Heroku

Installation

• Windows 10 Laptop

Concepts

• all Heroku applications run in a collection of lightweight Linux containers called Dynos. To find out the dynos:

heroku ps

• The set of dynos declared in your Procfile and managed by the dyno manager via heroku ps:scale are known as the dyno formation. These dynos do the app’s regular business (such as handling web requests and processing background jobs) as it runs. When you wish to do one-off administrative or maintenance tasks for the app, or execute some task periodically using Heroku Scheduler, you can spin up a one-off dyno.

Add Ons

Postgres

• DB info dashboard -> <APPLICATION> -> Resources

Operation

Logging

heroku logs --tail

Example

• from official tutorial

PS C:\Temp\python-getting-started> heroku login

• clone example
• create app and push code
• start the app

PS C:\Temp\python-getting-started> heroku ps:scale web=1
Scaling dynos... done, now running web at 1:Free
PS C:\Temp\python-getting-started> heroku open
// opens https://arcane-peak-78109.herokuapp.com/

• open the dashboard
• stop it or scale it down to 0

heroku ps:scale web=0

• prepare for running locally

PS C:\Temp\python-getting-started> python -m venv venv
PS C:\Temp\python-getting-started> .\venv\Scripts\activate
(venv) PS C:\Temp\python-getting-started> pip install -r .\requirements.txt

• run it locally

(venv) PS C:\Temp\python-getting-started> python manage.py collectstatic
(venv) PS C:\Temp\python-getting-started> heroku local -f .\Procfile.windows

• open it http://localhost:5000/

Resources

• Tutorial
• Heroku dashboard