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OpenFaaS is serverless functions framework that runs on top of Docker and Kubernetes. The steps in this tutorial are optional if you don't have a running KuberNETes cluster. Follow the instructions from the Set Up a KuberNetes Cluster with Kind section below. The tutorial assumes basic familiarity with Docker and the Docker Hub page for details about creating a new Docker Hub account. Use the kind create cluster command to create a cluster with one control plane and two worker nodes: kind-create cluster.