Kubernetes 101 Google IO Talk

What is Kubernetes 101?
How do I manage application at scale? That’s a common question facing developers today and this code lab helps to make sense of the ever changing scalable app landscape. We'll use Docker and Kubernetes to deploy, scale, and manage a microservices based application in this talk.

Transcript

1. Best Practices for
   Orchestrating the Cloud with
   Kubernetes
   Carter Morgan
   @_askcarter
   

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2. Photo © Annette Shaff via Canva.com
   #K8story
   

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3. monolith
   nginx
   hello
   nginx
   Microservices
   Monolith
   auth
   

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4. Use Containers
   Photo © ptnimages via Canva.com
   Best
   Practice
   

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5. Container Demo
   

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6. But that’s just one machine
   Discovery
   Scaling Security
   Monitoring Configuration
   Scheduling
   Health
   

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7. Automate and Monitor
   Photo © 3Dalia via Canva.com
   Best
   Practice
   

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8. Avoid Vendor Lock-in
   Photo © Michele Piacquadio via Canva.com
   Best
   Practice
   

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9. Kubernetes
   Open Source Container
   Automation Framework
   • Open API
   • Based on Google’s
   experiences
   

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10. Velocity
    1.0
    1.1
    1.2
    v1.2:
    - 5k commits
    - +50%
    unique
    contributors
    Source:
    http://github.com/kubernetes/kubernetes
    

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11. 1.2
    • Deployments
    • DaemonSets
    • New UI
    • Simplified Deployments
    • Automated Cluster
    Management
    • Improved Scale
    1.3
    • Legacy application support
    • Cluster Federation
    • More nodes
    • In-cluster IAM
    • Scheduled jobs
    • Cluster autoscaling
    • Public cloud dashboard
    

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12. Community
    Companies
    Contributing
    Companies
    Using
    1200+ external
    projects based
    on k8s
    800+ unique
    contributors
    Top 0.01% of all
    Github projects
    

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13. Kubernetes Quick Demo
    

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14. Pods
    Logical Application
    • One or more containers
    and volumes
    • Shared namespaces
    • One IP per pod Pod
    nginx
    monolith
    NFS
    iSCSI
    GCE
    10.1.0.100
    

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15. Labels
    Arbitrary metadata
    attached to any API object
    • Queryable by Selectors
    • How Kubernetes does
    grouping Pod
    nginx
    monolith
    Pod
    nginx
    monolith
    labels:
    version: v1
    track: stable
    labels:
    version: v1
    track: test
    

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16. Labels
    selector: version=v1
    Pod
    nginx
    monolith
    Pod
    nginx
    monolith
    labels:
    version: v1
    track: stable
    labels:
    version: v1
    track: test
    

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17. Labels
    selector: track=stable
    Pod
    nginx
    monolith
    Pod
    nginx
    monolith
    labels:
    version: v1
    track: stable
    labels:
    version: v1
    track: test
    

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18. Services
    Persistent IPs for Pods
    • Uses Labels to
    Target Pods
    • Internal or External IPs
    Pod
    nginx
    monolith
    Pod
    nginx
    monolith
    Service
    10.8.244.100
    10.1.0.2
    10.1.0.1
    

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19. Deployments
    Drive current state towards desired state
    Node 1
    Pod
    app: hello
    replicas: 1
    hello
    Node 2
    

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20. Deployments
    Drive current state towards desired state
    Node 1
    Pod
    app: hello
    replicas: 2
    hello
    Node 2
    Pod
    hello
    

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21. Deployments
    Drive current state towards desired state
    Node 1
    Pod
    app: hello
    replicas: 2
    hello
    Node 2
    

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22. Deployments
    Drive current state towards desired state
    Node 1
    Pod
    app: hello
    replicas: 2
    hello
    Node 2
    Pod
    hello
    

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23. monolith
    nginx
    hello
    nginx
    Microservices
    Monolith
    auth
    

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24. Kubernetes Demo
    

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25. What about code updates?
    Photo © hjalmeida via Canva.com
    

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26. Deploy with care
    Photo © Green Jo via Canva.com
    Best
    Practice
    

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27. Rolling Update
    Node 1
    Pod
    hello
    Pod
    hello
    Node
    Pod
    hello
    Node
    Pod
    hello
    Node
    Pod
    hello
    Service
    

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28. Rolling Update
    Node 1
    Pod
    hello
    Pod
    hello
    Node
    Pod
    hello
    Node
    Pod
    hello
    Node
    Pod
    hello
    Service
    Pod
    goodbye
    

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29. Rolling Update
    Node 1
    Pod
    hello
    Pod
    hello
    Node
    Pod
    hello
    Node
    Pod
    hello
    Node
    Pod
    hello
    Service
    Pod
    goodbye
    

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30. Rolling Update
    Node 1
    Pod
    hello
    Pod
    hello
    Node
    Pod
    hello
    Node
    Pod
    hello
    Node
    Pod
    hello
    Service
    Pod
    goodbye
    

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31. Rolling Update
    Node 1
    Pod
    hello
    Pod
    hello
    Node
    Pod
    hello
    Node
    Node
    Pod
    hello
    Service
    Pod
    goodbye
    Pod
    goodbye
    

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32. Rolling Update
    Node 1
    Pod
    hello
    Pod
    hello
    Node
    Pod
    hello
    Node
    Node
    Pod
    hello
    Service
    Pod
    goodbye
    Pod
    goodbye
    

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33. Rolling Update
    Node 1
    Pod
    hello
    Pod
    hello
    Node
    Pod
    hello
    Node
    Node
    Pod
    hello
    Service
    Pod
    goodbye
    Pod
    goodbye
    

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34. Rollout
    Node 1
    Pod
    hello
    Pod
    hello
    Node
    Pod
    hello
    Node
    Node
    Service
    Pod
    goodbye
    Pod
    goodbye
    

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35. Rolling Update
    Node 1
    Pod
    hello
    Pod
    hello
    Node
    Pod
    hello
    Node
    Node
    Service
    Pod
    goodbye
    Pod
    goodbye
    Pod
    goodbye
    

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36. Rolling Update
    Node 1
    Pod
    hello
    Pod
    hello
    Node
    Pod
    hello
    Node
    Node
    Service
    Pod
    goodbye
    Pod
    goodbye
    Pod
    goodbye
    

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37. Rolling Update
    Node 1
    Pod
    hello
    Pod
    hello
    Node
    Pod
    hello
    Node
    Node
    Service
    Pod
    goodbye
    Pod
    goodbye
    Pod
    goodbye
    

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38. Rolling Update
    Node 1
    Pod
    hello
    Pod
    hello
    Node Node
    Node
    Service
    Pod
    goodbye
    Pod
    goodbye
    Pod
    goodbye
    

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39. Rollout Demo
    

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40. Best Practices Recap
    The App: Use containers
    The Infra: Automate and Monitor
    The Infra: Avoid Lock-in
    The Wild: Deploy with Care
    

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41. DevOps Engineer Nanodegree Program
    Scalable Microservices with Kubernetes
    course
    

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42. Scalable Microservices with Kubernetes
    

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43. #K8story
    Carter Morgan
    @_askcarter
    

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