kubevirt image upload through CDI

Good/Right links https://kubevirt.io/2019/How-To-Import-VM-into-Kubevirt.html

Step 1: Get your cluster up

(does not matter what it is minikube or real)

2108  minikube ip
2109  no_proxy="127.0.0.1,192.168.39.157"
2110  kubectl get pods

Step 2. Install kubevirt

https://kubevirt.io/user-guide/docs/latest/administration/intro.html

2111  kubectl apply -f https://github.com/kubevirt/kubevirt/releases/download/v0.24.0/kubevirt-operator.yaml
2112  kubectl get pods -n kubevirt
2113  kubectl apply -f https://github.com/kubevirt/kubevirt/releases/download/v0.24.0/kubevirt-cr.yaml

Step 3 - Install virtctl

(via binary - https://kubevirt.io/quickstart_minikube/ or via Krew below)

2114  kubectl get pods -n kubevirt
2115  (   set -x; cd "$(mktemp -d)" &&   curl -fsSLO "https://github.com/kubernetes-sigs/krew/releases/download/v0.3.3/krew.{tar.gz,yaml}" &&   tar zxvf krew.tar.gz &&   KREW=./krew-"$(uname | tr '[:upper:]' '[:lower:]')_amd64" &&   "$KREW" install --manifest=krew.yaml --archive=krew.tar.gz &&   "$KREW" update; )
2116  export PATH="${KREW_ROOT:-$HOME/.krew}/bin:$PATH"
2117  kubectl krew
2118  kubectl krew install virt

Step 4: Install CDI -Containarized Data Importer

https://kubevirt.io/2018/containerized-data-importer.html https://kubevirt.io/labs/kubernetes/lab2.html

2121  export VERSION=$(curl -s https://github.com/kubevirt/containerized-data-importer/releases/latest | grep -o "v[0-9]\.[0-9]*\.[0-9]*")
 2122  kubectl create -f https://github.com/kubevirt/containerized-data-importer/releases/download/$VERSION/cdi-operator.yaml
 2123  kubectl create -f https://github.com/kubevirt/containerized-data-importer/releases/download/$VERSION/cdi-cr.yaml
 2124  kubectl get pods -n kubevirt
 2125  kubectl get pods -n cdi
 2126  kubectl get service  -n cdi

Step 5: There are two ways to upload

(probably many more earlier ex https://github.com/fabiand/kubectl-plugin-pvc/raw/master/install.sh)

1. Use the pod importer by giving the http path of the OS image in the Peristant Volume. The CDI will bring up an importer node

Example https://kubevirt.io/labs/kubernetes/lab2.html
Better Exnaple - https://kubevirt.io/2018/containerized-data-importer.html check golden-pvc.yaml

2. Download an image to your local path and use virtctl image-upload through cdi-upload-porxy serivice to 'upload' the local image to the PV. This is what we are doing below.

(local image downloaded from - https://download.cirros-cloud.net/0.4.0/cirros-0.4.0-x86_64-disk.img // img or qcow2 format)

For this we need to expose cdi-uploadproxy as a NodePort.

2129  kubectl describe service cdi-uploadproxy -n cdi 
2130  cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: Service
metadata:
 name: cdi-uploadproxy-nodeport
 namespace: cdi
 labels:
   cdi.kubevirt.io: "cdi-uploadproxy"
spec:
 type: NodePort
 ports:
   - port: 443
     targetPort: 8443
     nodePort: 31001
     protocol: TCP
 selector:
   cdi.kubevirt.io: cdi-uploadproxy
EOF

Get the IP of the service thorugh which it can be accessed. For NodePort this is usually the Node IP. Since K8s is running in minikube it is minikube IP

2144 minikube service cdi-uploadproxy-nodeport --url -n cdi

Thats it - Now use the --insecure option to upload (else you will get certificate errror)

2147  kubectl virt image-upload --pvc-name=cirros-vm-disk2 --pvc-size=500Mi --image-path=/home/alex/Downloads/cirros-0.4.0-x86_64-disk.img --uploadproxy-url=https://192.168.39.157:31001 --insecure

ouput

Using existing PVC default/cirros-vm-disk2
Uploading data to https://192.168.39.157:31001

 12.13 MiB / 12.13 MiB [======================================================================================================================================] 100.00% 1s

Uploading /home/alex/Downloads/cirros-0.4.0-x86_64-disk.img completed successful

Last - Create the VirtualMachineInstance

cat <<EOF | kubectl apply -f -
apiVersion: kubevirt.io/v1alpha3
kind: VirtualMachineInstance
metadata:
  name: cirros-vm
spec:
  domain:
    devices:
      disks:
      - disk:
          bus: virtio
        name: pvcdisk
    machine:
      type: ""
    resources:
      requests:
        memory: 64M
  terminationGracePeriodSeconds: 0
  volumes:
  - name: pvcdisk
    persistentVolumeClaim:
      claimName: cirros-vm-disk2
status: {}
EOF

That's it folks!

alex@drone-OMEN:/home$ kubectl get vmi
NAME        AGE   PHASE     IP            NODENAME
cirros-vm   96m   Running   172.17.0.15   minikube

Note - If you are doing in Minikube, make sure sufficient memory is there for the VM in the VM, else it may not come up.

alexcpn/kubevirt image upload.md