Steuermann an Bord - Kubernetes Hands-On

Transcript

1. 1 STEUERMANN AN BORD – KUBERNETES HANDS-ON JavaLand, 30.03.2016 Nicolas

   Byl, codecentric AG

2. 2 . 1 EINFÜHRUNG

3. 2 . 2 Nicolas Byl Senior IT Consultant https://github.com/nbyl https://twitter.com/NicolasByl

4. 2 . 3 Agenda Wann? Was? 09:00 Einführung Docker Kubernetes

   10:15 Kaffeepause 10:45 Lab 1: kubectl 12:45 Mittagessen

5. 2 . 4 Agenda (2) Wann? Was? 13:30 Helm Lab

   2: Helm Charts 14:30 Kaffeepause 15:00 Deis Workflow Lab 3: Deis Workflow Wrap-Up 16:30 Ende

6. 2 . 5 Mission Statement Es gibt keine dummen Fragen!

   Hilfe zur Selbsthilfe
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8. 2 . 6 3 . 1 DOCKER

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10. 3 . 2

11. 3 . 3

12. 3 . 4

13. 3 . 5

14. 3 . 6 3 . 7 Dockerfile FROM java:8 MAINTAINER

    Marcel Birkner <marcel.birkner@codecentric.de> ADD target/edmp-sample-app*.jar app.jar RUN bash -c 'touch /app.jar' ENTRYPOINT ["java","-jar","/app.jar"]}
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16. 3 . 8 4 . 1 KUBERNETES

17. "Kubernetes is an open-source platform for automating deployment, scaling, and

    operations of application containers across clusters of hosts, providing container- centric infrastructure."

18. 4 . 2 portable: public, private, hybrid, multi-cloud extensible: modular,

    pluggable, hookable, composable self-healing: auto-placement, auto-restart, auto- replication, auto-scaling

19. 4 . 3

20. 4 . 4 4 . 5 Pods & Co.

21. 4 . 6 Pods

22. 4 . 7 Replication Controller  P P P

23. 4 . 8 Deployment Kombination aus Pod und Replication Controller

    Einheit

24. apiVersion: extensions/v1beta1 kind: Deployment metadata: name: frontend spec: replicas: 3

    template: metadata: labels: app: guestbook tier: frontend spec: containers: - name: php-redis image: gcr.io/google-samples/gb-frontend:v4 resources: requests:

25. 4 . 9 4 . 10 Services

26. 4 . 11 Endpunkt für eine Menge von Pods einen

    externen Endpunkt Auflösung über DNS Umgebungsvariablen
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28. 4 . 12 5 . 1 LAB 0: SETUP

29. 5 . 2 Vorraussetzungen kubectl helm deis https://goo.gl/3YDCIe

30. 5 . 3 Konfiguration Teams bilden Clustername: teamX.kubeland.cc Konfigurationsdatei nach

    $HOME/.kube/config kubectl cluster-info
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32. 6 . 1 6 . 2 Business Model Real-Time Statistics

    as a Service

33. 6 . 3 Unser Potentieller Investor

34. 7 . 1 LAB 1: KUBECTL

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36. 8 . 1 8 . 2 Lasst und die Kunden

    jagen

37. 9 . 1 HELM

38. 9 . 2 Paket Manager Installation von komplexen Applikationen Repositories

    mit Kubernetes Artefakten Reproduzierbare Releases inklusive Rollback

39. 9 . 3 Architektur Server: tiller Client: helm CLI

40. 9 . 4 Konzept Installationsbeschreibung durch YAML-Templates Eigene Versionierung der

    Paketierung Bei Installation/Upgrade Ersetzung durch Standard oder vorgegebene Werte History von Deployments

41. 9 . 5 Beispiel helm init helm search redis [...]

    helm install stable/redis [...] helm install working-tiger stable/redis --set "image.version=3.2.8-r2" helm rollback working-tiger

42. 10 . 1 LAB 2: HELM

43. None

44. 11 . 1 Wir brauchen mehr Entwicker

45. 11 . 2

46. 12 . 1 DEIS WORKFLOW

47. 12 . 2 Twelve-Factor Applications

48. 12 . 3 Codebase One codebase tracked in revision control,

    many deploys Dependencies Explicitly declare and isolate dependencies Config Store config in the environment Backing Services Treat backing services as attached resources Build, release, run Strictly separate build and run stages Processes Execute the app as one or more stateless processes

49. 12 . 4 Port binding Export services via port binding

    Concurrency Scale out via the process model Disposability Maximize robustness with fast startup and graceful shutdown Dev/prod parity Keep development, staging, and production as similar as possible Logs Treat logs as event streams Admin processes Run admin/management tasks as one-off processes
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51. 12 . 5 12 . 6 Architektur

52. 12 . 7 Struktur einer Deis Applikation

53. 12 . 8 Workflow

54. 13 . 1 LAB 3: DEIS WORKFLOW

55. 14 . 1 ENDE

56. 14 . 2 Cluster aufbauen minikube kops Tectonic

57. 14 . 3 Ausblick 1.6+ RBAC Federation Dynamic Storage Provisioning

58. 14 . 4 Links https://kubernetes.io https://helm.sh https://deis.com https://www.cncf.io https://www.openshift.com/promotions/kubernetes.html https://github.com/ramitsurana/awesome-kubernetes

59. 14 . 5 The End @NicolasByl Copyright 2017