Connection refused with port 3000

I am following this tutorial for my node application. Actually I want to use root folder for angular and sub directory ‘api’ for node js API. So I’m trying to connect port 3000 for node js app. But I am getting connection refused message. This port in not in listen state. So I have followed this link. /etc/systemd/system/listen-3000.service

But still I have the same issue. My /etc/nginx/sites-available/default is,

server {
	listen 80 default_server;
	listen [::]:80 default_server;

	root /var/www/html;

	# Add index.php to the list if you are using PHP
	index index.html index.htm index.ts;

	return 301$request_uri;

	location / {	
		try_files $uri $uri/ =404;

	location /api/ {
		proxy_pass http://localhost:3000;
	        proxy_http_version 1.1;
	        proxy_set_header Upgrade $http_upgrade;
	        proxy_set_header Connection 'upgrade';
	        proxy_set_header Host $host;
	        proxy_cache_bypass $http_upgrade;


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Hi @kenlyle64,

So you’ve configured a reverse proxy using Nginx. That’s the first step!

It seems to me like your Application is not started/listening to the proper port.

What I’ll suggest is to start your NodeJS application on port 3000 and type in the droplet the following

netstat -tlupen

Paste the output of the command here.

Do you see port 3000 there?