statefulset 中是否可以有 2 个或更多 PVC？

Question

我有一个来自 mongo 的状态集，带有 2 个卷挂载：

          volumeMounts:
            - name: mongo-persistent-storage
              mountPath: /data/db
            - name: mongo-config-storage
              mountPath: /data/configdb

我想知道如何在volumeClaimTemplates中添加第二卷：

  volumeClaimTemplates:
  - metadata:
      name: mongo-persistent-storage
      annotations:
          volume.beta.kubernetes.io/storage-class: "sc-infra"
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 2Gi

Answer 1

只需在您的 volumeClaimTemplates 中附加额外声明即可。示例：

volumeClaimTemplates:
- metadata:
    name: mongo-persistent-storage
    annotations:
       volume.beta.kubernetes.io/storage-class: "sc-infra"
  spec:
    accessModes: [ "ReadWriteOnce" ]
    resources:
      requests:
        storage: 2Gi
- metadata:              # <-- append another claim
    name: mongo-config-storage
  spec:
    storageClassName: sc-infra
    accessModes: ["ReadWriteOnce"]
    resources:
      requests:
        storage: 1Gi

Answer 2

是的，一个有状态集中可以有多个 PVC。