在 kubernetes 中使用没有特权安全上下文的双向挂载传播

Question

我正在实施对使用双向装载传播的 CSIDriver 的支持。这要求容器是Privileged，但是在这个项目中，我们不允许使用特权容器。

还有其他方法吗？我试过使用 SYS_ADMIN 功能，但没有用。

    - name: spiffe-csi-driver
        image: ghcr.io/spiffe/spiffe-csi-driver:0.1.0
        imagePullPolicy: IfNotPresent
        args: [
          "-workload-api-socket-dir", "/spire-agent-socket",
          "-csi-socket-path", "/spiffe-csi/csi.sock",
        ]
        env:
          - name: MY_NODE_NAME
            valueFrom:
              fieldRef:
                fieldPath: spec.nodeName
        volumeMounts:
          - mountPath: /spire-agent-socket
            name: spire-agent-socket
            readOnly: true
          - mountPath: /spiffe-csi
            name: spiffe-csi-socket-dir
          # The volume containing mount points for containers.
          - mountPath: /var/lib/kubelet/pods
            mountPropagation: Bidirectional
            name: mountpoint-dir
        securityContext:
          privileged: true # need to remove
          # capabilities: # this didn't work 
          #   add:
          #   - SYS_ADMIN

Answer 1

根据 K8s official documentation:

it is allowed only in privileged containers.

在 kubernetes 中使用没有特权安全上下文的双向挂载传播

Using Mount Propagation bidirectional without Privileged Security context in kubernetes

kubernetes

permissions

containers

csi-driver