How to install a service in Fedora CoreOS

Ask Fedora
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6

Ahh. You know we are learning more and more about kubevirt ourselves as we go through this. What I’ve found out over time is that a “containerdisk” in kubevirt land isn’t something that’s persistent. i.e. it’s kind of like containers where when you stop a container and start it again anything that wasn’t in a Volume is gone. That’s what you are hitting here.

You can try to start a virtual machine type and use the data importer stuff to get the container imported into an actual PV (i.e. the OS will be persistent). Try with something like this:

---
apiVersion: kubevirt.io/v1
kind: VirtualMachine
metadata:
  name: fcos
spec:
  runStrategy: Always
  dataVolumeTemplates:
  - metadata:
      name: fcos-os-disk-volume
    spec:
      storage:
        volumeMode: Block
        resources:
          requests:
            storage: 10Gi
        accessModes:
          - ReadWriteOnce
      source:
        registry:
          url: "docker://quay.io/fedora/fedora-coreos-kubevirt:stable"
  template:
    spec:
      domain:
        devices:
          disks:
          - disk:
              bus: virtio
            name: fcos-os-disk
          - disk:
              bus: virtio
            name: cloudinitdisk
          rng: {}
        resources:
          requests:
            memory: 2048M
      volumes:
      - dataVolume:
          name: fcos-os-disk-volume
        name: fcos-os-disk
	  - name: cloudinitdisk
		cloudInitConfigDrive:
		  secretRef:
			name: ignition-payload

Depending on your cluster you may need to set storageClassName: name under dataVolumeTemplates.spec.storage.