查看“︁Kubernetes storage class”︁的源代码

=NFS =
<syntaxhighlight lang="bash">
apt install nfs-common

# try to mount it
mount -t nfs -o vers=3,nolock,proto=tcp,noresvport 10.19.31.01:/cfs-xxx /mnt/tmpnfs
</syntaxhighlight>

<syntaxhighlight lang="bash">
sudo ctr images pull registry.k8s.io/sig-storage/nfsplugin:v4.6.0
sudo ctr images pull registry.k8s.io/sig-storage/csi-provisioner:v3.6.2
sudo ctr images pull registry.k8s.io/sig-storage/csi-snapshotter:v6.3.2
sudo ctr images pull registry.k8s.io/sig-storage/livenessprobe:v2.11.0
sudo ctr images pull registry.k8s.io/sig-storage/csi-node-driver-registrar:v2.9.1
sudo ctr images pull registry.k8s.io/sig-storage/snapshot-controller:v6.3.2

sudo ctr images export nfs-csi-4.6.0.tar registry.k8s.io/sig-storage/nfsplugin:v4.6.0 registry.k8s.io/sig-storage/csi-provisioner:v3.6.2 registry.k8s.io/sig-storage/csi-snapshotter:v6.3.2 registry.k8s.io/sig-storage/livenessprobe:v2.11.0 registry.k8s.io/sig-storage/csi-node-driver-registrar:v2.9.1 registry.k8s.io/sig-storage/snapshot-controller:v6.3.2

wget https://github.com/kubernetes-csi/csi-driver-nfs/archive/refs/tags/v4.6.0.tar.gz
tar -zxvf v4.6.0.tar.gz
helm install csi-derver-nfs ./csi-driver-nfs -n kube-system
</syntaxhighlight>

Create a storage class:
<syntaxhighlight lang="bash">
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: nfs-csi
provisioner: nfs.csi.k8s.io
parameters:
  server: *********
  share: /cfs-*****
reclaimPolicy: Delete
volumeBindingMode: Immediate
mountOptions:
  - nfsvers=3
  - nolock
  - proto=tcp
  - noresvport
</syntaxhighlight>

<syntaxhighlight lang="bash">
kubectl apply -f nfs-storageclass.yaml
kubectl get storageclass
NAME      PROVISIONER      RECLAIMPOLICY   VOLUMEBINDINGMODE   ALLOWVOLUMEEXPANSION   AGE
nfs-csi   nfs.csi.k8s.io   Delete          Immediate           false                  5s
</syntaxhighlight>

Test use nfs:
<syntaxhighlight lang="bash">
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: pvc-nfs-dynamic
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 1Gi
  storageClassName: nfs-csi
</syntaxhighlight>

<syntaxhighlight lang="bash">
kubectl get pvc
NAME              STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   VOLUMEATTRIBUTESCLASS   AGE
pvc-nfs-dynamic   Bound    pvc-25aef236-bc5b-413a-9cb6-5616ad060f96   1Gi        RWX            nfs-csi        <unset>                 7s
</syntaxhighlight>

Set nfs csi as default storage class:
<syntaxhighlight lang="bash">
kubectl patch storageclass nfs-csi -p '{"metadata": {"annotations":{"storageclass.kubernetes.io/is-default-class":"true"}}}'
</syntaxhighlight>

=OpenEBS LocalPV=

Best for: Single-node clusters requiring features like snapshots, backups, or multi-disk management<ref>https://openebs.io/docs/quickstart-guide/installation</ref>.
Why:

* Extends local storage with enterprise features.
* Supports ReadWriteOnce (RWO) and integrates with Velero for backups.

<syntaxhighlight lang="bash">
helm repo add openebs https://openebs.github.io/openebs
helm repo update

helm install openebs --namespace openebs openebs/openebs --set engines.replicated.mayastor.enabled=false --create-namespace
</syntaxhighlight>

Verify:

<syntaxhighlight lang="cpp">
$ helm ls -n openebs
NAME   	NAMESPACE	REVISION	UPDATED                                STATUS  	CHART        	APP VERSION
openebs	openebs  	1       	2025-04-18 15:01:20.055693605 +0000 UTCdeployed	openebs-4.2.0	4.2.0

$ kubectl get pods -n openebs
NAME                                              READY   STATUS    RESTARTS   AGE
openebs-localpv-provisioner-699ddcb856-b5qn7      1/1     Running   0          60s
openebs-lvm-localpv-controller-86b4d6dcff-lj8f9   5/5     Running   0          60s
openebs-lvm-localpv-node-pvlhj                    2/2     Running   0          60s
openebs-zfs-localpv-controller-5b7846bf9-l4tg8    5/5     Running   0          60s
openebs-zfs-localpv-node-jp9x5                    2/2     Running   0          60s

$ kubectl get storageclass
NAME               PROVISIONER        RECLAIMPOLICY   VOLUMEBINDINGMODE      ALLOWVOLUMEEXPANSION   AGE
openebs-hostpath   openebs.io/local   Delete          WaitForFirstConsumer   false                  86s
</syntaxhighlight>

set to default:

<syntaxhighlight lang="bash">
kubectl patch storageclass openebs-hostpath -p '{"metadata": {"annotations":{"storageclass.kubernetes.io/is-default-class":"true"}}}'
</syntaxhighlight>

[[Category:Linux/Unix]]
[[Category:Kubernetes]]