keda-demos

This repository contains demo code I used while presenting on KEDA (keda.sh)

Azure Queue

azure-queue-demo contains an Azure Function that gets triggered by items on an Azure Queue. azure-queue-filler is a small commandline app to add simple messages to the queue to test the azure-queue-demo

This blog contains a complete walk-through creating this example but also setting-up an AKS cluster and deploy KEDA.

Add a local.settings.json file containing this json:

{
    "IsEncrypted": false,
    "Values": {
        "AzureWebJobsStorage": "<storage-connection-string>",
        "FUNCTIONS_WORKER_RUNTIME": "dotnet"
    }
}

Then either run

func kubernetes deploy --name hello-keda --registry <dockerID> --dry-run > deploy.yaml
kubectl apply -f deploy.yaml

or

func kubernetes deploy --name hello-keda --registry <dockerID>

Prometheus

The prometheus-netcore-api-demo folder contains a .NET Core API that exposes metrics to Prometheus. KEDA will scale that deployment based on the number of requests. Deploy using

kubectl apply -f prometheus.yaml
kubectl apply -f app.yaml
kubectl apply -f keda-prometheus-scaledobject.yaml

Job

console-job-demo contains an .NET Core console application that reads data from an Azure queue. Deploy that using

kubectl apply -f job.yaml

and then add an item to your queue.