Deploy a NodeJS app on Heroku in less than 1 minute

Actually, the time you need to deploy an app depends on how fast you are to copy & paste.

Prerequisites

Your code must be hosted in a git repository.

Steps to set up the environment the first time

  1. Sign up (or log in) to heroku.com
  2. download heroku’s command for the console (select the right version for your operating system).
  3. be sure the command is installed: heroku -v (you should see some output)
  4. launch heroku loginand log in with your email and password.
  5. Upload ssh keys to heroku: heroku keys:add
  6. ssh -v [email protected]: even if the command seems to fail, check that the long output contains the row
    debug1: Authentication succeeded (publickey).
    

    Generally it is one of the last 5-6 rows. If this log is present, everything is set up correctly.

Steps to set up the environment with the NodeJs app

  • Set the host port of your application as an environment variable:
    const port = process.env.PORT || 3000 ;  
    ... 
    app.listen(port);
    
  • set the npm start script, in package.json:
"scripts": {
   "start": "node server.js",
   ...
   }

  • Check that the app runs correctly: npm start
  • launch heroku create: will create a new remote for your repository named heroku
  • git push heroku : will push your code to heroku
  • heroku open: will open your webapp in the browser

For every modification you do to your code, just commit and git push heroku!