kubernetes - PV和PVC中需要storageClassName

Question

我创建的 PV 如下:

apiVersion: v1
kind: PersistentVolume
metadata:
  name: foo-pv
spec:
  storageClassName: "my-storage"
  claimRef:
    name: foo-pvc
    namespace: foo

为什么要在PV中给出storageClassName？ Storage类创建PV时，为什么要在PV中赋予storageClassName？

谁能帮我理解一下？

Answer 1

根据 Kubernetes 官方文档:

为什么要在PV中给出storageClassName？

Each StorageClass contains the fields provisioner, parameters, andreclaimPolicy, which are used when a PersistentVolume belonging tothe class needs to be dynamically provisioned.

The name of a StorageClass object is significant, and is how users canrequest a particular class. Administrators set the name and otherparameters of a class when first creating StorageClass objects, andthe objects cannot be updated once they are created.

Storage类创建PV时，为什么要在PV中赋予storageClassName？

A PersistentVolume (PV) is a piece of storage in the cluster that hasbeen provisioned by an administrator or dynamically provisioned usingStorage Classes. It is a resource in the cluster just like a node is a cluster resource.

Cluster administrators need to be able to offer a variety ofPersistentVolumes that differ in more ways than size and access modes,without exposing users to the details of how those volumes areimplemented. For these needs, there is the StorageClass resource.

想了解更多Storage类资源，请关注this link , 或 this one了解有关持久卷的更多信息。