kubernetes 容器内的 VirtualBox

Question

Headless VirtualBox 在 Docker 容器内成功运行s

docker run --device=/dev/vboxdrv:/dev/vboxdrv my-vb

我需要在 Kubernetes 上运行这个镜像，我得到：

VBoxHeadless: Error -1909 in suplibOsInit!
VBoxHeadless: Kernel driver not accessible

Kubernetes 对象：

metadata:
  name: vbox
  labels:
    app: vbox
spec:
  selector:
    matchLabels:
      app: vbox
  template:
    metadata:
      labels:
        app: vbox
    spec:
      securityContext:
        runAsUser: 0
      containers:
      - name: vbox-vm
        image: my-vb
        imagePullPolicy: 'Always'
        ports:
        - containerPort: 6666

        volumeMounts:
        - mountPath: /root/img.vdi
          name: img-vdi

        - mountPath: /dev/vboxdrv
          name: vboxdrv

      volumes:
      - name: img-vdi
        hostPath:
          path: /root/img.vdi
          type: File

      - name: vboxdrv
        hostPath:
          path: /dev/vboxdrv
          type: CharDevice

这个图像运行s 在 Docker 中所以一定是 Kubernetes 配置中的问题。

Answer 1

这项工作的配置需要稍作修改：

metadata:
  name: vbox
  labels:
    app: vbox
spec:
  selector:
    matchLabels:
      app: vbox
  template:
    metadata:
      labels:
        app: vbox
    spec:
      securityContext:
        runAsUser: 0
      containers:
      - name: vbox-vm
        image: my-vb
        imagePullPolicy: 'Always'
        securityContext:  # << added
          privileged: true

        ports:
        - containerPort: 6666

        volumeMounts:
        - mountPath: /root/img.vdi
          name: img-vdi

        - mountPath: /dev/vboxdrv
          name: vboxdrv

      volumes:
      - name: img-vdi
        hostPath:
          path: /root/img.vdi
          type: File

      - name: vboxdrv
        hostPath:
          path: /dev/vboxdrv
          type: CharDevice

要能够运行特权容器，您需要：

kube-apiserver 运行 --allow-privileged
kubelet（所有可能有这个容器的主机）运行 --allow-privileged=true

在 https://kubernetes.io/docs/concepts/workloads/pods/pod/#privileged-mode-for-pod-containers

一旦它工作正常通过PodSecurityPolicy

kubernetes 容器内的 VirtualBox

VirtualBox inside kubernetes container

virtualbox

kubernetes