Virtualization - Ubuntu

Guide: https://kubevirt.io/2020/KubeVirt-installing_Microsoft_Windows_from_an_iso.html

Running the ubuntu live vm

Here’s the working example of an ubuntu VM with cloud-init, added SSH key and emptyDir scratch disk:

apiVersion: kubevirt.io/v1
kind: VirtualMachine
metadata:
  name: myvm
spec:
  running: false
  template:
    spec:
      accessCredentials:
      - sshPublicKey:
          propagationMethod:
            configDrive: {}
          source:
            secret:
              secretName: pub-keys
      architecture: amd64
      domain:
        cpu:
          cores: 8
        devices:
          autoattachGraphicsDevice: true
          autoattachSerialConsole: true
          disks:
          - disk:
              bus: virtio
            name: harddrive
          - disk:
              bus: virtio
            name: virtiocontainerdisk
            bootOrder: 1
          - disk:
              bus: virtio
            name: cloudinit
        machine:
          type: q35
        resources:
          limits:
            cpu: 800m
            memory: 8Gi
          requests:
            cpu: 800m
            memory: 8Gi
      volumes:
      - containerDisk:
          image: quay.io/containerdisks/ubuntu:22.04
        name: virtiocontainerdisk
      - emptyDisk:
          capacity: 16Gi
        name: harddrive
      - cloudInitConfigDrive:
          userData: |-
            #cloud-config
            disk_setup:
              /dev/vda:
                table_type: gpt
                layout: True
                overwrite: True
            fs_setup:
              - device: /dev/vda
                partition: 1
                filesystem: xfs
            mounts:
             - [ vda, /opt/data ]
        name: cloudinit

You also need to create the secret with your SSH key to login with:

apiVersion: v1
data:
  key1: <base64-encoded key>
kind: Secret
metadata:
  name: pub-keys
type: Opaque

Use virtctl to start the VM:

virtctl start myvm

Open VNC or SSH:

virtctl vnc myvm
virtctl ssh ubuntu@myvm

Example of an ubuntu vm with large local disk on linstor

apiVersion: kubevirt.io/v1
kind: VirtualMachine
metadata:
  name: ubuntu-vm
spec:
  dataVolumeTemplates:
  - metadata:
      name: ubuntu-2204
    spec:
      source:
        registry:
          url: "docker://quay.io/containerdisks/ubuntu:22.04"
      pvc:
        accessModes:
          - ReadWriteOnce
        resources:
          requests:
            storage: 150Gi
        storageClassName: linstor-igrok
  running: true
  template:
    metadata:
      creationTimestamp: null
    spec:
      accessCredentials:
      - sshPublicKey:
          source:
            secret:
              secretName: pub-keys
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: topology.kubernetes.io/region
                operator: In
                values:
                - us-west
              - key: nautilus.io/linstor
                operator: In
                values:
                - "true"
      architecture: amd64
      domain:
        cpu:
          cores: 8
        devices:
          autoattachGraphicsDevice: true
          autoattachSerialConsole: true
          disks:
          - bootOrder: 1
            disk:
              bus: virtio
            name: datavolumedisk1
        machine:
          type: q35
        resources:
          limits:
            ephemeral-storage: 100Gi
            memory: 8Gi
            cpu: 8
          requests:
            ephemeral-storage: 100Gi
            memory: 8Gi
            cpu: 8
      volumes:
      - dataVolume:
          name: ubuntu-2204
        name: datavolumedisk1
      - cloudInitConfigDrive:
          userData: |-
            #cloud-config
        name: cloudinit