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Ian Lewis
Developer Relations
Kubernetes Hardware Hacks
Exploring the Kubernetes API Through Knobs, Faders, and Sliders
Confidential & ProprietaryGoogle Cloud Platform 2
Ian Lewis
Developer Advocate - Google Cloud Platform
Tokyo, Japan
google.com/+IanLewis-hoge
@IanMLewis
Confidential & ProprietaryGoogle Cloud Platform 3
私は日本語ちょっとできます
I can speak Japanese a little
Confidential & ProprietaryGoogle Cloud Platform 4
Dashboard
Jean-Etienne Poirrier
Creative Commons
Duch.seb
Creative Commons
Google Cloud Platform
kubelet
UI
kubeletCLI
API
users master nodes
The 10000 foot view
etcd
kubelet
scheduler
controllers
apiserver
Google Cloud Platform
UI
All you really care about
API
Container
Cluster
Google Cloud Platform
UI
All you really care about
API
Container
Cluster
Confidential & ProprietaryGoogle Cloud Platform 11
http://localhost:8888/swagger-ui/
Google Cloud Platform
Objects
● Nodes
● Pods
● ReplicationControllers
● Services
● etc.
Confidential & ProprietaryGoogle Cloud Platform 13
observe
diff
act
Google Cloud Platform
Clients
● CLI: kubectl!
● Official Go client
● Fabric8/OSGi
● pykube
● More: kubernetes/docs/devel/client-libraries.
md
Confidential & ProprietaryGoogle Cloud Platform 15
kubectl proxy & curl
Confidential & ProprietaryGoogle Cloud Platform 16
kubectl
Confidential & ProprietaryGoogle Cloud Platform 17
kubectl get pods
GET /api/v1/namespaces/default/pods
{
"kind": "PodList",
"apiVersion": "v1",
"metadata": {
"selfLink": "/api/v1/namespaces/default/pods",
"resourceVersion": "3742101"
},
"items": [
…
]
}
Confidential & ProprietaryGoogle Cloud Platform 18
kubectl get pods --namespace=myns
GET /api/v1/namespaces/myns/pods
{
"kind": "PodList",
"apiVersion": "v1",
"metadata": {
"selfLink": "/api/v1/namespaces/myns/pods",
"resourceVersion": "3742101"
},
"items": [
…
]
}
Confidential & ProprietaryGoogle Cloud Platform 19
kubectl label pod mypod a=b
PUT /api/v1/namespaces/default/pods/mypod
…
“metadata”: {
“labels”: [“a”: “b”, …]
}
...
Confidential & ProprietaryGoogle Cloud Platform 20
kubectl rolling-update
GET /api/v1/namespaces/default/replicationcontrollers/B
POST /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
API
scale
get pods
Google Cloud Platform
Dashboard
publisher
subscriber
launchpad
launchcontrol
API
scale
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

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