KEDA Azure Storage Queue demo

For more information about KEDA: https://keda.sh/

Prerequisites

• Working K8s cluster
• Microsoft Storage Emulator
• Local docker registry: https://www.quickdevnotes.com/hosting-first-private-docker-registry/

Apply KEDA on your K8s cluster

Use deployments/scaling-function/apply-keda.sh to install KEDA on your K8s cluster.

Build docker image

Go to the folder Scaling.Function and run: docker build -t scaling/queuetrigger-function .

Publish the docker image

I used a local docker registry, but you can also use your Docker Hub, but then you needs to change the image tag in: deployments/scaling-function/deployment.yaml Go to the folder Scaling.Function and run: docker build -t scaling:demo-v4 . docker tag scaling:demo-v4 localhost:5000/scaling/demo-v4 docker push localhost:5000/scaling/demo-v4

Deploy the demo scaling function to your K8s cluster

Use deployments/scaling-function/deploy.sh to install the scaling-function on your K8s cluster.

Check that there is deployment

kubectl get deploy -n demo

Check that there are no pods yet

kubectl get pods -n demo

Add messages to Azure storage queue: 'demo-scaling-items'

Go to the folder Scaling.QueueFillApp and run dotnet run 10 20 This command will add 10 messages to the queue with a duration of 20 seconds per message. The default duration is 5 seconds.

Check that there are pods active

kubectl get pods -n demo

Remove the demo scaling function from your K8s cluster

Use deployments/scaling-function/remove.sh to remove the scaling-function from your K8s cluster.

Remove KEDA from your K8s cluster

Use deployments/scaling-function/remove-keda.sh to remove KEDA from your K8s cluster.