-monorepo
sudo ./scripts/fix-database-password-manual.sh
```

This script will:
1. Create or update the `explorer` PostgreSQL user with password `changeme`
2. Create the `explorer` database if it doesn't exist
3. Grant all privileges to the explorer user
4. Test the connection

### Option 2: Manual Fix

If you prefer to fix it manually, run these commands:

```bash
# Connect to PostgreSQL as the postgres superuser
sudo -u postgres psql

# In the PostgreSQL prompt, run:
CREATE USER explorer WITH PASSWORD 'changeme';
CREATE DATABASE explorer OWNER explorer;
GRANT ALL PRIVILEGES ON DATABASE explorer TO explorer;
\q
```

Or if the user already exists:

```bash
sudo -u postgres psql -c "ALTER USER explorer WITH PASSWORD 'changeme';"
sudo -u postgres psql -c "GRANT ALL PRIVILEGES ON DATABASE explorer TO explorer;"
```

### Option 3: Use Different Password

If you want to use a different password, you have two options:

**A. Update the backend to use the existing password:**

```bash
export DB_PASSWORD="your_actual_password"
kill $(cat /tmp/explorer_backend.pid) 2>/dev/null
./scripts/start-backend-service.sh
```

**B. Change the database password to match backend:**

```bash
sudo -u postgres psql -c "ALTER USER explorer WITH PASSWORD 'your_new_password';"
export DB_PASSWORD="your_new_password"
kill $(cat /tmp/explorer_backend.pid) 2>/dev/null
./scripts/start-backend-service.sh
```

## Verification

After fixing the password, verify the connection:

```bash
# Test database connection
PGPASSWORD=changeme psql -h localhost -U explorer -d explorer -c "SELECT 1;"

# Check backend health
curl http://localhost:8080/health

# Expected response should show:
# "database": "ok" (instead of "error: ...")
# "status": "ok" (instead of "degraded")
```

## Restart Backend

After fixing the password, restart the backend:

```bash
kill $(cat /tmp/explorer_backend.pid) 2>/dev/null
./scripts/start-backend-service.sh
```

## Troubleshooting

### PostgreSQL not running
```bash
sudo systemctl status postgresql
sudo systemctl start postgresql
```

### User doesn't exist
```bash
sudo -u postgres psql -c "\du"  # List all users
```

### Database doesn't exist
```bash
sudo -u postgres psql -c "\l"  # List all databases
```

### Connection still failing
1. Check PostgreSQL is listening on port 5432:
   ```bash
   netstat -tlnp | grep 5432
   ```

2. Check PostgreSQL authentication configuration:
   ```bash
   sudo cat /etc/postgresql/*/main/pg_hba.conf | grep -v "^#"
   ```

3. Verify the password was actually changed:
   ```bash
   PGPASSWORD=changeme psql -h localhost -U explorer -d explorer -c "SELECT current_user;"
   ```

## Notes

- The default password `changeme` is used for development. **Change it in production!**
- The backend reads the password from the `DB_PASSWORD` environment variable
- If using Docker Compose, the password is set via the `DB_PASSWORD` environment variable in `deployment/docker-compose.yml`