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kubernetes 101 @agonzalezro

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What's Kubernetes? "Kubernetes is an open source orchestration system for Rocket containers for Docker containers."

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Concepts NOTE: all the names link to their documentation.

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Pod

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Replication Controller

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Label

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Namespace

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Service ClusterIP NodePort LoadBalancer

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Ingress

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{scheduled,}Job

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Secrets

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New in 1.2

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DaemonSet

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Deploy (β)

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ConfigMap

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One more thing

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Readiness & liveness probes

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DEMO! DEMO! DEMO!

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AWS export AWS_DEFAULT_PROFILE=myawsprofile export KUBE_AWS_ZONE=eu-west-1c export MASTER_SIZE=m3.medium export NODE_SIZE=m3.medium ... # config/aws/default-config.sh export KUBERNETES_PROVIDER=aws; wget -q -O - https://get.k8s.io | bash

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or GKE gcloud config set project k8s-jobandtalent gcloud container clusters get-credentials cluster-1

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Cluster thingies kubectl cluster-info kubectl config view

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Your first cattle kubectl run nginx --image=nginx:1.9.12 # Thanks Kelsey! kubectl expose deployment nginx --port=80 --type=LoadBalancer

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kubectl get services <<< NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE kubernetes 10.3.240.1 443/TCP 25m nginx 10.3.247.144 146.148.8.48 80/TCP 1m

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kubectl exec -it nginx...

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Let's yamlized it cat examples/k8s/*.yml

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kubectl create -f ... # Change ... for your yaml :)

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Rolling upgrade kubectl rolling-update hello-rc -f api-rc2.yml

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Or... (since 1.2) # edit file kubectl replace -f ... # where ... is your yaml

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And {auto,}scaling kubectl scale rc hello-rc --replicas=5 kubectl autoscale rc hello-rc --min=X --max=Y

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Thanks! @agonzalezro