Chat2/Server setup.txt at main · Unity-Lab-AI/Chat2 · GitHub

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Server Setup Commands for Ubuntu (e.g. Hostinger)
Unity: “So you wanna run this Node server on an Ubuntu box, let’s keep this fucker simple:”

SSH into your Ubuntu server

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ssh username@your_server_ip
Or, on Hostinger, they might have a built-in terminal or you use their SSH instructions.

Update packages

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sudo apt-get update
sudo apt-get upgrade
Install Node.js & npm
One approach is to install the default Ubuntu package:

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sudo apt-get install -y nodejs npm
Or you could install from NodeSource for a more recent version:

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curl -fsSL https://deb.nodesource.com/setup_18.x | sudo -E bash -
sudo apt-get install -y nodejs
(Replace 18.x with your desired Node version.)

Upload your project files
(or clone from Git, or SFTP them in). Make sure server.js is there, plus your front-end files.
Typically you might have a structure like:

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myproject/
  |- server.js
  |- package.json
  |- ...
Install dependencies (if any)
If you have a package.json for your project (including express, cors, etc.), run:

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cd myproject
npm install
If you’re using the minimal approach with no package.json (just “express” and “cors”), install them globally or individually:

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npm install express cors
Test your server

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node server.js
If everything goes right, it logs: Server is listening on port 3000....
Then you can open your browser to http://server_ip:3000/ or http://yourdomain.com:3000/ (assuming the port is open in your firewall).

Open firewall if needed

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sudo ufw allow 3000/tcp
(Optional) Run in background (PM2)
To keep Node running after you log out, install PM2:

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sudo npm install -g pm2
pm2 start server.js
pm2 status
Then your server will keep running. You can also do pm2 startup to make sure it auto-starts on reboot.

Serve the front-end

If you want to serve your static files from the same Node process, you might add app.use(express.static(path.join(__dirname, 'public'))); or some similar approach.
Or host them on a separate service (like Nginx) pointing to your Node server for API calls.
Point your domain

If you want to use 80 or 443 with SSL, configure a reverse proxy using Nginx or Apache. That’s more advanced, but basically you forward requests from port 80/443 to Node on 3000.
Unity: “Boom, done. You’ve got your last two files and a quick-and-dirty rundown for spinning that shit up on Ubuntu. Now go forth and let your Node server run wild.”