proxmox/reports/VMID2400_ORIGIN_CERT_INSTALLED.md

VMID 2400 - Cloudflare Origin Certificate Installation Complete

Date: 2026-01-02
Status: ✅ CERTIFICATE INSTALLED AND CONFIGURED

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✅ Completed

• ✅ Cloudflare Origin Certificate installed: /etc/nginx/ssl/cloudflare-origin.crt
• ✅ Private Key installed: /etc/nginx/ssl/cloudflare-origin.key
• ✅ Certificate permissions set (644 for cert, 600 for key)
• ✅ Certificate verified - Valid for *.defi-oracle.io and defi-oracle.io
• ✅ Nginx installed and configured
• ✅ Nginx configuration created: /etc/nginx/sites-available/rpc-thirdweb
• ✅ Site enabled and Nginx reloaded

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Certificate Details

Issuer: CloudFlare Origin SSL Certificate Authority
Subject: CloudFlare Origin Certificate
Valid For:

• *.defi-oracle.io
• defi-oracle.io

Expiration: January 29, 2040 (14 years)

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Nginx Configuration

Configuration File: /etc/nginx/sites-available/rpc-thirdweb
Enabled: /etc/nginx/sites-enabled/rpc-thirdweb

Endpoints Configured:

• HTTP RPC: https://rpc.public-0138.defi-oracle.io:443 → http://127.0.0.1:8545
• WebSocket RPC: https://rpc.public-0138.defi-oracle.io:8443 → http://127.0.0.1:8546
• Health Check: https://rpc.public-0138.defi-oracle.io/health

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Next Steps

1. Update Cloudflare Tunnel Route (Optional)

Since you now have SSL configured, you can optionally update the tunnel route to use HTTPS:

Current (HTTP - works fine):

URL: http://127.0.0.1:8545

Optional (HTTPS - if you want end-to-end encryption):

URL: https://127.0.0.1:443

Note: With Cloudflare Origin Certificate, HTTP is fine since Cloudflare validates the origin. HTTPS is optional but provides additional encryption.

2. Test the Endpoint

# Test health endpoint
curl -k https://rpc.public-0138.defi-oracle.io/health

# Test RPC endpoint
curl -k https://rpc.public-0138.defi-oracle.io \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

3. Verify SSL Certificate

# Check certificate from external
openssl s_client -connect rpc.public-0138.defi-oracle.io:443 -servername rpc.public-0138.defi-oracle.io < /dev/null 2>/dev/null | openssl x509 -noout -text | grep -E 'Subject:|Issuer:|DNS:'

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Security Notes

✅ Origin Certificate: Validates that Cloudflare is connecting to the correct origin
✅ Private Key: Securely stored with 600 permissions (owner read/write only)
✅ SSL/TLS: Encrypted connection between Cloudflare and origin
✅ Real IP: Configured to trust Cloudflare IPs for accurate client IPs

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File Locations

File	Path	Permissions
Certificate	/etc/nginx/ssl/cloudflare-origin.crt	644 (readable)
Private Key	/etc/nginx/ssl/cloudflare-origin.key	600 (owner only)
Nginx Config	/etc/nginx/sites-available/rpc-thirdweb	644
Enabled Site	/etc/nginx/sites-enabled/rpc-thirdweb	Symlink

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Troubleshooting

Certificate Issues

# Verify certificate
ssh root@192.168.11.10 "pct exec 2400 -- openssl x509 -in /etc/nginx/ssl/cloudflare-origin.crt -text -noout"

# Check certificate expiration
ssh root@192.168.11.10 "pct exec 2400 -- openssl x509 -in /etc/nginx/ssl/cloudflare-origin.crt -noout -dates"

Nginx Issues

# Test configuration
ssh root@192.168.11.10 "pct exec 2400 -- nginx -t"

# Check Nginx status
ssh root@192.168.11.10 "pct exec 2400 -- systemctl status nginx"

# View Nginx logs
ssh root@192.168.11.10 "pct exec 2400 -- tail -f /var/log/nginx/rpc-thirdweb-error.log"

SSL Connection Issues

# Test SSL locally
ssh root@192.168.11.10 "pct exec 2400 -- curl -k https://127.0.0.1/health"

# Test from external (after DNS is configured)
curl -k https://rpc.public-0138.defi-oracle.io/health

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Last Updated: 2026-01-02
Status: ✅ READY - Certificate installed, Nginx configured