kuberneteskubernetes-podvolumemountmounted-volumes

Why Kubernetes mounted volume files turning into directory inside the pod

I need to copy a zip file from my host machine to pod/container. for that using hostPath volume as follows

    volumeMounts:
    - mountPath: "/tmp/delivery/AB_Database.zip"
      name: db-volume
      subPath: AB_Database.zip
  volumes:
  - name: db-volume
    hostPath:
      path: /delivery/oracle

but when I check inside pod AB_Database.zip is seen as directory.

Solution

  • It's due you have given name in subpath

    volumeMounts:
    - mountPath: "/tmp/delivery/AB_Database.zip"
      name: db-volume
      subPath: AB_Database.zip
  volumes:
  - name: db-volume
    hostPath:
      path: /delivery/oracle

    Subpath work like

    volumeMounts:
- name: test-path
  mountPath: /a/b/c
  subPath: d

    inside c directory you have some files 1.txt, 2.txt thn subpath will rewrite those content in c and create new directory d

    You can check more at : https://kubernetes.io/docs/concepts/storage/volumes/#using-subpath

    if you just want to mount the zip into the POD you can do something like with mountpath

    - mountPath: /var/local/aaa/1.txt
  name: myfile

    https://kubernetes.io/docs/concepts/storage/volumes/#hostpath-fileorcreate-example