System Utilities

Tools and guides for managing, securing, and maintaining your Ethereum on ARM node.

🌐 Network & VPN

Configure networking, PiVPN, and remote access.

PiVPN and WireGuard: “Intra-VPN”
💾 Backup & Restore

Protect your validator keys and node data.

Ethereum on ARM Secure Backup Utility (Restic)
🔒 Security

Harden your node against attacks.

Node Security
🔧 Troubleshooting

Common issues and solutions.

Troubleshooting

Maintenance Essentials

Key Backup Checklist

Before anything goes wrong, ensure you have backed up:

  • ✅ Validator keystores (/home/ethereum/validator_keys/)

  • ✅ Validator mnemonic (written offline, never digitally)

  • ✅ Slashing protection database

  • ✅ JWT secret (/etc/ethereum/jwtsecret)

Full backup guide →

Security Best Practices

  • 🔐 Change default passwords immediately

  • 🔥 Configure UFW firewall

  • 🔑 Use SSH key authentication

  • 🚫 Disable root login

  • 📡 Use VPN for remote access

Security guide →

Quick Commands

# Check disk usage
df -h

# View system logs
sudo journalctl -u geth -f

# Check memory usage
free -h

# Monitor all Ethereum services
sudo systemctl status geth lighthouse-beacon

See also