[provisioner] StatefulSet with empty selector are blocked #285
Description
Describe the problem/challenge you have
When creating a Statefulset with a persistent volume claim, kind (and probably other distributions) adds an empty selector to the PersistentVolumeClaim:
Here is the storage class
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
annotations:
cas.openebs.io/config: |
- name: StorageType
value: "hostpath"
- name: BasePath
value: "/var/openebs/local"
meta.helm.sh/release-name: openebs
meta.helm.sh/release-namespace: openebs
openebs.io/cas-type: local
creationTimestamp: "2025-09-26T07:13:30Z"
labels:
app.kubernetes.io/managed-by: Helm
name: openebs-hostpath
resourceVersion: "709"
uid: a31abb9c-5f61-4145-ae31-8a683122022a
provisioner: openebs.io/local
reclaimPolicy: Delete
volumeBindingMode: WaitForFirstConsumerThe StatefulSet with volumeClaimTemplate:
spec:
volumeClaimTemplate:
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 10Gi
storageClassName: openebs-hostpathThe created PersistentVolumeClaim
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 10Gi
selector: {} # Here is the culprit
storageClassName: openebs-hostpath
volumeMode: FilesystemThe volume then stay in Pending state. When looking at the logs of the openebs-localpv-provisioner I can see the following:
error syncing claim "f9083653-8bfc-49fa-b700-a60460c1ab8a": failed to provision volume with StorageClass "openebs-hostpath": claim.Spec.Selector is not supported
When creating the PersistentVolumeClaim manually I don't have any issues because I don't set the selector: {}
Describe the solution you'd like
Instead of doing a == nil an empty check must be done
Anything else you would like to add:
With a Kyverno policy it works but it is ugly
Environment:
- OpenEBS version 4.3.0
- Kubernetes version (use
kubectl version):
Client Version: v1.33.0
Kustomize Version: v5.6.0
Server Version: v1.32.2
- Cloud provider or hardware configuration:
- OS (e.g:
cat /etc/os-release): - kernel (e.g:
uname -a): - others: