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Claims as volumes

To enable pods to access storage resources, configure Persistent Volume Claims (PVCs) as volumes. By mounting the claim to the host and into the pod, the cluster locates the backing PersistentVolume (PV) in the same namespace, ensuring the workload can read and write data effectively.

Claims use the same conventions as volumes when requesting storage with specific access modes.

Claims, such as pods, can request specific quantities of a resource. In this case, the request is for storage. The same resource model applies to volumes and claims.

Mount volume to the host and into the pod example

kind: Pod
apiVersion: v1
metadata:
  name: mypod
spec:
  containers:
    - name: myfrontend
      image: dockerfile/nginx
      volumeMounts:
      - mountPath: "/var/www/html"
        name: mypd
  volumes:
    - name: mypd
      persistentVolumeClaim:
        claimName: myclaim
# ...

where:

volumeMounts.mountPath: Specifies the path to mount the volume inside the pod.
volumeMounts.name: Specifies the name of the volume to mount. Do not mount to the container root, /, or any path that is the same in the host and the container. This can corrupt your host system if the container is sufficiently privileged, such as the host /dev/pts files. Using /host is a safe option for mounting the host.
persistentVolumeClaim.claimName: Specifies the name of the PVC, that exists in the same namespace, to use.