Django + Heroku

A brief talk on why Heroku is a better choice for my agency than whatever weird EC2, Linode, Rackspace-Server-thing.

Transcript

1. DJANGO + HEROKU OR HOW TO BE SMART ABOUT BEING STUPID
2. THIS IS MESS FOUNDED IN 2007 4 DESIGNERS + 4 DEVELOPERS WEB, MOBILE, SOCIAL, DESKTOP, IOS, ANDROID 1.25 ADMINS (ME + DAN) 64.2% DJANGO 4 SITES A MONTH WAY MORE IN “MAINTENANCE” http://www.thisismess.com
3. I DO NOT WORK FOR HEROKU …and kinda hate their support guys. I OWN MESS.
4. WHAT WE NEED …besides money and Scotch
5. SERVERS SHOULD BE SAME(ish) PREDICTABLE TO SCALE WITH CHEAP TO DEVELOP WITH EASY(ish) TO ADMINISTER RELIABLE(ish) FLEXIBLE(ish) BILLABLE!
6. DEPLOYMENT MUST BE THE SAME ACROSS AS MANY PROJECTS AS POSSIBLE DOCUMENTED N00B-PROOF’D FORGIVING
7. WHAT WE’VE TRIED …and decided sucks
8. 1 IN HOUSE
9. 1996 CALLED AND IT HATES YOU …BUT IT’S CHEAP …AND PREDICTABLE! …AND FLEXIBLE! …AND ABSOLUTELY NOTHING ELSE
10. 1 CO-LOCATED AT RACKSPACE
11. 2002 ISN’T MUCH HAPPIER …BUT IT’S CHEAP …AND PREDICTABLE! …AND FLEXIBLE! …AND (more) RELIABLE! …AND ABSOLUTELY NOTHING ELSE
12. (n) VPS (es?) AT RACKSPACE USING FABRIC AND RELEASES AND SFTP AND NEW RELIC AND SENTRY AND GIT AND PUPPETMASTER
13. LIVING THE DREAM …CHEAP(ish) …AND PREDICTABLE! …AND FLEXIBLE! …AND RELIABLE! …AND (sort of) STANDARDIZED! …AND BILLABLE!
14. IF YOUR DREAM IS… PAINFUL TO SETUP …AND UPDATE …AND SECURE …AND SCALE …AND TRAIN ON …AND CHANGE …AND BILL …AND TRANSFER
15. AND BEFORE YOU ASK… AWS IS AWESOME …BUT IT SUCKS …AND EC2 IS GREAT
16. SO, HEROKU. …it sucks less
17. (h)+
18. HEROKU (and S3 and EC2 and RACKSPACE) 100% STANDARD (unless it’s non-standard) BILLABLE N00B PROOF RELIABLE(ish) FLEXIBLE(ish) DOCUMENTED ADMINISTRATABLE (because you don’t) CHEAPER THAN CHEAP. FREE!
19. AND YEAH IT’S JUST EC2 …UNTIL YOU NEED BULLSHIT …BUT IT HIDES THE BULLSHIT
20. WHY NOT HEROKU …everything sucks in its own way
21. IT’S KINDA, WELL…DUMB IT’S JUST EC2 …AND WITHOUT IT …SO IT GOES DOWN WITH EC2 …AND YOU CAN’T DO NATIVE WEBSOCKETS …AND IT GETS PRICEY …AND MYSQL SUCKS ON IT (so?) …AND UWSGI HAS PROBLEMS …AND THERE’S NO PERMANENT STORAGE …AND IT USES MICROS ON EC2 …AND LOGGING IS…LESS THAN AWESOME …AND PSQL IS KINDA SLOW …AND THEIR SUPPORT SUCKS …AND YOU DEPLOY WITH GIT turns out they use linux containers or something.
22. MAKE IT SUCK LESS …as best you can
23. 1. GET GOING DOWNLOAD THE TOOLBELT INSTALL BREW https://toolbelt.heroku.com http://mxcl.github.com/homebrew/ INSTALL GIT brew install git; CREATE AN ACCOUNT https://heroku.com INSTALL VIRTUALENV sudo easy_install virtualenv; INSTALL PIP sudo easy_install pip; INSTALL PSQL http://postgresapp.com GENERATE SSH IDENTITY http://google.com ADD PUBLIC KEY TO HEROKU https://dashboard.heroku.com/account
24. 2. MAKE AN APP DO THE VENV INSTALL THINGS INTO THE VENV START A PROJECT mkdir heroku-app; cd heroku-app; git init; virtualenv .env --distribute; source .env/bin/activate; pip install Django psycopg2 dj-database-url; pip install boto django-storages South; DJANGO! DJANGO! django-admin.py startproject herokuapp .
25. 3. PREPARE SPEC REQS SETUP PSQL SETTINGS.PY import dj_database_url DATABASES['default'] = dj_database_url.config(default='postgres://foo@localhost/heroku') RUNSERVER python manage.py runserver; pip freeze > requirements.txt createdb -h localhost heroku; GUNICORN (they refuse to support UWSGI correctly) pip install gunicorn; “web: gunicorn herokuapp.wsgi” >> Profile .gitignore *.pyc .env .DS_Store local_settings.py
26. 4. GIT IT? git init; git add .; git commit -a -m “I love squirrels.”; INIT & COMMIT
27. 5. HEROKUEN! heroku create; heroku addons:add heroku-postgresql:dev git push heroku master; heroku run python manage.py syncdb; heroku open; APPIFY
28. IT WORKS! …but here be dragons (and not the fluffy ones)
29. THERE IS NO DOWNTIME FIX …99.99999999999999 UPTIME IS NOT POSSIBLE …IT’S PROBABLY OK.
30. IT’S FREE TO DEVELOP WITH 100% FREE DURING DEV/STAGING (PRODUCTION!) INSTANCES SPIN DOWN! CRON A CURL http://google.com
31. STOP USING MYSQL …IT’S AWFUL. (heroku addons:add cleardb:ignite) …SERIOUSLY. IT’S AWFUL.
32. WEBSOCKETS, WEBSPROCKETS …IT’S NGINX’S FAULT (heroku addons:add pusher:sandbox) SOCKET.IO + TORNADO JUST USE EC2
33. UWSGI IS WAY BETTER THAN GUNICORN USE PYTHON 2.7.2 pip install uwsgi; pip freeze > requirements.txt; “python-2.7.2” >> runtime.txt “web: uwsgi --http-socket :$PORT --wsgi-file wsgi.py” >> Profile
34. STORING FILES? USE FILE STORAGES. S3 IS BUILT FOR THIS pip install boto django-storages; pip freeze > requirements.txt; CUSTOM STORAGES (utils.py) from storages.backends.s3boto import S3BotoStorage class StaticRootS3BotoStorage(S3BotoStorage): def __init__(self, *args, **kwargs): super(StaticRootS3BotoStorage, self).__init__(*args, **kwargs) self.location = 'static' class MediaRootS3BotoStorage(S3BotoStorage): def __init__(self, *args, **kwargs): super(MediaRootS3BotoStorage, self).__init__(*args, **kwargs) self.location = 'uploads' #### ASSETS URLS #### BASE_URL = '//bucket-name.s3.amazonaws.com/' STATIC_URL = '%sstatic/' % BASE_URL MEDIA_URL = '%suploads/' % BASE_URL #### Amazon AWS / Storage AWS_ACCESS_KEY_ID = "AKXXXXX" AWS_SECRET_ACCESS_KEY = "HZZXXX/XXXX" AWS_STORAGE_BUCKET_NAME = 'bucket-name' #### File Storage DEFAULT_FILE_STORAGE = 'herokuapp.utils.MediaRootS3BotoStorage' STATICFILES_STORAGE = 'herokuapp.StaticRootS3BotoStorage' SETTINGS.PY
35. MICROS ARE FINE IF YOU NEED MORE PERFORMANCE heroku ps:scale web=2; WHATEVER WEIRD CONTAINER THING THEY USE
36. http://getsentry.com/ YOU’RE A LOG WHY AREN’T YOU USING SENTRY? INSTALL RAVEN pip install raven; pip freeze > requirements.txt; SETTINGS.PY # Set your DSN value SENTRY_DSN = 'https://XXXXX:XXXXX@app.getsentry.com/1111' # Add raven to the list of installed apps INSTALLED_APPS = INSTALLED_APPS + ( # ... 'raven.contrib.django.raven_compat', )
37. PSQL? EC2! MAKE A HIGH-MEMORY INSTANCE ON EC2 http://google.com SET DATABASE_URL ENV heroku config:set DATABASE_URL=postgres://xxx.aws.com:xxx/xxxx THIS WORKS FOR ANYTHING HEROKU’S PSQL IS ACTUALLY PRETTY GREAT
38. EMBRACE GIT DEPLOYS USE PROCFILE FOR STUFF “web: python manage.py collectstatic --noinput; uwsgi --http- socket :$PORT --wsgi-file wsgi.py” >> Profile
39. THEIR SUPPORT SUCKS BUT AT LEAST THEY HAVE SOME.
40. THANK YOU JACK SHEDD | INTERACTIVE DIRECTOR jshedd@thisismess.com http://www.thisismess.com
41. QUESTIONS? …warning, I tend to ramble.