kubecon eu 2016: kubernetes hardware hacks: exploring the kubernetes api through knobs, faders, and...

Ian LewisDeveloper Relations

Kubernetes Hardware HacksExploring the Kubernetes API Through Knobs, Faders, and Sliders

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Ian LewisDeveloper Advocate - Google Cloud PlatformTokyo, Japan

google.com/+IanLewis-hoge@IanMLewis

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私は日本語ちょっとできます

I can speak Japanese a little

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Dashboard

Jean-Etienne PoirrierCreative Commons

Duch.sebCreative Commons

Google Cloud Platform

kubelet

UI

kubelet CLI

API

users master nodes

The 10000 foot view

etcd

kubelet

scheduler

controllers

apiserver

Google Cloud Platform

UI

All you really care about

APIContainer

Cluster

Google Cloud Platform

UI

All you really care about

APIContainer

Cluster

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http://localhost:8888/swagger-ui/

Google Cloud Platform

Objects

● Nodes● Pods● ReplicationControllers● Services● etc.

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observe

diff

act

Google Cloud Platform

Clients

● CLI: kubectl!● Official Go client● Fabric8/OSGi● pykube● More: kubernetes/docs/devel/client-libraries.

md

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kubectl proxy & curl

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kubectl

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kubectl get podsGET /api/v1/namespaces/default/pods{ "kind": "PodList", "apiVersion": "v1", "metadata": { "selfLink": "/api/v1/namespaces/default/pods", "resourceVersion": "3742101" }, "items": [ … ]}

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kubectl get pods --namespace=mynsGET /api/v1/namespaces/myns/pods{ "kind": "PodList", "apiVersion": "v1", "metadata": { "selfLink": "/api/v1/namespaces/myns/pods", "resourceVersion": "3742101" }, "items": [ … ]}

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kubectl label pod mypod a=b

PUT /api/v1/namespaces/default/pods/mypod…“metadata”: { “labels”: [“a”: “b”, …]}...

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kubectl rolling-update

GET /api/v1/namespaces/default/replicationcontrollers/BPOST /api/v1/namespaces/default/replicationcontrollers...PUT /api/v1/namespaces/default/replicationcontrollers/B...PUT /api/v1/namespaces/default/replicationcontrollers/A...

Google Cloud Platform

Dashboard

publisher

subscriber

launchpad

launchcontrol

APIscale

get pods

Google Cloud Platform

Dashboard

publisher

subscriber

launchpad

launchcontrol

APIscale

get pods

?

?

Google Cloud Platform

Standard Deployment

● Docker deployments require lots of tooling● Kubernetes API has visibility into the cluster● Great for building things on top like CI, CD,

and dashboards!

Done! Thanks!@IanMLewis