Building a Kubernetes Cluster as a Service platform on BareMetal using KubeVirt and ClusterAPI.

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A detailed guide to building a Kubernetes Cluster-as-a-Service platform on bare metal infrastructure using KubeVirt for VM management and ClusterAPI for cluster lifecycle automation. The setup enables self-service provisioning of isolated workload clusters running as VMs on shared physical hardware. Key components include Kube-OVN CNI for VM live migration support, MetalLB for load balancing, KubeVirt for virtualization, ClusterAPI with KubeVirt provider, and the KubeVirt Cloud Controller Manager for service integration. The guide covers installation steps, VM image creation with Packer, cluster class configuration for standardization, and demonstrates deploying a workload cluster with Cilium CNI and testing load balancer functionality.

Building a Kubernetes Cluster as a Service platform on BareMetal using KubeVirt and ClusterAPI

Installing ClusterAPI with the KubeVirt provider

Installing the NFS subdir external provisioner