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Salad Cloud Virtual Kubelet Demo

These files were originally used in dtroyer's KubeCon2023 talk.

Run the Demo

This outlines running the demo on Docker Desktop's Kubernetes implementation:

  • Set up the environment with a .env file (or equivalent) similar to this one: 
    export LOG_LEVEL=INFO
export SCE_API_KEY=<api-key>
export SCE_ORGANIZATION_NAME=salad
export SCE_PROJECT_NAME=demo
export NAMESPACE=saladcloud-demo
export NODE_NAME=${SCE_PROJECT_NAME}
  • Start with a fresh Kubernetes environment. Only the docker-desktop conrol plane should be displayed with kubectl get node and kubectl get pod. demo.sh status will run both of those commands at once.
  • Run the virtual kubelet via its Helm chart using demo.sh start.
  • Run demo.sh status again to see that the virtual kubelet is registered as an agent
  • Start the QR code workload with kubectl apply qr.yaml.
  • Run demo.sh status again to see two additional pods listed that are the requested container groups. The pod names should match the Container Groups in the Salad Portal (NOTE: with a prefix!)
  • Note that Kubernetes pods are mapped to SCE Container Groups 1:1, specifying 2 replicas on the YAML spec will result in two Contarer Groups being created. At this time there is not a mechanism to specify the Container Group replicas and it will always be 1.
  • Once a Container Group is shown running, grab the assigned URL from the portal and paste it into a browser. Commence generating crazy QR codes that look like city skylines or a plaid flannel shirt.
  • Run kubectl delete -f qr.yaml to stop the Container Groups.
  • Run demo.sh stop to stop the virtual kubelet pod.