[英]How to prevent two volume claims to claim the same volume on Kubernetes?
在GKE上的Kubernetes集群上,我有以下持久性卷声明(PVC):
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: registry
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 100Gi
和:
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: postgresql-blobs
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 100Gi
除此之外,我还定义了以下持久性卷:
kind: PersistentVolume
apiVersion: v1
metadata:
name: pv0003
spec:
capacity:
storage: 100Gi
accessModes:
- ReadWriteOnce
- ReadOnlyMany
gcePersistentDisk:
pdName: registry
fsType: ext4
现在,两个索赔声称相同的数量:
bronger:~$ kubectl describe pvc postgresql-blobs registry
Name: postgresql-blobs
Namespace: default
Status: Bound
Volume: pv0003
Labels: <none>
Capacity: 100Gi
Access Modes: RWO,ROX
Name: registry
Namespace: default
Status: Bound
Volume: pv0003
Labels: <none>
Capacity: 100Gi
Access Modes: RWO,ROX
有趣的是,PV只知道其中一项索赔:
bronger:~$ kubectl describe pv pv0003
Name: pv0003
Labels: <none>
Status: Bound
Claim: default/postgresql-blobs
Reclaim Policy: Retain
Access Modes: RWO,ROX
Capacity: 100Gi
Message:
Source:
Type: GCEPersistentDisk (a Persistent Disk resource in Google Compute Engine)
PDName: registry
FSType: ext4
Partition: 0
ReadOnly: false
我怎样才能防止这种情况发生?
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