Node.js Reference

Environment Variables

Set these in the Galaxy deployment form or your app's Settings page.

Core Variables

Common Application Variables

Advanced Configuration

Custom Build Commands

If you need build steps (bundling, TypeScript compilation, etc.), define a build script in your package.json:

{
  "scripts": {
    "build": "tsc && webpack",
    "start": "node dist/server.js"
  }
}

Then in Galaxy, set:

• Build Command: npm run build
• Start Command: npm start

Galaxy runs install, then build, then start.

Health Check Endpoint

Create a simple health check endpoint for Galaxy to monitor:

app.get('/health', (req, res) => {
  res.status(200).json({
    status: 'ok',
    timestamp: new Date().toISOString()
  });
});

In the Galaxy deployment form, set Health Check Path to /health. Galaxy checks this endpoint regularly. If it fails, Galaxy knows something's wrong.

Supported Versions

Galaxy supports Node.js 18.x, 20.x, 22.x, and later versions. For best compatibility, use Node.js 20.x or 22.x.

Select your Node.js version via the Docker Preset option during deployment or in your app's Settings page.

Need Help?

• Galaxy Support