proxmox/reports/status/RPC_ENDPOINT_DIAGNOSTICS_REPORT.md

RPC Endpoint Diagnostics Report

Date: 2025-12-27 00:16 UTC
Endpoint: https://rpc-http-pub.d-bis.org

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Executive Summary

✅ PUBLIC ENDPOINT IS OPERATIONAL

The RPC endpoint is working correctly. All components are healthy and responding as expected.

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Component Status

✅ VMID 2502 (besu-rpc-3) - OPERATIONAL

Container Status:

• Status: Running
• IP: 192.168.11.252
• Hostname: besu-rpc-3
• Uptime: 4 days, 16 hours, 35 minutes
• Load Average: 6.90, 3.95, 3.49

Services:

• ✅ besu-rpc.service: Active (running) - 6+ hours uptime
• ✅ nginx.service: Active (running) - 4+ days uptime

Listening Ports:

• ✅ Port 443 (HTTPS) - Nginx
• ✅ Port 80 (HTTP) - Nginx
• ✅ Port 8545 (RPC HTTP) - Besu
• ✅ Port 30303 (P2P) - Besu
• ✅ Port 9545 (Metrics) - Besu

System Resources:

• Memory: 16GB total, 3.2GB used, 12GB available (20% usage)
• Disk: 196GB total, 2.7GB used, 184GB available (2% usage)
• Swap: 512MB (unused)

RPC Functionality:

• ✅ Chain ID: 0x8a (138 decimal) - CORRECT
• ✅ Block Number: ~262,700+ (syncing actively)
• ✅ Peer Count: 3 peers connected
• ✅ Sync Status: Fully synced (false)
• ✅ Direct RPC access: WORKING
• ✅ Nginx proxy: WORKING
• ✅ Network access: WORKING

Nginx Configuration:

• ✅ Configuration syntax: OK
• ✅ SSL certificates: Configured
• ✅ Server name: rpc-http-pub.d-bis.org
• ✅ Proxy to: 127.0.0.1:8545
• ✅ Cloudflare IPs: Trusted for real IP

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✅ Cloudflared Tunnel (VMID 102) - OPERATIONAL

Container Status:

• Status: Running
• Host: 192.168.11.12 (pve2)
• Storage: thin1:vm-102-disk-0,size=2G

Services Running:

• ✅ cloudflared.service (main service with token)
• ✅ cloudflared-ml110.service
• ✅ cloudflared-r630-01.service
• ✅ cloudflared-r630-02.service

Configuration:

• Main service uses token-based authentication
• RPC endpoints are configured via Cloudflare Dashboard/API
• Tunnel is routing traffic correctly to 192.168.11.252:443

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✅ Public Endpoint - OPERATIONAL

URL: https://rpc-http-pub.d-bis.org

Test Results:

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x8a"
}

Status: ✅ WORKING CORRECTLY

Response Time: < 1 second SSL: Valid certificate HTTP Version: HTTP/2

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Network Flow

Internet Client
  ↓
Cloudflare DNS (rpc-http-pub.d-bis.org)
  ↓
Cloudflare Edge (SSL termination, DDoS protection)
  ↓
Cloudflare Tunnel (encrypted)
  ↓
VMID 102: cloudflared.service (192.168.11.12)
  ↓
VMID 2502: Nginx (192.168.11.252:443)
  ↓
VMID 2502: Besu RPC (127.0.0.1:8545)
  ↓
Response: {"jsonrpc":"2.0","id":1,"result":"0x8a"}

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Test Commands

Test Public Endpoint

curl -X POST https://rpc-http-pub.d-bis.org \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'

Expected Response:

{"jsonrpc":"2.0","id":1,"result":"0x8a"}

Test Direct Network Access

curl -k -X POST https://192.168.11.252:443 \
  -H "Host: rpc-http-pub.d-bis.org" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'

Test Internal RPC

ssh root@192.168.11.10 "pct exec 2502 -- curl -s -X POST http://127.0.0.1:8545 \
  -H 'Content-Type: application/json' \
  -d '{\"jsonrpc\":\"2.0\",\"method\":\"eth_chainId\",\"params\":[],\"id\":1}'"

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Health Checks

VMID 2502 Service Status

ssh root@192.168.11.10 "pct exec 2502 -- systemctl status besu-rpc nginx"

VMID 2502 Resource Usage

ssh root@192.168.11.10 "pct exec 2502 -- free -h && df -h /"

Cloudflared Tunnel Status

ssh root@192.168.11.12 "pct exec 102 -- systemctl status cloudflared.service"

Check Recent Logs

# Besu logs
ssh root@192.168.11.10 "pct exec 2502 -- journalctl -u besu-rpc -n 50"

# Nginx logs
ssh root@192.168.11.10 "pct exec 2502 -- tail -20 /var/log/nginx/error.log"

# Cloudflared logs
ssh root@192.168.11.12 "pct exec 102 -- journalctl -u cloudflared.service -n 50"

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Recommendations

Current Status: ✅ All Systems Operational

No immediate action required. All components are functioning correctly.

Monitoring Recommendations

1. Monitor Besu Sync Status

   • Check block height periodically
   • Ensure peer count stays above 2

2. Monitor Resource Usage

   • Memory usage is healthy (20%)
   • Disk usage is minimal (2%)
   • Load average is acceptable

3. Monitor Nginx Logs

   • Watch for error patterns
   • Monitor access patterns

4. Monitor Cloudflared Tunnel

   • Ensure service stays running
   • Check for connection errors

Optional Improvements

1. Set up automated health checks
2. Configure alerting for service failures
3. Monitor RPC response times
4. Track API usage patterns

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Troubleshooting Reference

If Public Endpoint Fails

1. Check VMID 2502 container status
2. Check Besu RPC service
3. Check Nginx service
4. Check Cloudflared tunnel service (VMID 102)
5. Test direct network access to 192.168.11.252:443
6. Test internal RPC on 127.0.0.1:8545

Common Issues

• Error 1033/530: Cloudflared tunnel not running or misconfigured
• Connection refused: Service not running or firewall blocking
• Wrong chain ID: Besu configuration issue
• SSL errors: Certificate expiration or misconfiguration

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Last Updated: 2025-12-27 00:16 UTC
Status: ✅ ALL SYSTEMS OPERATIONAL