kubevirt on datacenter

If images don't already exist, request CDI installation from admin - https://kubevirt.io/user-guide/operations/containerized_data_importer/

Download and upload desired images e.g. Ubuntu Jammy

export TAG=$(curl -s -w %{redirect_url} https://github.com/kubevirt/containerized-data-importer/releases/latest)
export VERSION=$(echo ${TAG##*/})
kubectl create -f https://github.com/kubevirt/containerized-data-importer/releases/download/v1.59.0/cdi-operator.yaml
kubectl create -f https://github.com/kubevirt/containerized-data-importer/releases/download/$VERSION/cdi-cr.yaml

kubectl -n cdi get all

kubectl create namespace vm-images

kubectl port-forward -n cdi service/cdi-uploadproxy 18443:443

wget https://cloud-images.ubuntu.com/jammy/current/jammy-server-cloudimg-amd64.img

virtctl image-upload dv ubuntu-cloud-base --namespace=vm-images --size=5Gi --image-path=/home/allan/kubevirt/jammy-server-cloudimg-amd64.img  --uploadproxy-url=https://127.0.0.1:18443 --access-mode=ReadWriteOnce --volume-mode=filesystem --insecure --force-bind

Optionally, also request the installation of a DataImportCron - https://github.com/kubevirt/containerized-data-importer/blob/main/doc/os-image-poll-and-update.md

Validate datasources exist

kubectl -n vms get datasource

NAME          AGE
ubuntu-2204   139d

Recreate vm. Note Fedora images already come with a qemu-guest-agent, simplifying the addition of public key access thru a k8s secret

kubectl delete virtualmachine.kubevirt.io/ubuntu-cloud-base-lab-0 -n vms
cat << EOF > ubuntu-cloud-base-lab-0.yaml
apiVersion: kubevirt.io/v1
kind: VirtualMachine
metadata:
  labels:
    min.io/vm: ubuntu-cloud-base-lab-0
  name: ubuntu-cloud-base-lab-0
  namespace: vms
spec:
  running: false
  template:
    metadata:
      labels:
        min.io/vm: ubuntu-cloud-base-lab-0
    spec:
      architecture: amd64
      domain:
        devices:
          disks:
          - disk:
              bus: virtio
            name: os
        resources:
          requests:
            memory: 4096M
      volumes:
      - dataVolume:
          name: ubuntu-cloud-base-disk
        name: os
      - cloudInitNoCloud:
          userData: |
            #cloud-config
            ssh_authorized_keys:
            - ecdsa-sha2-nistp256 abc123
            user: ubuntu
        name: cloudinitdisk
  dataVolumeTemplates:
  - metadata:
      name: ubuntu-cloud-base-disk
    spec:
      pvc:
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 10Gi
      sourceRef:
        kind: DataSource
        name: ubuntu-2204
EOF
kubectl create -f ubuntu-cloud-base-lab-0.yaml

Install virtctl locally, for ease of administration

virtctl
VERSION=$(kubectl get kubevirt.kubevirt.io/kubevirt -n vms -o=jsonpath="{.status.observedKubeVirtVersion}")
VERSION=v1.2.0
ARCH=$(uname -s | tr A-Z a-z)-$(uname -m | sed 's/x86_64/amd64/') || windows-amd64.exe
echo ${ARCH}
echo https://github.com/kubevirt/kubevirt/releases/download/$VERSION/virtctl-$VERSION-$ARCH
curl -L -o virtctl https://github.com/kubevirt/kubevirt/releases/download/${VERSION}/virtctl-${VERSION}-${ARCH}
mv virtctl-v1.2.0-darwin-arm64 virtctl
mv virtctl-v1.1.0-darwin-arm64 virtctl
chmod +x virtctl

Examine kubevirt vm objects

kubectl -n vms describe datavolume ubuntu-cloud-base-disk 
kubectl -n vms get datavolume ubuntu-cloud-base-disk
kubectl -n vms get pvc 

Start vmi

./virtctl -n vms start ubuntu-cloud-base-lab-0
kubectl -n vms get vm/ubuntu-cloud-base-lab-0 -w

Optionally, connect to vmi by console for debugging

./virtctl -n vms console ubuntu-cloud-base-lab-0

Connect to vmi using ssh. Setup a NodePort

cat << EOF > ubuntu-cloud-base-lab-0-nodeport.yaml
apiVersion: v1
kind: Service
metadata:
  name: ubuntu-cloud-base-lab-0
  namespace: vms
spec:
  ports:
  - name: ssh
    nodePort: 30022
    port: 22
    protocol: TCP
    targetPort: 22
  selector:
    min.io/vm: ubuntu-cloud-base-lab-0
  sessionAffinity: None
  type: NodePort
EOF
kubectl create -f ubuntu-cloud-base-lab-0-nodeport.yaml
kubectl -n vms get svc 

ssh -i /Users/allanreid/.ssh/id_ecdsa ubuntu@1.2.3.4 -p 30022 -o ServerAliveInterval=5 -o "ServerAliveCountMax 100000" -o "StrictHostKeyChecking=off"

or

./virtctl -n vms ssh -i /Users/allanreid/.ssh/id_ecdsa ubuntu@ubuntu-cloud-base-lab-0 -p 22 --local-ssh-opts="-o StrictHostKeyChecking=off" --local-ssh=true