如何更改现有持久卷的存储类? [英] How do I change the storage class of existing persistent volumes?

问题描述

我在Google Kubernetes Engine中运行的Kubernetes中有一堆与PVC绑定的标准PV.我想将其存储类更改为SSD.我该如何实现?

I have a bunch of standard PVs bound to PVCs in Kubernetes running in Google Kubernetes Engine. I want to change their storage class to SSD. How do I achieve that?

推荐答案

如果我对您的理解正确，那么您想更改PV的类型，问题不是"if"而是"where".

If I understood you correctly, you would like to change a type for your PVs, and the question is not "if" but "where".

PVC，PV和StorageClass之间的关系非常简单.

The relations between PVC, PV and StorageClass is very simple.

PVC仅要求存储特定的类型(在storageClassName下指定)和大小(在PV中列出).

PVC is just request for a storage of particular type (specified under storageClassName ) and size (that is listed in PV) .

kind: PersistentVolumeClaim
spec:
...
  resources:
    requests:
      storage: 8Gi
  storageClassName: slow

PV在spec:中具有storageClassName.

kind: PersistentVolume
...
spec:
  capacity:
    storage: 10Gi
...
  storageClassName: slow

storageClass具有type.

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: slow
provisioner: kubernetes.io/gce-pd
parameters:
  type: pd-standard
  fstype: ext4
  replication-type: none

# type: pd-standard or pd-ssd. Default: pd-standard

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