Django on Heroku

Slides from my lunch and learn presentation @waveaccounting.

Transcript

1. Django on Heroku Michael Warkentin @mwarkentin Friday, 16 March, 12
2. What is Heroku? Friday, 16 March, 12
3. A Polyglot Platform as a Service Friday, 16 March, 12
4. Ruby Friday, 16 March, 12
5. Python Friday, 16 March, 12
6. Node.js Friday, 16 March, 12
7. Java Friday, 16 March, 12
8. Why Heroku? Friday, 16 March, 12
9. Empower your devs Friday, 16 March, 12
10. Somewhere in Panama... Friday, 16 March, 12
11. Friday, 16 March, 12
12. Somewhere in Canada... Friday, 16 March, 12
13. Friday, 16 March, 12
14. 1.5 hours from initial idea to functioning deployment Friday, 16 March, 12
15. Over 30 addons including: • Redis • New Relic • Papertrail • RabbitMQ • Sentry • Sendgrid Friday, 16 March, 12
16. Heroku Commands Friday, 16 March, 12
17. Creating a new app heroku create --stack cedar Friday, 16 March, 12
18. Deploying master to Heroku git push heroku master Friday, 16 March, 12
19. Deploying a branch to Heroku git push heroku <branch>:master Friday, 16 March, 12
20. Procfile web: python app/manage.py run_gunicorn -b 0.0.0.0:$PORT -w 3 worker: python app/manage.py celeryd Friday, 16 March, 12
21. Viewing processes heroku ps Friday, 16 March, 12
22. Scaling processes heroku ps:scale web=2 worker=4 Friday, 16 March, 12
23. Setting config variables heroku config:add DEBUG=True Friday, 16 March, 12
24. Tailing app logs heroku logs --tail Friday, 16 March, 12
25. Database backup heroku pgbackups:capture Friday, 16 March, 12
26. Copy production database to staging heroku pgbackups:restore DATABASE `heroku pgbackups:url --app app-prod` --app app-staging Friday, 16 March, 12
27. Local development with gunicorn and foreman Friday, 16 March, 12
28. Run local environment from the same Procfile Friday, 16 March, 12
29. $ foreman start Friday, 16 March, 12
30. Add local environment variables to .env file Friday, 16 March, 12
31. What can we learn from Heroku? Friday, 16 March, 12
32. http://www.12factor.net/ Friday, 16 March, 12
33. Store config in the environment Friday, 16 March, 12
34. No local_settings.py Friday, 16 March, 12
35. AWS_SECRET_ACCESS_KEY =”F234324jskfj” Friday, 16 March, 12
36. AWS_SECRET_ACCESS_KEY =”F234324jskfj” Friday, 16 March, 12
37. AWS_SECRET_ACCESS_KEY = os.environ.get('AWS_SECRET_AC CESS_KEY') Friday, 16 March, 12
38. New version created on: • Every code push • `git push heroku master` • Every config change • `heroku config:add DEBUG=True` Friday, 16 March, 12
39. Live demo OMFG!!1 Friday, 16 March, 12
40. Further reading • http://devcenter.heroku.com/articles/django • http://rdegges.com/devops-django-part-3-the-heroku-way • http://rdegges.com/devops-django-part-4-choosing- heroku • https://github.com/waveaccounting/public-site/pull/5 Friday, 16 March, 12
41. Unanswered questions • Graceful reload of gunicorn for local development • Still cycling it manually when I make changes to .py files • How hard is it to use a custom buildpack? • https://github.com/bolster/heroku-buildpack-bolster/ commit/ae6dd97b9bdc9db29fd286f76f40d104c48b6a7c • Can we get Wave Accounting running on Heroku? Friday, 16 March, 12
42. Photo Credits Ruby: http://www.flickr.com/photos/vissago/2691363050/ Python: http://www.flickr.com/photos/smb_flickr/5140800350/ Node.js: http://www.flickr.com/photos/spigoo/6501844/ Java: http://www.flickr.com/photos/london/33968122/ Panama: http://www.flickr.com/photos/a-barth/4466781603/ Canada: http://www.flickr.com/photos/raveneye/2238545040/ Friday, 16 March, 12