Steuermann an Bord - Kubernetes Hands-On

Transcript

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

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2. 2 . 1
   EINFÜHRUNG
   

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

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4. 2 . 3
   Agenda
   Wann? Was?
   09:00 Einführung
   Docker
   Kubernetes
   10:15 Kaffeepause
   10:45 Lab 1: kubectl
   12:45 Mittagessen
   

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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
   

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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
    

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11. 3 . 3
    

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12. 3 . 4
    

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13. 3 . 5
    

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

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17. "Kubernetes is an open-source platform for automating
    deployment, scaling, and operations of application
    containers across clusters of hosts, providing container-
    centric infrastructure."
    

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18. 4 . 2
    portable: public, private, hybrid, multi-cloud
    extensible: modular, pluggable, hookable, composable
    self-healing: auto-placement, auto-restart, auto-
    replication, auto-scaling
    

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19. 4 . 3
    

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

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21. 4 . 6
    Pods
    

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22. 4 . 7
    Replication Controller
    
    P P
    P
    

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

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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:
    

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25. 4 . 9
    4 . 10
    Services
    

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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
    

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

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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
    

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33. 6 . 3
    Unser Potentieller Investor
    

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34. 7 . 1
    LAB 1: KUBECTL
    

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

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37. 9 . 1
    HELM
    

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38. 9 . 2
    Paket Manager
    Installation von komplexen Applikationen
    Repositories mit Kubernetes Artefakten
    Reproduzierbare Releases inklusive
    Rollback
    

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

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40. 9 . 4
    Konzept
    Installationsbeschreibung durch YAML-Templates
    Eigene Versionierung der Paketierung
    Bei Installation/Upgrade Ersetzung durch Standard oder
    vorgegebene Werte
    History von Deployments
    

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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
    

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42. 10 . 1
    LAB 2: HELM
    

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44. 11 . 1
    Wir brauchen mehr Entwicker
    

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45. 11 . 2
    

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46. 12 . 1
    DEIS WORKFLOW
    

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47. 12 . 2
    Twelve-Factor Applications
    

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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
    

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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
    

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52. 12 . 7
    Struktur einer Deis Applikation
    

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53. 12 . 8
    Workflow
    

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54. 13 . 1
    LAB 3: DEIS
    WORKFLOW
    

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55. 14 . 1
    ENDE
    

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56. 14 . 2
    Cluster aufbauen
    minikube
    kops
    Tectonic
    

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

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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
    

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59. 14 . 5
    The End
    @NicolasByl
    Copyright 2017
    

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