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fuse device plugin for Kubernetes

This repository contains implementation of the Kubernetes device plugin alpha feature from version 1.8.

Background

When pod need access /dev/fuse, e.g to mount sshfs or ceph s3fs, containter need to be running in privileged mode to access host's /dev/fuse device, this is not safe.

What make it worse is when the pod need access nvidia GPU devices on the host node.

For example totally 4 GPU devices available on the host node, but only one of them is requested and allocated for the pod, in privileged mode, all of the 4 GPUs are accessible by the application running in the pod container, application like tensorflow will use all the visible GPUs by default, if the other GPUs already allocated for other pod, will cause errors

With this device plugin, pod dont need to run in privileged mode to access /dev/fuse by injecting the fuse device to pod directly, avoiding the potential confilct for GPU.

Usage

Please make sure that the Kubelet has been started with the --feature-gates=DevicePlugins=true before running the device plugin.

Deploy as Daemon Set:

  • kubernete version < 1.16
kubectl create -f fuse-device-plugin.yml
  • kubernete version > 1.16
kubectl create -f fuse-device-plugin-k8s-1.16.yml

Deploy

Refer to fuse-test.yml

spec: 
  containers:
  - ...
    resources:
      limits:
        github.com/fuse: 1