在 GKE 中，我们可以通过 PVC 对象创建持久卷时指定区域或区域吗？

Question

我希望我的持久卷驻留在一个特定的区域，比如 us-central1-a，但我想通过 PVC 部署它，而不是直接创建 PV 的对象。这在 GKE 中可行吗？

Answer 1

To enable dynamic provisioning of regional persistent disks, create a StorageClass with the replication-type parameter, and specify zone constraints in allowedTopologies.

For example, the following manifest describes a StorageClass named regionalpd-storageclass that uses standard persistent disks and that replicates data to the europe-west1-b and europe-west1-c zones:

kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
  name: regionalpd-storageclass
provisioner: kubernetes.io/gce-pd
parameters:
  type: pd-standard
  replication-type: regional-pd
volumeBindingMode: WaitForFirstConsumer
allowedTopologies:
- matchLabelExpressions:
  - key: topology.kubernetes.io/zone
    values:
    - europe-west1-b
    - europe-west1-c

Create a PersistentVolumeClaim object, and use the storageClassName field to refer to the StorageClass you created. For example, the following manifest creates a PersistentVolumeClaim named regional-pvc and references the regionalpd-storageclass

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: regional-pvc
  namespace: testns
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 200Gi
  storageClassName: regionalpd-storageclass

The following manifest is an example Pod using the previously created PersistentVolumeClaim:

kind: Pod
apiVersion: v1
metadata:
  name: task-pv-pod
spec:
  volumes:
    - name: task-pv-storage
      persistentVolumeClaim:
        claimName: regional-pvc
  containers:
    - name: task-pv-container
      image: nginx
      ports:
        - containerPort: 80
          name: "http-server"
      volumeMounts:
        - mountPath: "/usr/share/nginx/html"
          name: task-pv-storage

您可以按照这个 guide 来操作，它会向您展示如何做到这一点

Answer 2

似乎无法为 PV 或 PVC 指定区域，但可以在 StorageClass 上设置 volumeBindingMode: WaitForFirstConsumer 以确保 PV 与使用它的 pod 位于同一区域.然后可以使用 pod 上的 nodeSelector 选择区域。

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: ssd
parameters:
  type: pd-ssd
provisioner: kubernetes.io/gce-pd
reclaimPolicy: Delete
volumeBindingMode: WaitForFirstConsumer
allowVolumeExpansion: true

聚氯乙烯：

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: db
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 200Gi
  storageClassName: ssd

连播：

kind: Pod
apiVersion: v1
metadata:
  name: foo
spec:
  nodeSelector:
    failure-domain.beta.kubernetes.io/zone: us-central1-a
  containers:
    ...

在 GKE 中，我们可以通过 PVC 对象创建持久卷时指定区域或区域吗？

In GKE, can we specify the zone or region of a persistent volume when we create it through a PVC object

google-kubernetes-engine

gke-networking