2. Availability Zone
Security Group
Auto scaling Group

3. Security Group
Production
Availability Zone
Security Group
Staging Availability Zone
Auto scaling Group Auto scaling Group
Security Group Integration Availability Zone
Development
Security Group
Availability Zone
Auto scaling Group
Auto scaling Group

4. Deployment is Hard

5. AWS Elastic Beanstalk

6. Amazon DynamoDB
Application

7. $ curl tnee.us/api/v1/shorten?url=http://aws.amazon.com/
{
"shorturl": "http://tnee.us/eeGdAO"
}
$ curl http://tnee.us/eeGdAO
HTTP/1.0 301 MOVED PERMANENTLY
Content-Type: text/html; charset=utf-8
Content-Length: 251
Location: http://aws.amazon.com/

8. pip installs python packages
virtualenv isolates python packages
git stores revisions of our app
eb manages our deployed application

9. pip installs python packages
$ pip install flask
$ python -c "import flask; print flask"
<module 'flask' from
'/usr/local/lib/python/…/flask/__init__.pyc'>

10. pip installs python packages
$ pip install flask
$ python -c "import flask; print flask"
<module 'flask' from
'/usr/local/lib/python/…/flask/__init__.pyc'>

11. virtualenv isolates python packages
venv1 venv2
./venv1/lib/python ./venv2/lib/python
./venv1/bin/python ./venv2/bin/python

12. virtualenv isolates python packages
$ virtualenv venv1
$ . venv1/bin/activate
$ which python
venv1/bin/python
$ pip install flask
$ python -c "import flask; print flask”
<module 'flask' from
'./venv1/lib/python/.../flask/__init__.pyc'>

13. ├── application.py
├── requirements.txt
├── scripts
│ └── createtable.py
├── shortflask
│ ├── __init__.py
│ ├── views.py
│ ├── config.py
│ ├── db.py
│ └── shortener.py
└── tests

14. application.py
import shortflask
application = shortflask.create_app()
if __name__ == '__main__':
application.run(debug=True)

15. requirements.txt
Flask==0.9
Jinja2==2.6
Werkzeug==0.8.3
boto==2.6.0

16. requirements.txt
Flask==0.9 pip install flask boto
Jinja2==2.6 pip freeze > requirements.txt
Werkzeug==0.8.3
boto==2.6.0

17. shortflask/views.py
@app.route('/api/v1/shorten', methods=['GET'])
def create_shortened_url():
url = request.args['url']
host = request.headers['Host']
try:
shortened = _shorten_url(url)
except Exception, e:
return "Unable to shorten url.", 500
return jsonify({
'shorturl': 'http://%s/%s' % (host, shortened)})

20. What have we NOT done?

21. Current
Apache Sample App
wsgi.conf

22. Current
Apache Sample App
wsgi.conf Our Application

23. Current
Apache Sample App
venv
pip
wsgi.conf Our Application

24. Current
Apache Sample App
venv
pip
generate
wsgi.conf Our Application

25. Apache Sample App
Current
venv
pip
wsgi.conf Our Application

27. One Hour
10 threads 15 urls
10 instances

30. .elasticbeanstalk/optionsettings
[aws:autoscaling:trigger]
MeasureName = CPUUtilization
UpperThreshold = 90
LowerThreshold = 40
Unit = Percent

32. 515,656
135,091
1 Instance 4 Instances with Auto Scaling

35. djangoimg/wsgi.py
import os
os.environ.setdefault(
"DJANGO_SETTINGS_MODULE",
"djangoimg.settings")
from django.core.wsgi import get_wsgi_application
application = get_wsgi_application()

36. djangoimg/settings.py
INSTALLED_APPS = (
...
'south',
'storages',
'easy_thumbnails',
'imgshare',
)

37. djangoimg/settings.py
STATIC_ROOT = os.path.join(
os.path.dirname(
os.path.dirname(
os.path.abspath(__file__))),
'static')
STATIC_URL = '/static/'

38. djangoimg/settings.py
AWS_ACCESS_KEY_ID = os.environ.get('ACCESS_KEY')
AWS_SECRET_ACCESS_KEY = os.environ.get('SECRET_KEY')
DEFAULT_FILE_STORAGE =
'storages.backends.s3boto.S3BotoStorage'
AWS_STORAGE_BUCKET_NAME = 'djangoimg'
MEDIA_URL = ('http://%s.s3.amazonaws.com/' %
AWS_STORAGE_BUCKET_NAME)

40. .ebextensions/python.config
commands:
01_syncdb:
command: "django-admin.py syncdb --noinput"
leader_only: true
02_migrate:
command: "django-admin.py migrate"
leader_only: true
03_collectstatic:
command: "django-admin.py collectstatic --noinput"

41. .ebextensions/python.config
option_settings:
"aws:elasticbeanstalk:container:python:environment":
DJANGO_SETTINGS_MODULE: "djangoimg.settings"
"aws:elasticbeanstalk:container:python":
WSGIPath: "djangoimg/wsgi.py"
"aws:elasticbeanstalk:container:python:staticfiles":
"/static/": "static/"

42. Application
Elastic Beanstalk Envi r onment

43. RDS
Create
Application
Elastic Beanstalk Envi r onment

44. RDS
Authorize
Create
Application
Elastic Beanstalk Envi r onment

45. RDS
Authorize
Create
Application
Elastic Beanstalk Envi r onment
Inject
RDS_DB_NAME
RDS_USERNAME
RDS_PASSWORD
RDS_HOSTNAME
RDS_PORT

46. djangoimg/settings.py
if 'RDS_HOSTNAME' in os.environ:
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': os.environ['RDS_DB_NAME’],
'USER': os.environ['RDS_USERNAME'],
'PASSWORD': os.environ['RDS_PASSWORD'],
'HOST': os.environ['RDS_HOSTNAME'],
'PORT': os.environ['RDS_PORT'],
}
}

50. We are sincerely eager to
hear your feedback on this
presentation and on re:Invent.
Please fill out an evaluation
form when you have a
chance.