How to use multiple Heroku accounts, configure the app for production, and websockets

multiple_heroku.md

1. Create a new SSH key pair: ssh-keygen -t rsa -C "your user email"
2. Call the key pair something unique: mynewheroku_rsa
3. In the app folder, add Procfile
4. Add the regular heroku remote: git remote add heroku git@heroku.com:<appname>.git
5. Edit the file ~/.ssh/config

    Host mynewheroku
        HostName heroku.com
        IdentityFile ~/.ssh/mynewheroku_rsa
        IdentitiesOnly yes

6. Edit the file .git/config in the head of your folder. Add another remote, that uses the key-pair:

    [remote "heroku-app"]
        url = git@mynewheroku:<appname>.git
        fetch = +refs/heads/*:refs/remotes/heroku/*

7. Run heroku login, enter user/pass and select the key created in 1 as your key
8. Now, you have 2 heroku remotes: 1. To push to heroku, use git push heroku-app master 2. The original heroku will be used by the heroku console to control the app
9. To change the heroku app to production, execute heroku config:set NODE_ENV=production
10. To add support for web sockets, execute heroku labs:enable websockets This is experimental!!!!! (to disable execute heroku labs:disable websockets)