Internals of OpenRuko PaaS (Platform as a Service), an open source Heroku clone implementation. Agenda: - Cloud definitions - Inception (from what ideas PaaS came from?) - Distributed System Architecture - Philosophies (Ephemeralization and Unix Process Model) - The twelve-factor app

1. Platform
as a
Service
Roger Leite

2. About Me
@rogerleite
1up4dev.org
rogerleite

3. About Me
Commiter of some projects like
* Openruko (link)
* HTTPI (link)
* HttpMonkey (link)
Slides based on my
experience with OpenRuko

4. Disclaimer

5. Cloud
Definitions
* as a Service

6. Cloud “classic” Pyramid
IaaS
PaaS
SaaS

7. CloudIaas
Infrastructure
as a Service

8. CloudPaas
Platform
as a Service

9. CloudSaas
Software
as a Service

11. Outsource
headache
the

12. Bynary assets
aren' hard ...
Storing metrics
and rendering
graphs ...

13. Scale
everything is
easy ...
until you need

14. No Bullet!Silver
Silver bullet
you say?

15. Inside with love
Heroku

16. Reality
$ git push
# open The Doors
# provision
# deploy
# check if is not on Limbo
$ open http...
on your terminal

17. Dreamlvl1
* check user keys
* handle git stream
* Api Server will provision
and deploy
* output all logs
open The Doors

18. Dreamlvl2
* start a build container
* identify buildpack
* on Ruby buildpack
** bundle install
** generates a Foreman file if necessary
** set env vars
* on success, release
provision ...

19. Dreamlvl3
* start a base container
* download the new slug
* start worker via
Foreman
* notify http routing
about the new route
deploy ...

20. Openruko - overview

21. git push

22. provision

23. deploy

24. Openruko - overview

25. Limbo
on
failure
goes
to

26. Logs!
your only
chance to
escape
from Limbo
are

27. Philosophies
* Unix Process Model to
Web Apps
* Ephemeralization
* Twelve-Factor App

28. Unix Process Model
to web apps
Process types
vs
Processes
http://adam.heroku.
com/past/2011/5/9/applying_the_unix_process_model_to_web_apps

29. Ephemeralization
"The ability of technological
advancement to do 'more and
more with less and less until
eventually you can do everything
with nothing'" by Wiki
http://adam.heroku.com/past/2011/4/7/ephemera

30. Twelve-factor app
Methodology for building software-
as-a-service apps
* Dependencies
* Config
* Backing Services
Even if is not your case, is a great
read!
http://12factor.net/

31. Mentions!
Cloud computing
http://en.wikipedia.org/wiki/Cloud_computing
How Heroku Works
https://devcenter.heroku.com/articles/how-heroku-works
Openruko
https://github.com/openruko
The twelve factor apps and openruko
http://www.slideshare.net/nuxlli/the-twelve-factor-apps-and-openruko
Applying the unix process model to web apps
http://adam.heroku.
com/past/2011/5/9/applying_the_unix_process_model_to_web_apps/
Ephemeralization
http://adam.heroku.com/past/2011/4/7/ephemeralization/
Cloud Services by Adam Wiggins http://www.slideshare.net/adamwiggins/cloud-
services?from=ss_embed
The Twelve-Factor App http://12factor.net/
kirby Ferguson: Embrace the remix http://www.ted.
com/talks/kirby_ferguson_embrace_the_remix.html

32. Obrigado!
(thank you!)
@rogerleite
1up4dev.org
rogerleite

33. we’re hiring!
desenvolvimento@akatus.com