Kubevirt VMs on Kubernetes Guide

kubectl get pods     → shows containers AND VMs
kubectl get vms      → shows virtual machines

# Install KubeVirt operator
kubectl apply -f https://github.com/kubevirt/kubevirt/releases/latest/download/kubevirt-operator.yaml

# Install KubeVirt CR
kubectl apply -f https://github.com/kubevirt/kubevirt/releases/latest/download/kubevirt-cr.yaml

# Wait for deployment
kubectl wait -n kubevirt kv kubevirt --for=condition=Available --timeout=5m

# Install virtctl CLI
kubectl krew install virt

apiVersion: kubevirt.io/v1
kind: VirtualMachine
metadata:
  name: ubuntu-vm
spec:
  running: true
  template:
    metadata:
      labels:
        app: ubuntu-vm
    spec:
      domain:
        devices:
          disks:
            - name: rootdisk
              disk:
                bus: virtio
            - name: cloudinit
              disk:
                bus: virtio
          interfaces:
            - name: default
              masquerade: {}
        resources:
          requests:
            memory: 2Gi
            cpu: "2"
      networks:
        - name: default
          pod: {}
      volumes:
        - name: rootdisk
          containerDisk:
            image: quay.io/containerdisks/ubuntu:22.04
        - name: cloudinit
          cloudInitNoCloud:
            userData: |
              #cloud-config
              password: changeme
              chpasswd:
                expire: false
              ssh_authorized_keys:
                - ssh-rsa AAAA...

kubectl apply -f ubuntu-vm.yaml

# Check VM status
kubectl get vms
# NAME        AGE   STATUS    READY
# ubuntu-vm   30s   Running   True

# Console access
virtctl console ubuntu-vm

# SSH access (via port-forward)
virtctl ssh ubuntu@ubuntu-vm

apiVersion: v1
kind: Service
metadata:
  name: ubuntu-vm-ssh
spec:
  selector:
    app: ubuntu-vm
  ports:
    - port: 22
      targetPort: 22
  type: ClusterIP

# Migrate VM to another node
virtctl migrate ubuntu-vm

# Check migration status
kubectl get vmim

volumes:
  - name: data
    persistentVolumeClaim:
      claimName: vm-data-pvc

domain:
  resources:
    requests:
      memory: 4Gi
      cpu: "4"
  devices:
    disks:
      - name: windows
        disk:
          bus: sata
volumes:
  - name: windows
    persistentVolumeClaim:
      claimName: windows-server-disk

# Spin up a Fedora VM for testing
virtctl create vm --name test-fedora --image quay.io/containerdisks/fedora:39

[Container: API Gateway] → [Container: Auth Service] → [VM: Oracle Database]
         ↓
[Container: Web Frontend]