🧠 1. INTRODUCTION: WHAT YOU ARE BUILDING
In this guide, you will learn how to install and run n8n across three environments:
- Windows PC (for learning)
- MacBook (for development)
- VPS server (for production)
This is not just installation. This is a complete real-world automation system setup used in production environments.
By the end of this guide, you will understand:
- How automation systems work
- How servers run 24/7 bots
- How to install software using commands
- How to fix common errors
- How to keep systems running permanently
🧠 2. VERY IMPORTANT CONCEPT: WHAT IS A COMMAND?
Before installing anything, you must understand this:
👉 A command is a text instruction you type into a computer.
Instead of clicking buttons, you write instructions.
Example:
node -v
This command means:
👉 “Check if Node.js is installed and show its version”
🧠 3. WHERE DO YOU WRITE COMMANDS?
This is the most important beginner question.
You do NOT type commands in normal apps.
You use special tools:
💻 WINDOWS
You use:
- Command Prompt (CMD)
- PowerShell
🍎 MACBOOK
You use:
- Terminal
🌐 VPS SERVER
You use:
- PuTTY (SSH connection tool)
Now we will explain each one step by step.
💻 4. WINDOWS FULL SETUP (BEGINNER TO ADVANCED)
4.1 WHAT IS CMD?
CMD stands for Command Prompt.
It is a black screen where you type commands.
4.2 HOW TO OPEN CMD
Follow steps:
- Press Windows key
- Type:
cmd
- Click Command Prompt
You will see:
C:\Users\YourName>
Now your system is ready.
4.3 WHAT IS POWERSHELL?
PowerShell is advanced CMD.
It is more powerful and modern.
4.4 HOW TO OPEN POWERSHELL
- Press Windows key
- Type:
powershell
- Open it
You will see:
PS C:\Users\YourName>
4.5 INSTALL NODE.JS (REQUIRED FOR N8N)
Go to:
Download LTS version and install.
4.6 CHECK NODE INSTALLATION
node -v
npm -v
If you see versions, it is installed.
4.7 INSTALL N8N ON WINDOWS
npm install -g n8n
This installs n8n globally.
4.8 RUN N8N
n8n
Open browser:
http://localhost:5678
🍎 5. MACBOOK FULL SETUP
5.1 WHAT IS TERMINAL?
Terminal is Mac command tool.
It is same as CMD but for Mac.
5.2 HOW TO OPEN TERMINAL
- Press:
Command + Space
- Type:
terminal
- Press Enter
You will see:
MacBook-Pro:~ user$
5.3 INSTALL HOMEBREW
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
5.4 INSTALL NODE.JS
brew install node
5.5 CHECK INSTALLATION
node -v
npm -v
5.6 INSTALL N8N
npm install -g n8n
5.7 RUN N8N
n8n
Open:
http://localhost:5678
🌐 6. VPS FULL SETUP (PRODUCTION SYSTEM)
6.1 WHAT IS VPS?
A VPS is a remote Linux computer that runs 24/7.
This is where real automation systems run.
6.2 HOW TO CONNECT VPS (PUTTY)
Steps:
- Install PuTTY
- Open PuTTY
- Enter IP address
- Click Open
6.3 LOGIN TO VPS
login as:
Type:
root
Enter password.
Now:
root@server:~#
6.4 UPDATE SERVER
apt update && apt upgrade -y
6.5 INSTALL NODE.JS
curl -fsSL https://deb.nodesource.com/setup_20.x | bash -
apt install -y nodejs
6.6 CHECK NODE
node -v
npm -v
6.7 INSTALL N8N
npm install -g n8n
6.8 RUN N8N
n8n
Open:
http://YOUR_VPS_IP:5678
⚠️ 7. PROBLEM: VPS CLOSE → N8N STOPS
Solution: PM2
PM2
7.1 INSTALL PM2
npm install -g pm2
7.2 START N8N
pm2 start n8n
7.3 CHECK STATUS
pm2 list
7.4 AUTO START
pm2 startup
pm2 save
💾 8. LOW RAM VPS EXPLANATION
If VPS has 1GB or 2GB RAM:
Problems:
- slow performance
- crashes during installation
- high CPU usage
FIX: SWAP MEMORY
fallocate -l 4G /swapfile
chmod 600 /swapfile
mkswap /swapfile
swapon /swapfile
Result:
- stable system
- reduced crashes
- slower but reliable performance
🧠 9. FINAL SYSTEM ARCHITECTURE
| System | Role |
|---|---|
| Windows | Learning |
| MacBook | Development |
| VPS | Production |
🚀 10. REAL-WORLD FLOW
- Build workflow on Windows
- Improve on MacBook
- Deploy on VPS
- Run 24/7 automation
🧠 11. FINAL CONCLUSION
You now understand:
- How to write commands
- How to open CMD, Terminal, PuTTY
- How to install Node.js
- How to install n8n
- How to run production systems
- How to fix low RAM issues
- How to keep system running using PM2