Using Helm to Deploy Azure Functions on Kubernetes

In the previous post on running Azure Functions on Kubernetes we deployed everything using manual commands. To improve upon the solution, I created a Helm Chart that enables you to deploy the Function Application. There are a few advantages to this:

• Simplified upgrades
• Simplify the deployment of multiple Functions
• Simplify the CI/CD of multiple Function App

Checkout the chart at https://github.com/jsturtevant/azure-functions-kubernetes-chart. There are a few improvements that need to be made, such as setting up with Secrets for a private repository to pull the image. PR’s are welcome :-).

Usage

To use, clone the repository and cd into the folder and run:

helm install --set functionApp.name=sampleapp \
             --set resources.requests.cpu=200m \
             --set image.repository=vyta/functions \
             --set scale.maxReplicas=10 \
             --set scale.minReplicas=1 \
             --set scale.cpuUtilizationPercentage=50 \
             ./az-func-k8