🚀 n8n Self-Hosted Installation Script

Automated installation script untuk deploy n8n self-hosted di Ubuntu/Debian dengan satu command.

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✨ Fitur Utama

Fitur	Deskripsi
🔍 Version Check	Validasi versi software yang terinstall
🖥️ OS Detection	Auto-detect Ubuntu/Debian
💾 Resource Check	Cek RAM & disk sebelum install
🐳 Docker	Install Docker Engine + Compose
🐘 PostgreSQL	Database production-ready
🌐 Nginx/Caddy	Pilihan reverse proxy
🔒 SSL/HTTPS	Let's Encrypt otomatis
🛡️ Firewall	UFW auto-configured
🔐 Auto Credentials	Generate password & encryption key

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🎯 Keunggulan

• One-Click Install - Seluruh stack terinstall otomatis
• Production Ready - PostgreSQL, SSL, Firewall sudah dikonfigurasi
• Dual Proxy Option - Pilih Nginx (traditional) atau Caddy (modern)
• Auto SSL Renewal - Sertifikat Let's Encrypt auto-renew
• Secure by Default - Password random, encryption key, firewall enabled
• Docker-based - Easy update, backup, dan maintenance
• Colored Output - Status jelas dengan warna (hijau/kuning/merah)
• Error Handling - Validasi input dan pengecekan error

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📋 Requirements

Requirement	Minimum	Recommended
OS	Ubuntu 20.04 / Debian 11	Ubuntu 24.04 / Debian 12
RAM	1 GB	2 GB+
Disk	10 GB	20 GB+
CPU	1 Core	2 Cores+
Domain	✅ Required	Pointed to server IP
Access	Root/Sudo	-

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🚀 Instalasi

Quick Install

# Download script
curl -O https://raw.githubusercontent.com/bangden07/n8n-Automatic-Installation-Script/refs/heads/main/install-n8n.sh

# Beri permission
chmod +x install-n8n.sh

# Jalankan
sudo ./install-n8n.sh

Manual Upload

# Dari Windows ke Server
scp install-n8n.sh user@server:/tmp/

# Di server
chmod +x /tmp/install-n8n.sh
sudo /tmp/install-n8n.sh

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📖 Cara Penggunaan

1. Jalankan Script

sudo ./install-n8n.sh

2. Ikuti Prompt

Script akan meminta:

Input	Contoh	Keterangan
Domain	n8n.example.com	Harus sudah pointing ke IP server
Email	admin@example.com	Untuk sertifikat SSL
Proxy	1 atau 2	1=Nginx, 2=Caddy
Timezone	Asia/Jakarta	Default: Asia/Jakarta

3. Tunggu Instalasi

Script akan menjalankan 10 langkah:

1. System Update
2. Docker Installation
3. Firewall Configuration
4. Reverse Proxy Installation
5. SSL Certificate
6. Directory Structure
7. Docker Compose Configuration
8. Start Containers
9. Verification
10. Complete!

4. Akses n8n

Setelah selesai, buka browser:

https://your-domain.com

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🔧 Detail Fungsi

Pre-Installation

Fungsi	Deskripsi
print_banner()	Tampilkan ASCII art banner
check_root()	Validasi running as root
check_os()	Detect Ubuntu/Debian
check_resources()	Cek RAM, disk, CPU
check_existing_installations()	Cek Docker, Nginx, Node.js

Utility Functions

Fungsi	Deskripsi
print_status()	Print colored status messages
progress_bar()	Tampilkan progress bar visual
check_version()	Cek dan tampilkan versi software
generate_password()	Generate random password
generate_encryption_key()	Generate 64-char hex key
validate_domain()	Validasi format domain
validate_email()	Validasi format email

Installation Functions

Fungsi	Deskripsi
system_update()	apt update && upgrade
install_docker()	Install Docker dari official repo
configure_firewall()	Setup UFW (22, 80, 443)
install_nginx()	Install Nginx + Certbot
install_caddy()	Install Caddy (auto-SSL)
obtain_ssl_certificate()	Request cert dari Let's Encrypt
create_n8n_directory()	Buat ~/n8n dan subdirectories
create_docker_compose()	Generate docker-compose.yml
start_n8n()	Pull images & start containers
verify_installation()	Cek semua services running
display_summary()	Tampilkan credentials & info

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📂 Struktur File

Setelah instalasi:

~/n8n/
├── docker-compose.yml    # Docker configuration
├── .env                  # Environment variables (chmod 600)
├── credentials.txt       # Saved credentials (chmod 600)
├── data/                 # n8n data directory
├── postgres-data/        # PostgreSQL data
└── backup/               # Backup directory

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🛠️ Commands Berguna

# Lihat logs
docker logs -f n8n

# Restart n8n
cd ~/n8n && docker compose restart

# Stop n8n
cd ~/n8n && docker compose down

# Start n8n
cd ~/n8n && docker compose up -d

# Update n8n
cd ~/n8n && docker compose pull && docker compose up -d

# Backup data
cp -r ~/n8n/data ~/n8n/backup/$(date +%Y%m%d)

# Lihat status container
docker compose ps

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🔒 Security Notes

• ✅ Passwords di-generate random (24 karakter)
• ✅ Encryption key 64-karakter hex
• ✅ File credentials chmod 600
• ✅ Firewall hanya buka port 22, 80, 443
• ✅ SSL/HTTPS enforced
• ✅ PostgreSQL tidak exposed ke public

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❓ Troubleshooting

Script exit setelah checking

Problem: Script berhenti setelah "Checking existing installations"

Solution: Pastikan menggunakan versi script terbaru yang sudah remove set -e

SSL Certificate gagal

Problem: Certbot gagal mendapatkan certificate

Solution:

1. Pastikan domain sudah pointing ke IP server
2. Tunggu DNS propagation (bisa sampai 24 jam)
3. Jalankan manual: sudo certbot --nginx -d your-domain.com

n8n tidak bisa diakses

Problem: Browser tidak bisa buka https://domain.com

Solution:

# Cek container running
docker ps

# Cek logs
docker logs n8n

# Cek nginx/caddy
systemctl status nginx
# atau
systemctl status caddy

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📝 License

MIT License - Free to use, modify, and distribute.

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🙏 Credits

Script ini dibuat berdasarkan referensi:

• n8n Official Docs
• DigitalOcean Tutorial
• Hostinger Guide
• Sliplane Blog