# KubeVirt的使用 ## 1. 安装kubevirt ### 1.1. 修改镜像仓库 针对私有环境，需要将所需镜像上传到自己的镜像仓库中。 涉及的镜像组件有 ``` virt-operator virt-api virt-controller virt-launcher ``` 重命名镜像脚本如下: ```bash #!/bin/bash # kubevirt组件版本 version=$1 # 私有镜像仓库 registry=$2 # 私有镜像仓库的namespace namespace=$3 kubevirtRegistry="quay.io/kubevirt" readonly APPLIST=( virt-operator virt-api virt-controller virt-launcher ) for app in "${APPLIST[@]}"; do # 拉取镜像 docker pull ${kubevirtRegistry}/${app}:${version} # 重命名 docker tag ${kubevirtRegistry}/${app}:${version} ${registry}/${namespace}/${app}:${version} # 推送镜像 docker push ${registry}/${namespace}/${app}:${version} done echo "重新命名成功" ``` ### 1.2. 部署virt-operator 通过kubevirt operator安装kubevirt相关组件，选择指定版本，下载`kubevirt-operator.yaml`和`kubevirt-cr.yaml`文件，并创建k8s相关对象。 > 如果是私有镜像仓库，则需要将kubevirt-operator.yaml文件中镜像的名字替换为私有镜像仓库的地址，并提前按步骤1推送所需镜像到私有镜像仓库。 ```bash # Pick an upstream version of KubeVirt to install $ export RELEASE=v0.52.0 # Deploy the KubeVirt operator $ kubectl apply -f https://github.com/kubevirt/kubevirt/releases/download/${RELEASE}/kubevirt-operator.yaml # Create the KubeVirt CR (instance deployment request) which triggers the actual installation $ kubectl apply -f https://github.com/kubevirt/kubevirt/releases/download/${RELEASE}/kubevirt-cr.yaml # wait until all KubeVirt components are up $ kubectl -n kubevirt wait kv kubevirt --for condition=Available ``` ### 1.3. 部署virtctl virtctl用来启动和关闭虚拟机。 ```bash VERSION=$(kubectl get kubevirt.kubevirt.io/kubevirt -n kubevirt -o=jsonpath="{.status.observedKubeVirtVersion}") ARCH=$(uname -s | tr A-Z a-z)-$(uname -m | sed 's/x86_64/amd64/') || windows-amd64.exe echo ${ARCH} curl -L -o virtctl https://github.com/kubevirt/kubevirt/releases/download/${VERSION}/virtctl-${VERSION}-${ARCH} chmod +x virtctl sudo install virtctl /usr/local/bin ``` ## 2. kubevirt部署产物 通过手动部署virt-operator，会自动部署以下组件 | 组件 | 部署方式 | 副本数 | | --------------- | ---------- | --- | | virt-api | deployment | 2 | | virt-controller | deployment | 2 | | virt-handler | daemonset | - | 具体参考: ```bash #kg all -n kubevirt NAME READY STATUS RESTARTS AGE pod/virt-api-5fb5cffb7f-hgjjh 1/1 Running 0 23h pod/virt-api-5fb5cffb7f-jcp7x 1/1 Running 0 23h pod/virt-controller-844cd4f58c-h8vsx 1/1 Running 0 23h pod/virt-controller-844cd4f58c-vlxqs 1/1 Running 0 23h pod/virt-handler-lb5ft 1/1 Running 0 23h pod/virt-handler-mtr4d 1/1 Running 0 22h pod/virt-handler-sxd2t 1/1 Running 0 23h pod/virt-operator-8595f577cd-b9txg 1/1 Running 0 23h pod/virt-operator-8595f577cd-p2f69 1/1 Running 0 23h NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/kubevirt-operator-webhook ClusterIP 10.254.159.81 443/TCP 23h service/kubevirt-prometheus-metrics ClusterIP 10.254.7.231 443/TCP 23h service/virt-api ClusterIP 10.254.244.139 443/TCP 23h NAME DESIRED CURRENT READY UP-TO-DATE AVAILABLE NODE SELECTOR AGE daemonset.apps/virt-handler 3 3 3 3 3 kubernetes.io/os=linux 23h NAME READY UP-TO-DATE AVAILABLE AGE deployment.apps/virt-api 2/2 2 2 23h deployment.apps/virt-controller 2/2 2 2 23h deployment.apps/virt-operator 2/2 2 2 23h NAME DESIRED CURRENT READY AGE replicaset.apps/virt-api-5fb5cffb7f 2 2 2 23h replicaset.apps/virt-controller-844cd4f58c 2 2 2 23h replicaset.apps/virt-operator-8595f577cd 2 2 2 23h NAME AGE PHASE kubevirt.kubevirt.io/kubevirt 23h Deployed ``` ## 3. 创建虚拟机 通过vm.yaml创建虚拟机 ```bash # 下载vm.yaml wget https://kubevirt.io/labs/manifests/vm.yaml # 创建虚拟机 kubectl apply -f https://kubevirt.io/labs/manifests/vm.yaml ``` vm.yaml文件 ```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= ``` 查看虚拟机 ```bash kubectl get vms kubectl get vms -o yaml testvm ``` 启动或暂停虚拟机 ```bash # 启动虚拟机 virtctl start testvm # 关闭虚拟机 virtctl stop testvm # 进入虚拟机 virtctl console testvm ``` 删除虚拟机 ```bash kubectl delete vm testvm ``` 参考： * [Installation - KubeVirt User-Guide](http://kubevirt.io/user-guide/operations/installation/#installing-kubevirt-on-kubernetes) * [KubeVirt quickstart with Minikube | KubeVirt.io](https://kubevirt.io/quickstart_minikube/) * [Use KubeVirt | KubeVirt.io](https://kubevirt.io/labs/kubernetes/lab1.html) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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