# Info Endpoint Recheck - info.defi-oracle.io

**Date**: 2026-01-05  
**Status**: ⚠️ **INTERMITTENT 502 ERRORS**

---

## Current Status

### Test Results

**Root Endpoint (`/`)**:
- ✅ **Local Access**: Returns HTML (200 OK, 7157 bytes)
- ⚠️ **Public HTTPS**: Intermittent 502 errors (sometimes works, sometimes fails)
- **HTTP Headers**: Shows HTTP/2 200 when working
- **Content-Type**: `text/html` when successful

**JSON Endpoints**:
- `/chain.json`: Intermittent 502 errors
- `/api/chain`: Intermittent 502 errors

---

## Observations

1. **Nginx is working correctly**:
   - All endpoints return 200 OK when accessed locally
   - Files are being served correctly
   - No errors in Nginx logs for successful requests

2. **Cloudflare Tunnel**:
   - Service is running (`cloudflared.service` active)
   - Tunnel is connected
   - Intermittent connection issues

3. **Intermittent Nature**:
   - Sometimes requests succeed (HTTP 200)
   - Sometimes requests fail (HTTP 502)
   - Suggests timeout or connection pool issues

---

## Possible Causes

1. **Cloudflare Tunnel Timeout**:
   - Tunnel may be timing out on some requests
   - Connection pool exhaustion
   - Rate limiting

2. **Cloudflare Edge Caching**:
   - Edge cache may be serving stale 502 errors
   - Cache needs to be purged

3. **Connection Limits**:
   - Tunnel may have connection limits
   - Multiple simultaneous requests may cause issues

4. **Network Latency**:
   - High latency causing timeouts
   - Cloudflare edge location issues

---

## Recommendations

### Immediate Actions

1. **Purge Cloudflare Cache**:
   - Go to Cloudflare Dashboard
   - Navigate to Caching → Purge Everything
   - Wait 1-2 minutes for propagation

2. **Check Tunnel Health**:
   - Verify tunnel status in Cloudflare Dashboard
   - Check for any tunnel errors or warnings
   - Review tunnel metrics

3. **Monitor Patterns**:
   - Track when 502 errors occur
   - Check if errors are time-based
   - Monitor connection patterns

### Configuration Adjustments

1. **Increase Timeouts** (if needed):
   - Adjust Cloudflare tunnel timeout settings
   - Increase Nginx proxy timeouts
   - Review connection pool settings

2. **Enable Caching**:
   - Configure Cloudflare to cache static content
   - Set appropriate cache headers
   - Use Cloudflare's HTML minification

---

## Verification Commands

### Test Local Access
```bash
ssh root@192.168.11.10 "pct exec 2400 -- curl -s http://127.0.0.1:80 -H 'Host: info.defi-oracle.io'"
```

### Test Public Access
```bash
curl -s https://info.defi-oracle.io
curl -s https://info.defi-oracle.io/chain.json
curl -s https://info.defi-oracle.io/api/chain
```

### Check Nginx Logs
```bash
ssh root@192.168.11.10 "pct exec 2400 -- tail -20 /var/log/nginx/info-defi-oracle-access.log"
```

### Check Cloudflared Status
```bash
ssh root@192.168.11.10 "pct exec 2400 -- systemctl status cloudflared"
```

---

## Current Working State

✅ **Nginx Configuration**: Correct and serving files properly  
✅ **File System**: Files exist and are accessible  
✅ **Local Routing**: All endpoints work when accessed directly  
⚠️ **Cloudflare Tunnel**: Intermittent connection issues causing 502 errors  

**Conclusion**: The infrastructure is correctly configured. The 502 errors are likely due to Cloudflare tunnel connection issues or edge caching, not Nginx routing problems.
