使用Kubernetes的多卷坐骑：一个工作，一个不工作

Question

我试图创建一个Kubernetes吊舱与一个容器，其中有两个外部卷安装在它上。My.yml pod文件是：

apiVersion: v1
kind: Pod
metadata:
  name: my-project
  labels:
    name: my-project
spec:
  containers:
    - image: my-username/my-project
      name: my-project
      ports:
        - containerPort: 80
          name: nginx-http
        - containerPort: 443
          name: nginx-ssl-https
      imagePullPolicy: Always
      volumeMounts:
        - mountPath: /home/projects/my-project/media/upload
          name: pd-data
        - mountPath: /home/projects/my-project/backups
          name: pd2-data
  imagePullSecrets:
    - name: vpregistrykey
  volumes:
    - name: pd-data
      persistentVolumeClaim:
        claimName: pd-claim
    - name: pd2-data
      persistentVolumeClaim:
        claimName: pd2-claim

我正在使用持久化卷和持久化卷声明，例如:pv

apiVersion: v1
kind: PersistentVolume
metadata:
  name: pd-disk
  labels:
    name: pd-disk
spec:
  capacity:
    storage: 250Gi
  accessModes:
    - ReadWriteOnce
  gcePersistentDisk:
    pdName: "pd-disk"
    fsType: "ext4"

PVC

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: pd-claim
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 250Gi

我试着从头开始重新创建一切，但什么都没有改变。此外，从pod描述来看，这两个卷似乎都正确地装入了：

$ kubectl describe pod my-project
Name:       my-project
...
Volumes:
  pd-data:
    Type: PersistentVolumeClaim (a reference to a PersistentVolumeClaim in the same namespace)
    ClaimName:  pd-claim
    ReadOnly: false
  pd2-data:
    Type: PersistentVolumeClaim (a reference to a PersistentVolumeClaim in the same namespace)
    ClaimName:  pd2-claim
    ReadOnly: false

任何帮助都很感激。谢了。

Answer 1

Kubernetes文件指出：

卷不能挂载到其他卷或与其他卷有硬链接

我也遇到了同样的问题，在我的例子中，问题是两个卷挂载都有重叠的挂载路径，即都以/var/开头。