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Kubernete Second Week

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Avatar for Mofizur Rahman Mofizur Rahman
July 24, 2019
Programming
58
0

Kubernete Second Week

Some intermediate Kubernetes primitives and concepts as part of a workshop.

Avatar for Mofizur Rahman

Mofizur Rahman

July 24, 2019

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Transcript

  1. Kubernetes Second Week Mofi Rahman

  2. @moficodes tiny.cc/k8s-second-week

  3. @moficodes github.com/moficodes/k8s-second-week

  4. Mofizur Rahman Senior Developer Advocate, Vonage Work on Client SDKs,

    Collect Stickers, Write Go and JS code @moficodes

  5. @moficodes Resource Quotas “Give me x amount of ram and

    cpu in y increment”

  6. @moficodes Example apiVersion: v1 kind: Pod metadata: name: high-priority spec:

    containers: - name: high-priority image: ubuntu resources: requests: memory: "2Gi" cpu: "100m" limits: memory: "10Gi" cpu: "500m" priorityClassName: high

  7. @moficodes Quality of Service Best Effort (not limit mentioned) Burstable

    (x > y) Guranteed (x == y)

  8. @moficodes Kubernetes Lifecycle Poststart Prestop Sigterm Sigkill

  9. @moficodes Try to not use it.

  10. @moficodes Scheduling Kubernetes is a scheduler at heart that gives

    you apis to access resources

  11. @moficodes Scheduling Affinity Nodeaffinity Podaffinity Taints Tolerations

  12. @moficodes Descheduler Kubernetes can actually kick things out if needed

    Except- Critical Pods (marked with annotations) Orphan Pods Daemonsets Pod with Storage

  13. @moficodes Jobs Batch work

  14. @moficodes Cron Jobs Timed batch works

  15. @moficodes Daemonsets Per Node pod

  16. @moficodes Init Container Runs before anything in your container

  17. @moficodes Sidecar Runs beside the container

  18. @moficodes Secrets K8S has it. It’s basically useless. 😢

  19. @moficodes Configmaps Kubernetes way of setting env

  20. Mofizur Rahman Senior Developer Advocate, Vonage Work on Client SDKs,

    Collect Stickers, Write Go and JS code @moficodes