n8n ကို VPS တွင် Self-host လုပ်ခြင်း

ဘာကြောင့် Self-Host လုပ်သင့်သလဲ?

	n8n Cloud	Self-Hosted
Cost	$20+/month	VPS: ~$5-10/month
Workflow Limit	Plan ပေါ်မူတည်ပြီး	Unlimited
Data Privacy	Cloud တွင်	ကိုယ်ပိုင် Server
Customization	Limited	Full Control
Maintenance	None (Managed)	ကိုယ်တိုင် Update

VPS Requirements

Minimum Specs:
  CPU:  1 vCPU
  RAM:  1 GB (2 GB recommended)
  Disk: 20 GB SSD
  OS:   Ubuntu 22.04 LTS

Recommended Providers:
  DigitalOcean, Vultr, Linode, Hetzner, AWS EC2

Docker Compose ဖြင့် Deploy လုပ်နည်း

Step 1: VPS ကို Setup ပါ

# Ubuntu 22.04 တွင် Docker Install
curl -fsSL https://get.docker.com | sh
sudo usermod -aG docker $USER
newgrp docker

# Docker Compose Install
sudo apt install docker-compose-plugin -y

Step 2: n8n Directory ဖန်တီးပါ

mkdir ~/n8n && cd ~/n8n
mkdir -p data postgres-data

Step 3: docker-compose.yml ဖန်တီးပါ

version: '3.8'

services:
  postgres:
    image: postgres:15-alpine
    restart: always
    environment:
      POSTGRES_USER: n8n
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
      POSTGRES_DB: n8n
    volumes:
      - postgres-data:/var/lib/postgresql/data

  n8n:
    image: docker.n8n.io/n8nio/n8n
    restart: always
    ports:
      - "5678:5678"
    environment:
      - N8N_HOST=${DOMAIN}
      - N8N_PORT=5678
      - N8N_PROTOCOL=https
      - WEBHOOK_URL=https://${DOMAIN}/
      - N8N_ENCRYPTION_KEY=${ENCRYPTION_KEY}
      - DB_TYPE=postgresdb
      - DB_POSTGRESDB_HOST=postgres
      - DB_POSTGRESDB_PORT=5432
      - DB_POSTGRESDB_DATABASE=n8n
      - DB_POSTGRESDB_USER=n8n
      - DB_POSTGRESDB_PASSWORD=${POSTGRES_PASSWORD}
      - EXECUTIONS_DATA_PRUNE=true
      - EXECUTIONS_DATA_MAX_AGE=336    # 14 days
    volumes:
      - ./data:/home/node/.n8n
    depends_on:
      - postgres

volumes:
  postgres-data:

Step 4: Environment Variables ဖန်တီးပါ

# .env file
DOMAIN=n8n.yourdomain.com
POSTGRES_PASSWORD=super_secure_password_here
ENCRYPTION_KEY=random_32_character_string_here

# Generate Encryption Key:
openssl rand -hex 32

Step 5: n8n ကို Start ပါ

docker compose up -d

# Log ကြည့်ပါ
docker compose logs -f n8n

Nginx Reverse Proxy + SSL ချိတ်ဆက်ပါ

Production မှာ n8n ကို HTTPS ဖြင့် Access လုပ်ဖို့ Nginx နဲ့ Let’s Encrypt ကိုသုံးသည်:

Internet HTTPS :443

Nginx SSL Termination

n8n localhost:5678

Nginx ကို Reverse Proxy ဖြင့် HTTPS ချိတ်ဆက်ပြီး n8n ကို ပြောင်းပေးသည်

# Nginx Install
sudo apt install nginx certbot python3-certbot-nginx -y

# Nginx Config ဖန်တီးပါ
sudo nano /etc/nginx/sites-available/n8n

server {
    server_name n8n.yourdomain.com;

    location / {
        proxy_pass http://localhost:5678;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_cache_bypass $http_upgrade;

        # WebSocket support (n8n needs it)
        proxy_read_timeout 86400;
    }
}

# Enable Config
sudo ln -s /etc/nginx/sites-available/n8n /etc/nginx/sites-enabled/
sudo nginx -t   # Test config
sudo systemctl reload nginx

# SSL Certificate ရယူပါ (Free)
sudo certbot --nginx -d n8n.yourdomain.com

Domain ၏ DNS A Record ကို VPS IP Address ကို ညွှန်ပါ:

A   n8n.yourdomain.com   →   123.456.789.0

DNS Propagation အတွက် ၁-၂ မိနစ် စောင့်ပါ။

n8n Update ပြုလုပ်နည်း

# Latest Version ဆွဲပါ
docker compose pull n8n

# Restart (Downtime < 30 seconds)
docker compose up -d n8n

# Version စစ်ကြည့်ပါ
docker compose exec n8n n8n --version

Backup Strategy

n8n Workflow Export JSON files

PostgreSQL Dump pg_dump

Upload to S3 / GDrive Off-site backup

Daily Backup — Workflows + Database ကို Off-site သိမ်းဆည်းသည်

# Automated Backup Script (Daily Cron on VPS)
#!/bin/bash

DATE=$(date +%Y%m%d_%H%M%S)
BACKUP_DIR="/root/backups"
mkdir -p $BACKUP_DIR

# 1. Workflow JSON Backup
docker compose exec n8n n8n export:workflow \
  --all \
  --output=$BACKUP_DIR/workflows_$DATE.json

# 2. Database Backup
docker compose exec postgres pg_dump \
  -U n8n n8n > $BACKUP_DIR/db_$DATE.sql

# 3. Compress
tar -czf $BACKUP_DIR/n8n_backup_$DATE.tar.gz \
  $BACKUP_DIR/workflows_$DATE.json \
  $BACKUP_DIR/db_$DATE.sql

# 4. Cleanup old backups (>30 days)
find $BACKUP_DIR -name "*.tar.gz" -mtime +30 -delete

echo "Backup complete: n8n_backup_$DATE.tar.gz"

# VPS တွင် Daily 2am Cron ထည့်ပါ
crontab -e
0 2 * * * /root/backup-n8n.sh >> /var/log/n8n-backup.log 2>&1

n8n Workflows ကို JSON Export ပြီး Git Repository တွင် Push လုပ်ပါ။ Team Collaboration နှင့် Rollback တွင် အလွန်အသုံးဝင်သည်:

n8n export:workflow --all --output=./workflows/
git add workflows/
git commit -m "feat: add email automation workflow"
git push

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