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Abstractions – Pittsburgh – The Twelve-Factor C...

Casey West
August 19, 2016

Abstractions – Pittsburgh – The Twelve-Factor Container + BONUS

My talk for Abstractions, with bonus material.

Casey West

August 19, 2016
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  1. 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. The Twelve-Factor Container • Twitter @caseywest • Email [email protected]

    Web http://caseywest.com 3 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  3. This isn't really a talk about containers 5 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  4. This is a talk about operational maturity 6 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  5. You must be this tall to ride this ride 7

    ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  6. Audience Participation • Containers? • Schedulers? • Cloud? 8 !

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

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  8. 1: One codebase tracked in revision control, many deploys 11

    ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  9. Anti-pattern Building separate images for staging and production 12 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  10. Best Practice Use the environment and/or feature flags 14 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  11. Best Practice Declare version numbers of upstream dependencies 18 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  12. Best Practice Depend on base images for default filesystem and

    runtimes 19 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  13. Best Practice This one is literally about environment variables 24

    ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  14. Best Practice This one is literally about environment variables !

    ‑ 25 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  15. 4: Treat backing services as attached resources 26 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  16. Best Practice Connect to network- attached services using connection info

    from the environment 30 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  17. 5: Strictly separate build and run stages 31 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  18. Best Practice Build immutable images then run those images 33

    ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  19. 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
  20. Best Practice Respect the lifecycle: buid, run, destroy 35 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  21. 6: Execute the app as one or more stateless processes

    36 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  22. Best Practice Schedule LRPs by distributing them across a cluster

    of physical hardware 37 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  23. Best Practice private String getPort() { Map<String, String> env =

    System.getenv(); return env.get("PORT"); } 43 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  24. 8: Scale out via the process model 45 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  25. Best Practice Horizontally scale by adding instances 46 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  26. 9: Maximize robustness with fast startup and graceful shutdown 47

    ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  27. 10: Keep development, staging, and production as similar as possible

    48 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  28. Anti-pattern Random log files #yolo'd all over the file system

    51 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  29. 12: Run admin/ management tasks as one-off processes 53 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  30. Best Practice Reuse application images with specific entrypoints for tasks

    55 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  31. More factors? • API first • Secrets management • Health

    metrics • Global distribution 56 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  32. The five stages of cloud- native 1. Denial 2. Anger

    3. Bargaining 4. Depression 5. Acceptance 60 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  33. Have a seat on the couch 61 ! @caseywest #abstractions

    #containers #realworld #sorrynotsorry
  34. Rules We will talk about your delivery pipeline 64 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  35. Rules We will talk about your architecture 65 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  36. Rules We will talk about your automation 66 ! @caseywest

    #abstractions #containers #realworld #sorrynotsorry
  37. "Deploying my apps to 'the cloud' is paintful. Why?" 68

    ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  38. Denial Containers are just like tiny virtual machines 70 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  39. Denial We don't need to automate continuous delivery 71 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  40. Anger Dev is just #YOLO-ing shit to production 74 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  41. Bargaining We crammed this monolith into a container and called

    it a microservice 76 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  42. Bargaining What if we create "microservices" that all talk to

    the same data source? 78 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  43. Depression We made 200 microservices and forgot to set up

    jenkins 80 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  44. Depression We have an automated build pipeline but release twice

    a year 81 ! @caseywest #abstractions #containers #realworld #sorrynotsorry
  45. Acceptance Small batch size works for replatforming, too 86 !

    @caseywest #abstractions #containers #realworld #sorrynotsorry
  46. Operability is 1. Microservices Architecture 2. Devops Culture 3. Continuous

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