How to assign pods to PVCs in a statefulset without a volumeClaimTemplate

General Discussions
1

So i try to set each pod in the StatefulSet should be manually assigned a specific PVC without use volumeClaimTemplates.

I use the petch for each pods and statefulset also but there are not working.

So this is my pvc.yaml file code :

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: busybox-pvc-0
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: busybox-pvc-1
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: busybox-pvc-2
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi

and this is my statefullset.yaml code :

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: busybox
spec:
  serviceName: "busybox-service"
  replicas: 3
  selector:
    matchLabels:
      app: busybox
  template:
    metadata:
      labels:
        app: busybox
    spec:
      containers:
      - name: busybox
        image: busybox
        command: ["/bin/sh", "-c", "sleep 3600"]
        volumeMounts:
        - name: busybox-storage
          mountPath: /mnt/data
      volumes:
      - name: busybox-storage
        persistentVolumeClaim:
          claimName: busybox-pvc-0

and i try to use “petch” like this but there are get error like this:

dev_2@Tadhak-dev-02:~/Backup/Opensearch/Stateful_PVC$ minikube kubectl -- patch pod busybox-0 --type='json' -p '[{"op": "replace", "path": "/
spec/volumes/0/persistentVolumeClaim/claimName", "value": "busybox-pvc-0"}]'
The request is invalid: the server rejected our request due to an error in our request
dev_2@Tadhak-dev-02:~/Backup/Opensearch/Stateful_PVC$ minikube kubectl -- patch pod busybox-1 --type='json' -p '[{"op": "replace", "path": "/spec/volumes/0/persistentVolumeClaim/claimName", "value": "busybox-pvc-1"}]'
The Pod "busybox-1" is invalid: spec: Forbidden: pod updates may not change fields other than `spec.containers[*].image`,`spec.initContainers[*].image`,`spec.activeDeadlineSeconds`,`spec.tolerations` (only additions to existing tolerations),`spec.terminationGracePeriodSeconds` (allow it to be set to 1 if it was previously negative)
  core.PodSpec{
  	Volumes: []core.Volume{
  		{
  			Name: "busybox-storage",
  			VolumeSource: core.VolumeSource{
  				... // 7 identical fields
  				ISCSI:     nil,
  				Glusterfs: nil,
  				PersistentVolumeClaim: &core.PersistentVolumeClaimVolumeSource{
- 					ClaimName: "busybox-pvc-0",
+ 					ClaimName: "busybox-pvc-1",
  					ReadOnly:  false,
  				},
  				RBD:     nil,
  				Quobyte: nil,
  				... // 18 identical fields
  			},
  		},
  		{Name: "kube-api-access-jzfbk", VolumeSource: {Projected: &{Sources: {{ServiceAccountToken: &{ExpirationSeconds: 3607, Path: "token"}}, {ConfigMap: &{LocalObjectReference: {Name: "kube-root-ca.crt"}, Items: {{Key: "ca.crt", Path: "ca.crt"}}}}, {DownwardAPI: &{Items: {{Path: "namespace", FieldRef: &{APIVersion: "v1", FieldPath: "metadata.namespace"}}}}}}, DefaultMode: &420}}},
  	},
  	InitContainers: nil,
  	Containers:     {{Name: "busybox", Image: "busybox", Command: {"/bin/sh", "-c", "sleep 3600"}, VolumeMounts: {{Name: "busybox-storage", MountPath: "/mnt/data"}, {Name: "kube-api-access-jzfbk", ReadOnly: true, MountPath: "/var/run/secrets/kubernetes.io/serviceaccount"}}, ...}},
  	... // 30 identical fields
  }

So how to do this working for set each pod in the StatefulSet should be manually assigned a specific PVC without use volumeClaimTemplates.

busybox-0 → busybox-pvc-0
busybox-1 → busybox-pvc-1
busybox-2 → busybox-pvc-2

Kubernetes version:
Client Version: v1.31.0
Kustomize Version: v5.4.2
Server Version: v1.31.0