OpenShift Virtualization (CNV/KubeVirt)

My lab environment

build with hetzner-ocp4

Containerized Data Importer (CDI) / DataVolume

apiVersion: cdi.kubevirt.io/v1alpha1
kind: DataVolume
metadata:
  name: registry-image-datavolume
spec:
  pvc:
    accessModes:
    - ReadWriteMany
    resources:
      requests:
        storage: 5Gi
  source:
    registry:
      url: docker://image-registry.openshift-image-registry.svc:5000/cnv-demo/build-vm-image-container:latest
      certConfigMap: "tls-certs"

Source: cdi-examples

Build container image with OS disk

oc new-build --name cirros \
    --build-arg image_url=http://download.cirros-cloud.net/0.5.1/cirros-0.5.1-x86_64-disk.img \
    https://github.com/openshift-examples/cnv-container-disk-build.git

Local IIS build in my lab

qemu-img convert -f raw -O qcow2 disk.img iis.qcow2

cat - > Dockerfile <<EOF
FROM scratch
LABEL maintainer="Robert Bohne <robert.bohne@redhat.com>"
ADD iis.qcow2 /disk/rhel.qcow2
EOF


oc create is iis -n cnv

export REGISTRY=$(oc get route default-route -n openshift-image-registry --template='{{ .spec.host }}')
export REGISTRY_TOKEN=$(oc whoami -t)
podman login -u $(oc whoami) -p $REGISTRY_TOKEN --tls-verify=false $HOST

podman build -t ${REGISTRY}/cnv/iis:latest .
podman push ${REGISTRY}/cnv/iis:latest

# Deploy template
oc apply -f https://raw.githubusercontent.com/openshift-examples/web/master/content/kubevirt/iis-template.yaml

Resources and useful articles

• Deploying Vms On Kubernetes Glusterfs Kubevirt
• Kubevirt Network Deep Dive

• Upstream containerized-data-importer

• Deploy openSUSE Leap15 VM in Kubernetes using KubeVirt

• Kubernetes and Virtualization: kubevirt will let you spawn virtual machine on your cluster!

• Very old, please double check: Know Issue: No IP address in VM after pod deletion #1646

• https://developers.redhat.com/blog/2018/10/22/introduction-to-linux-interfaces-for-virtual-networking/
• https://www.praqma.com/stories/debugging-kubernetes-networking/

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Last update: December 8, 2020