persistentvolumeclaim not found in kubernetes

Question

Currently i try to implement PersistentVolume in my yaml file . I read a lot of documentation on internet and i dont understand why when i go to the dashboard pod i've this message

persistentvolumeclaim "karaf-conf" not found

pod.yaml

apiVersion: v1
kind: Pod
metadata:
  name: karafpod
spec:
  containers:
  - name: karaf
    image: xxx/karaf:ids-1.1.0
    volumeMounts:
    - name: karaf-conf-storage
      mountPath: "/apps/karaf/etc"
  volumes:
    - name: karaf-conf-storage
      persistentVolumeClaim:
        claimName: karaf-conf-claim

PersistentVolumeClaimKaraf.yml

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: karaf-conf-claim
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Mi

PersistentVolume.yaml

kind: PersistentVolume
apiVersion: v1
metadata:
  name: karaf-conf
  labels:
    type: local
spec:
  capacity:
    storage: 100Mi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/apps/karaf/etc"

You will find below the result of the command kubectl get pv

NAME                             CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS        CLAIM                         STORAGECLASS   REASON    AGE
karaf-conf                    100Mi      RWO            Retain           Terminating   default/karaf-conf-claim                            17h
karaf-conf-persistentvolume   100Mi      RWO            Retain           Released      default/karaf-conf                                  1h

kubectl get pvc

NAME                  STATUS        VOLUME          CAPACITY   ACCESS MODES   STORAGECLASS   AGE
karaf-conf-claim   Terminating   karaf-conf   10Mi       RWO            manual         17h

Answer 1

With hostPath, you don't need PersistentVolume or PersistentVolumeClaim objects, so this might be easier depending on your need:

# file: pod.yaml
apiVersion: v1
kind: Pod
metadata:
  name: karafpod
spec:
  containers:
  - name: karaf
    image: xxx/karaf:ids-1.1.0
    volumeMounts:
    - name: karaf-conf-storage
      mountPath: "/apps/karaf/etc"  # Path mounted in container

  # Use hostPath here
  volumes:
    - name: karaf-conf-storage
      hostPath:
        path: "/apps/karaf/etc" # Path from the host

Then delete the other two .yaml files PersistentVolumeClaimKaraf.yml and PersistentVolume.yml

For official documentation, see: https://kubernetes.io/docs/concepts/storage/volumes/#hostpath

Edit: Noticed that spec.containers.VolumeMounts.mountPath and spec.containers.volumes.hostPath.path from the original post were the same, so added comments in yaml to clarify purpose of each.