Abstractions – Pittsburgh – The Twelve-Factor Container + BONUS

1ed0b822068d34032bca7d2beeb2f846?s=47 Casey West
August 19, 2016

Abstractions – Pittsburgh – The Twelve-Factor Container + BONUS

My talk for Abstractions, with bonus material.

1ed0b822068d34032bca7d2beeb2f846?s=128

Casey West

August 19, 2016
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Transcript

  1. 2.

    A word about consent… Please do: Take pictures, tweet, take

    notes. Please don't: Record or live stream without my explicit consent. 2 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  2. 3.

    The Twelve-Factor Container • Twitter @caseywest • Email casey@geeknest.com •

    Web http://caseywest.com 3 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  3. 5.

    This isn't really a talk about containers 5 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  4. 6.

    This is a talk about operational maturity 6 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  5. 7.

    You must be this tall to ride this ride 7

    ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  6. 8.

    Audience Participation • Containers? • Schedulers? • Cloud? 8 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  7. 9.

    Docker Docker Docker Docker Docker Docker Docker Docker 9 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  8. 11.

    1: One codebase tracked in revision control, many deploys 11

    ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  9. 12.

    Anti-pattern Building separate images for staging and production 12 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  10. 13.
  11. 14.

    Best Practice Use the environment and/or feature flags 14 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  12. 18.

    Best Practice Declare version numbers of upstream dependencies 18 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  13. 19.

    Best Practice Depend on base images for default filesystem and

    runtimes 19 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  14. 20.
  15. 24.

    Best Practice This one is literally about environment variables 24

    ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  16. 25.

    Best Practice This one is literally about environment variables !

    ‑ 25 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  17. 26.

    4: Treat backing services as attached resources 26 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  18. 30.

    Best Practice Connect to network- attached services using connection info

    from the environment 30 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  19. 31.

    5: Strictly separate build and run stages 31 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  20. 33.

    Best Practice Build immutable images then run those images 33

    ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  21. 34.

    Painfully Obvious Best Practices 1. Eat when hungry 2. Sleep

    when tired 3. Book Casey West for speaking gigs 34 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  22. 35.

    Best Practice Respect the lifecycle: buid, run, destroy 35 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  23. 36.

    6: Execute the app as one or more stateless processes

    36 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  24. 37.

    Best Practice Schedule LRPs by distributing them across a cluster

    of physical hardware 37 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  25. 39.
  26. 40.
  27. 42.
  28. 43.

    Best Practice private String getPort() { Map<String, String> env =

    System.getenv(); return env.get("PORT"); } 43 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  29. 45.

    8: Scale out via the process model 45 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  30. 46.

    Best Practice Horizontally scale by adding instances 46 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  31. 47.

    9: Maximize robustness with fast startup and graceful shutdown 47

    ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  32. 48.

    10: Keep development, staging, and production as similar as possible

    48 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  33. 50.
  34. 51.

    Anti-pattern Random log files #yolo'd all over the file system

    51 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  35. 53.

    12: Run admin/ management tasks as one-off processes 53 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  36. 55.

    Best Practice Reuse application images with specific entrypoints for tasks

    55 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  37. 56.

    More factors? • API first • Secrets management • Health

    metrics • Global distribution 56 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  38. 60.

    The five stages of cloud- native 1. Denial 2. Anger

    3. Bargaining 4. Depression 5. Acceptance 60 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  39. 61.

    Have a seat on the couch 61 ! @caseywest #abstractions

    #containers #realworld #sorrynotsorry
  40. 63.
  41. 64.

    Rules We will talk about your delivery pipeline 64 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  42. 65.

    Rules We will talk about your architecture 65 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  43. 66.

    Rules We will talk about your automation 66 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  44. 68.

    "Deploying my apps to 'the cloud' is paintful. Why?" 68

    ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  45. 70.

    Denial Containers are just like tiny virtual machines 70 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  46. 71.

    Denial We don't need to automate continuous delivery 71 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  47. 74.

    Anger Dev is just #YOLO-ing shit to production 74 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  48. 76.

    Bargaining We crammed this monolith into a container and called

    it a microservice 76 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  49. 78.

    Bargaining What if we create "microservices" that all talk to

    the same data source? 78 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  50. 80.

    Depression We made 200 microservices and forgot to set up

    jenkins 80 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  51. 81.

    Depression We have an automated build pipeline but release twice

    a year 81 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  52. 86.

    Acceptance Small batch size works for replatforming, too 86 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  53. 90.

    Operability is 1. Microservices Architecture 2. Devops Culture 3. Continuous

    Delivery Pick Three 90 ! @caseywest #abstractions #containers #realworld #sorrynotsorry