Continuous Delivery is the trend process of the moment. It helps companies to deliver their products in a faster and trustful way. Immutable Server is not a new concept. However, thanks to advent of IaaS like AWS, it becomes easier embrace the idea and use its amazing advantages. Mindera tries to adopt these concepts in their projects. It has never been so cool to watch our CD pipeline build and destroy our application’s infrastructure. It's so awesome that we want to share it with you.

1. commitporto.com/2016
CONTINUOUS DELIVERY
PLAYING WITH
IMMUTABLE SERVERS
João Cravo

2. @commitporto2016 @joaogbcravo @minderaswcraft
WHO AM I
- João Cravo
- Software Engineer
- Improving pipelines in the last 4 years
- Chef contributor

3. @commitporto2016 @joaogbcravo @minderaswcraft
WHERE I CAME FROM?

4. @commitporto2016 @joaogbcravo @minderaswcraft
WHERE I CAME FROM?

5. @commitporto2016 @joaogbcravo @minderaswcraft
CONTINUOUS DELIVERY
PLAYING WITH
IMMUTABLE SERVERS

6. @commitporto2016 @joaogbcravo @minderaswcraft
CONTINUOUS
DELIVERY
IMMUTABLE SERVERS

7. @commitporto2016 @joaogbcravo @minderaswcraft
WHAT IS …
CONTINUOUS
DELIVERY?

8. @commitporto2016 @joaogbcravo @minderaswcraft
CONTINUOUS DELIVERY (CD)
https://xebia.github.io/cd-with-docker/#/

9. @commitporto2016 @joaogbcravo @minderaswcraft
CONTINUOUS DELIVERY (CD)
http://software-carpentry.org/blog/2014/04/continuous-publication-requires-continuous-attention.html

10. @commitporto2016 @joaogbcravo @minderaswcraft
WHAT IS …
CONTINUOUS
INTEGRATION?

11. @commitporto2016 @joaogbcravo @minderaswcraft
CONTINUOUS INTEGRATION (CI)

12. @commitporto2016 @joaogbcravo @minderaswcraft
CD VS CONTINUOUS DEPLOYMENT
http://blog.crisp.se/wp-content/uploads/2013/02/continuous-delivery-deployment-sm.jpg

13. @commitporto2016 @joaogbcravo @minderaswcraft
DEVOPS

14. @commitporto2016 @joaogbcravo @minderaswcraft
WHAT IS DEVOPS?
A) A Tool Suite
B) A Job Position
C) A Team

15. @commitporto2016 @joaogbcravo @minderaswcraft
WHAT DEVOPS…
IS NOT

16. @commitporto2016 @joaogbcravo @minderaswcraft
DEVOPS IS NOT… A JOB TITLE
http://www.indeed.com/jobtrends/q-Devops-Engineer.html?relative=1

17. @commitporto2016 @joaogbcravo @minderaswcraft
DEVOPS IS NOT… A JOB TITLE
https://huddlebuy.workable.com/jobs/255850
… OR GOD

18. @commitporto2016 @joaogbcravo @minderaswcraft
DEVOPS IS NOT… A TEAM

19. @commitporto2016 @joaogbcravo @minderaswcraft
DEVOPS IS NOT… A TEAM

20. @commitporto2016 @joaogbcravo @minderaswcraft
DEVOPS IS NOT… USING TOOLS

21. @commitporto2016 @joaogbcravo @minderaswcraft
DEVOPS IS…
A CULTURE
“I LIKE TO DESCRIBE DEVOPS
AS THE CULMINATION OF
THREE AMAZING AND
SIGNIFICANT MOVEMENTS;
THE AGILE INFRASTRUCTURE
THREAD, THE VELOCITY
THREAD, AND THE LEAN
STARTUP THREAD.”
JOHN WILLIS, THE CONVERGENCE OF DEVOPS
“THE NOTION OF DEVOPS IS THE
REALISATION THAT THE
DEVELOPMENT PROCESS DOESN’T
END IN DEVELOPMENT. WE CAN’T
DISCONNECT THE OPERATIONS
PIECE OF SOFTWARE
(DEVELOPMENT) FROM THOSE
OTHER PHASES OF
DEVELOPMENT.”
RYAN BERG (THE CASE FOR DEVOPS)
“A CULTURE THAT AIMS TO BREAK
SILOS BETWEEN DIFFERENT TEAMS
IN AN IT ORGANISATION,
IMPROVING IN THIS WAY, THE
DELIVERY, QUALITY AND SUPPORT
OF THE SOFTWARE.”
JOÃO CRAVO, COMMITPORTO

22. @commitporto2016 @joaogbcravo @minderaswcraft

23. @commitporto2016 @joaogbcravo @minderaswcraft
WHAT IS …
AN IMMUTABLE
SERVER?

24. @commitporto2016 @joaogbcravo @minderaswcraft
MUTABLE SERVER
Subject to:
- manual changes
- automatic changes
- OS updates
- product updates

25. @commitporto2016 @joaogbcravo @minderaswcraft
CONFIGURATION MANAGEMENT TOOLS

26. @commitporto2016 @joaogbcravo @minderaswcraft
IMMUTABLE SERVER
- no changes
- no human access
- reproducible
- destroyable

27. @commitporto2016 @joaogbcravo @minderaswcraft
IMMUTABLE SERVER

28. @commitporto2016 @joaogbcravo @minderaswcraft
IMMUTABLE SERVER

29. @commitporto2016 @joaogbcravo @minderaswcraft

30. @commitporto2016 @joaogbcravo @minderaswcraft
CONTINUOUS DELIVERY
PLAYING WITH
IMMUTABLE SERVERS

31. @commitporto2016 @joaogbcravo @minderaswcraft
CD: PLAYING WITH IMMUTABLE SERVERS
- Build (aka CI)
- Create product image
- QA: Build a new immutable cluster
- Production: Build a new immutable cluster

32. @commitporto2016 @joaogbcravo @minderaswcraft
BUILD (AKA CI)
- Compile
- Tests (unit, integration, code style, etc)
- …
- Package
- Upload

33. @commitporto2016 @joaogbcravo @minderaswcraft
BUILD (AKA CI)

34. @commitporto2016 @joaogbcravo @minderaswcraft
CREATE PRODUCT IMAGE

35. @commitporto2016 @joaogbcravo @minderaswcraft
QA: BUILD A NEW IMMUTABLE CLUSTER

36. @commitporto2016 @joaogbcravo @minderaswcraft
PRODUCTION: BUILD A NEW IMMUTABLE CLUSTER

37. @commitporto2016 @joaogbcravo @minderaswcraft
CD: PLAYING WITH IMMUTABLE SERVERS

38. @commitporto2016 @joaogbcravo @minderaswcraft
ROLLBACK
205
200

39. @commitporto2016 @joaogbcravo @minderaswcraft
FLICK DNS

40. @commitporto2016 @joaogbcravo @minderaswcraft
PROS VS CONS

41. @commitporto2016 @joaogbcravo @minderaswcraft
PROBLEM 1 - IMAGE CREATING TIME

42. @commitporto2016 @joaogbcravo @minderaswcraft
PROBLEM 2 - ENVIRONMENT CONFIGURATION
- Database and other service connections
- Passwords
- Certificates
- Application settings
- …

43. @commitporto2016 @joaogbcravo @minderaswcraft
PROBLEM 3 - NO SSH TO MACHINES
- Debug ?
- Production hot fix ?
- Clean up space! Logs are using all the
space!
- …

44. @commitporto2016 @joaogbcravo @minderaswcraft
ADVANTAGE 1 - NO SSH TO MACHINES
Wasn’t this a problem?

45. @commitporto2016 @joaogbcravo @minderaswcraft
ADVANTAGE 1 - NO SSH TO MACHINES
- Security
- No“hammer time”

46. @commitporto2016 @joaogbcravo @minderaswcraft
ADVANTAGE 2 - CENTRALISED MONITORING
- Metrics
- Logs
http://statful.com/

47. @commitporto2016 @joaogbcravo @minderaswcraft
ADVANTAGE 3 - PIPELINES PARALLELISATION

48. @commitporto2016 @joaogbcravo @minderaswcraft
ADVANTAGE 3 - PIPELINES PARALLELISATION

49. @commitporto2016 @joaogbcravo @minderaswcraft
ADVANTAGE 4 - AUTO SCALING
- Protection against load
- Costs

50. @commitporto2016 @joaogbcravo @minderaswcraft
MORE ADVANTAGES ….
- Easy and fast rollback
- Provision once (image creation)
- Automatic recover

51. @commitporto2016 @joaogbcravo @minderaswcraft
SUMMARY
- Immutable Servers are just around to the corner
- Using immutable servers brings amazing advantages
- Embrace the agile, embrace the CI/CD processes
- Meet operations! There is a magic world outside your IDE

52. @commitporto2016 @joaogbcravo @minderaswcraft
THANKS!
joaogbcravo @ gmail.com
joaogbcravo