Bottle is a small microframework that lets you build simple python webapps in a few minutes. This talk will explain how to build simple webapp from scratch and configure your system to deploy many other apps concurrently with a rock solid and scalable setup.

2. What is nginx
 HTTP and reverse proxy server
 Event driven
 Very fast
 Easy to configure

3. What is uWSGI
 WSGI compatible server
 VERY flexible
 Little overhead
 Compatible with many frameworks like: bottle, flask,
django, …

4. What is bottle
 Bottle is a fast, simple and lightweight WSGI web
microframework
 No additional dependencies
 Uses decorators: @route, @get, @post, etc…

5. Bottle Hello World
 mkdir –p /opt/uwsgiApps/apps/
 cd /opt/uwsgiApps/apps/
 virtualenv bottle-hello
 cd bottle-hello
 pip install bottle

6. Bottle Hello World
 vi bottle-hello.py:
from bottle import route, run
@route('/hello')
def hello():
return "Hello World!"
if __name__ == '__main__':
run(port=8080, debug=True)
else:
application = app

7. Bottle Hello World
 python bottle-hello.py
 Try to access http://localhost:8080/

8. Bottle Hello World v2
 Add this (after the initial imports) to bottle-hello.py:
from bottle import template
@route('/hello/<name>')
def greet(name='Stranger'):
return template('Hello {{name}}, how are you?', name=name)
 python bottle-hello.py
 Try to access http://localhost:8080/hello/yourname

9. uWSGI installation
 pip install uwsgi
 vi /etc/init/uwsgi.conf:
# uWSGI - manage uWSGI application server
description "uWSGI Emperor"
start on (filesystem and net-device-up IFACE=lo)
stop on runlevel [!2345]
respawn
env LOGTO=/var/log/uwsgi/uwsgi.log
env BINPATH=/usr/local/bin/uwsgi
exec $BINPATH --emperor /opt/uwsgiApps/conf.d/ --logto $LOGTO

10. uWSGI emperor
 One of many uWSGI configuration options
 One master process
 Many independent child processes
 Each application has a config file
 Touch or modify the config file to restart the
application

11. uWSGI example config
 vi /opt/uwsgiapps/conf.d/bottle-hello.xml:
<uwsgi>
<master>true</master>
<processes>1</processes>
<vaccum>true</vaccum>
<chmod-socket>600</chmod-socket>
<socket>/tmp/%n.sock</socket>
<uid>www-data</uid>
<gid>www-data</gid>
<pythonpath>/opt/uwsgiApps/apps/%n/src/</pythonpath>
<module>scatterapp</module>
</uwsgi>

12. nginx configuration
 vi /etc/nginx/conf.d/subdomain1.domain.com.conf:
server {
listen 80;
server_name subdomain1.domain.com.conf;
location / {
include uwsgi_params;
uwsgi_pass unix://tmp/bottle-example.py;
}
}

13. System overview

nginx acts as a reverse proxy

nginx redirects the requests based on the domain name or any other
parameter (ip address, url path, cookies, etc)

uWSGI starts and stops the applications

bottle is used to program the application

14. Questions

15. Links
 http://nginx.org/
 http://uwsgi-docs.readthedocs.org/
 http://bottlepy.org/