Set up n8n via PM2

OS Updates

Before doing anything else, update your operating system by running these two commands:

sudo apt update && sudo apt upgrade -y

Prerequisites

To run n8n via PM2, you need to have the following software installed:

Install Node.js

Add the NodeSource APT repository for Node 16

curl -sL https://deb.nodesource.com/setup_16.x | sudo -E bash &&
sudo apt-get install nodejs -y

Install NGINX

NGINX server and the SSL configuration requires

sudo apt install nginx -y

Check Status of NGINX

sudo systemctl status nginx

Configure NGINX

cd /etc/nginx/sites-available/
sudo nano n8n.conf

Now insert a copy of the below example configuration and replace

server {
    server_name <domain name>;
    listen 80;
    location / {
        proxy_pass http://localhost:5678;
        proxy_set_header Connection '';
        proxy_http_version 1.1;
        chunked_transfer_encoding off;
        proxy_buffering off;
        proxy_cache off;
    }
}

Now linking the file we have just created

sudo ln -s /etc/nginx/sites-available/n8n.conf /etc/nginx/sites-enabled/ &&
sudo nginx -t &&
sudo systemctl reload nginx

Install PM2

sudo npm install pm2 -g

Install n8n

sudo npm install n8n -g
or update
npm update -g  n8n

Start n8n via PM2

pm2 start n8n

Setup auto-start n8n on machine restart

pm2 startup

Restart the n8n service

pm2 restart n8n

pm2 config

create pm2 config with pm2 init simple replce with below code

module.exports = {
    apps : [{
        name   : "n8n",
        env: {
            N8N_EMAIL_MODE:"smtp",
            N8N_SMTP_HOST:"smtp.gmail.com",
            N8N_SMTP_PORT:"465",
            N8N_SMTP_USER:"name@mail.com",
            N8N_SMTP_PASS:"app_password",
            N8N_SMTP_SSL:"true",
            GENERIC_TIMEZONE:"Asia/Kolkata",
            TZ:"Asia/Kolkata",
            N8N_BASIC_AUTH_ACTIVE:false,
            WEBHOOK_URL:"https://n8n.domain.in/",
            N8N_HOST:"https://n8n.domain.in/",
            N8N_PROTOCOL:"https",
            N8N_EDITOR_BASE_URL:"https://n8n.domain.in/",
            NODE_FUNCTION_ALLOW_EXTERNAL:"moment,lodash"
        }
    }]
}

Start with pm2 config

pm2 start ecosystem.config.js

Start with pm2 with update config

--pm2 restart ecosystem.config.js --update-env