Example of persistent installation with KubeVirt and RHCOS

vm-rhcos.yaml

apiVersion: kubevirt.io/v1
kind: VirtualMachine
metadata:
  labels:
    kubevirt.io/vm: test-ign
  name: test-ign
spec:
  dataVolumeTemplates:
  - metadata:
      name: rhcos-dv
    spec:
      pvc:
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 20Gi
        storageClassName: local
      source:
        registry:
          url: "docker://quay.io/containerdisks/rhcos:4.9"
          pullMethod: node # Using the node pullMode uses the host cache for the container images
  running: true
  template:
    metadata:
      labels:
        kubevirt.io/vm: test-ign
    spec:
      domain:
        devices:
          disks:
          - disk:
              bus: virtio
            name: dv
          - disk:
              bus: virtio
            name: cloudinitdisk
        resources:
          requests:
            memory: 2G
            cpu: "2000m"
      volumes:
        - dataVolume:
            name: rhcos-dv
          name: dv
        - cloudInitConfigDrive:
            userData: |
              {
                "ignition": {
                  "version": "3.3.0"
                },
                "passwd": {
                  "users": [
                    {
                      "name": "core",
                      "sshAuthorizedKeys": [
                        "ssh-rsa AA..."
                      ]
                    }
                  ]
                },
                "systemd": {
                  "units": [
                    {
                      "dropins": [
                        {
                          "contents": "[Service]\n# Override Execstart in main unit\nExecStart=\n# Add new Execstart with `-` prefix to ignore failure`\nExecStart=-/usr/sbin/agetty --autologin core --noclear %I $TERM\n",
                          "name": "autologin-core.conf"
                        }
                      ],
                      "name": "serial-getty@ttyS0.service"
                    }
                  ]
                }
              }
          name: cloudinitdisk
~