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KaiWedekind/gist:7dedbfc0ba61063eb625c46468cd8ab1

Forked from jbeda/gist:9a2097c726584560fa13f6c1ae13abfb
Created March 12, 2019 22:32
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  1. @jbeda jbeda created this gist Jun 30, 2017.
    45 changes: 45 additions & 0 deletions gistfile1.txt
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    # This tells kubecfg to read its config from the local directory
    export KUBECONFIG=./kubeconfig

    # Looking at the cluster
    kubectl get nodes
    kubectl get pods --namespace=kube-system

    # Running a single pod
    kubectl run --generator=run-pod/v1 --image=gcr.io/kuar-demo/kuard-amd64:1 kuard
    kubectl get pods
    kubectl run --generator=run-pod/v1 --image=gcr.io/kuar-demo/kuard-amd64:1 kuard --dry-run -o yaml
    kubectl get pods kuard -o yaml
    kubectl port-forward kuard 8080:8080
    kubectl delete pod kuard

    # Running a deployment
    kubectl run --image=gcr.io/kuar-demo/kuard-amd64:1 kuard --replicas=5 --dry-run -o yaml
    kubectl run --image=gcr.io/kuar-demo/kuard-amd64:1 kuard --replicas=5
    kubectl get pods

    # Running a service
    kubectl expose deployment kuard --type=LoadBalancer --port=80 --target-port=8080 --dry-run -o yaml
    kubectl get service kuard -o wide

    # Wait a while for the ELB to be ready
    KUARD_LB=$(kubectl get service kuard -o jsonpath='{.status.loadBalancer.ingress[*].hostname}')

    ---
    # Doing a deployment
    ## Window 1
    ## On the mac, install with `brew install watch`
    watch -n 0.1 kubectl get pods

    ## Window 2
    ## On the mac, install with `brew install jq`
    while true ; do curl -s http://${KUARD_LB}/env/api | jq '.env.HOSTNAME'; done

    ## Window 3
    kubectl scale deployment kuard --replicas=10
    kubectl set image deployment kuard kuard=gcr.io/kuar-demo/kuard-amd64:2
    kubectl rollout undo deployment kuard

    ---
    # Clean up
    kubectl delete deployment,service kuard