kubernetespersistent-volumeskubernetes-pvc

Accessmode in PVC and pod

I have a pvc with accessmode ReadOnlyMany. I created a pod which uses the above pvc and found that I can write to the mounted path. Is this expected behaviour or something to do with the volume plugin that I am using.

Solution

  • Without more information is hard to say what it is.

    The most common mistakes are:

    1) Like @vaqars mentioned in comment it could be lack of readOnly:true element in pod/deployment manifest.

    volumes:
- name: <volumeName>
  persistentVolumeClaim:
    claimName: <claimName>
    readOnly: true

    2) Your PersistentVolume and PersistentVolumeClaim does not have accessMode: ReadOnlyMany.

    3) Your Volume Plugin might not support ReadOnlyMany. Please check here if your Volume Plugin supports this access mode.