kubevirt使用noVNC访问虚拟机开机自启解决办法

原创已于 2022-04-21 15:14:32 修改 · 2k 阅读

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于 2022-04-21 15:12:49 首次发布

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1.介绍：

NoVNC是一个使用WebSockets和HTML5 Canvas的javaScript VNC客户端。我们提供websocker api用于VNC访问下：

APISERVER:/apis/subresources.kubevirt.io/v1alpha3/namespaces/NAMESPACE/virtualmachineinstances/VM/vnc

但是我们不能直接访问VNC api,因为需要授权，为了解决这个问题，我们提供了一个组件kubectl proxy用来提供一个授权的vnc访问，我们命名这个组件virtVNC。

2.准备Docker镜像：

根据自己kubernetes的版本下载对应的镜像：Docker Hub，镜像执行如下：SHI

# cat Dockerfile 
FROM bitnami/kubectl:1.21.2

CMD ["proxy", "--accept-hosts=^.*$", "--address=[::]", "--api-prefix=/k8s/"]

使用docker build构建docker镜像：

docker build -t quay.io/samblade/virtvnc:v0.1 .

3.使用kubernetes来部署virtvnc:

# cat virtvnc.yaml 
apiVersion: v1
kind: ServiceAccount
metadata:
  name: virtvnc
  namespace: kubevirt
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: virtvnc
subjects:
- kind: ServiceAccount
  name: virtvnc
  namespace: kubevirt
roleRef:
  kind: ClusterRole
  name: virtvnc
  apiGroup: rbac.authorization.k8s.io
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: virtvnc
rules:
- apiGroups:
  - subresources.kubevirt.io
  resources:
  - virtualmachineinstances/console
  - virtualmachineinstances/vnc
  verbs:
  - get
- apiGroups:
  - kubevirt.io
  resources:
  - virtualmachines
  - virtualmachineinstances
  - virtualmachineinstancepresets
  - virtualmachineinstancereplicasets
  - virtualmachineinstancemigrations
  verbs:
  - get
  - list
  - watch
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: virtvnc
  name: virtvnc
  namespace: kubevirt
spec:
  ports:
  - port: 8001
    protocol: TCP
    targetPort: 8001
    nodePort: 8001
  selector:
    app: virtvnc
  type: NodePort
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: virtvnc
  namespace: kubevirt
spec:
  replicas: 1
  selector:
    matchLabels:
      app: virtvnc
  template:
    metadata:
      labels:
        app: virtvnc
    spec:
      serviceAccountName: virtvnc
      nodeSelector:
        node-role.kubernetes.io/master: ''
      tolerations: 
      - key: "node-role.kubernetes.io/master"
        operator: "Equal"
        value: ""
        effect: "NoSchedule"
      containers:
      - name: virtvnc
        image: quay.io/samblade/virtvnc:v0.1
        imagePullPolicy: IfNotPresent
        livenessProbe:
          httpGet:
            port: 8001
            path: /
            scheme: HTTP
          failureThreshold: 30
          initialDelaySeconds: 30
          periodSeconds: 10
          successThreshold: 1
          timeoutSeconds: 5

执行如下命令：

kubectl apply -f virtvnc.yaml

查看virtvnc服务端口：

kubectl get svc -n kubevirt virtvnc