kubevirt 用法

 

Install tools

install kubevirt:  https://kubebyexample.com/learning-paths/kubevirt-fundamentals/guided-exercise-installing-kubevirt  (Tiber install, no need import)

install krew ref https://krew.sigs.k8s.io/docs/user-guide/setup/install/  (manually installation)

Install virtctl:  https://kubevirt.io/user-guide/user_workloads/virtctl_client_tool/ (manually installation)

check CRD

kubectl api-resources  |grep kubevirt

Create a VM

Hello World VM ref: https://docs.starlingx.io/kube-virt/hello-world-kubevirt-vm-05503659173c.html

VM yaml 

apiVersion: kubevirt.io/v1

kind: VirtualMachine

metadata:

  name: testvm

spec:

  running: false

  template:

    metadata:

      labels:

        kubevirt.io/size: small

        kubevirt.io/domain: testvm

    spec:

      domain:

        devices:

          disks:

            - name: containerdisk

              disk:

                bus: virtio

            - name: cloudinitdisk

              disk:

                bus: virtio

          interfaces:

          - name: default

            masquerade: {}

        resources:

          requests:

            memory: 64M

      networks:

      - name: default

        pod: {}

      volumes:

        - name: containerdisk

          containerDisk:

            image: quay.io/kubevirt/cirros-container-disk-demo

        - name: cloudinitdisk

          cloudInitNoCloud:

            userDataBase64: SGkuXG4=

Helm chart example

There is an example on github: intel-iot-devkit/sample-helm-charts: This repository contains sample helm charts for container and vm-based workload deployments. (github.com) 

 

Create VM by virt

REF:　Creating VirtualMachines - KubeVirt user guide

kubectl virt create vm --help
kubectl virt create vm --name my-vm --memory 256Mi　| kubectl create -f -
kubectl virt create vm --name my-vm --memory=1Gi --volume-containerdisk=src:my.registry/my-image:my-tag
kubectl virt create instancetype --cpu 2 --memory 256Mi

 Create VM by webUI

REF: 

kubevirt-manager.io: get started， github：kubevirt-manager/kubevirt-manager: Kubevirt Web UI / Web Interface Manager (github.com)

KubeVirt Web User Interface　github: https://github.com/kubevirt/web-ui

Kubernetes Management Platform | Portainer 是不是也支持，需要调查一下。 

kubectl apply -f https://raw.githubusercontent.com/kubevirt-manager/kubevirt-manager/main/kubernetes/bundled.yaml
# 使用端口转发来访问集群中的应用 | Kubernetes
kubectl get node -o wide
kubectl port-forward -n kubevirt-manager service/kubevirt-manager 28080:8080
clusterip=$(kubectl -n kubevirt-manager get svc -l app=kubevirt-manager -o jsonpath='{.items[0].spec.clusterIP}')
echo "copy the var to edge node: clusterip=$clusterip"

sudo apt install socat -y

IPADDR=$(ip route get 1 | head -n 1 | grep -o 'src\s[.0-9a-z]\+' | awk '{print $2}')

echo "login windows and open a browser with http://$IPADDR:8080"

clusterip=$clusterip

sudo ufw allow 8080/tcp

socat TCP-LISTEN:8080,fork TCP:${clusterip}:8080

 

Get the VM configure

kubectl get vm -o yaml

kubectl get vmi -o yaml

 

clusterip