K8s 安装 NFS Subdir External Provisioner

K8s
  • NFS subdir external provisioner is an automatic provisioner that use your existing and already configured NFS server to support dynamic provisioning of Kubernetes Persistent Volumes via Persistent Volume Claims. Persistent volumes are provisioned as ${namespace}-${pvcName}-${pvName}

1. 环境准备

2. 安装 Provisioner

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
$ helm repo add nfs-subdir-external-provisioner https://kubernetes-sigs.github.io/nfs-subdir-external-provisioner/
$ helm show values nfs-subdir-external-provisioner/nfs-subdir-external-provisioner
$ helm install nfs-subdir-external-provisioner nfs-subdir-external-provisioner/nfs-subdir-external-provisioner \
 --set nfs.server=10.4.7.201 \
 --set nfs.path=/data/nfs \
 --set image.repository=registry.cn-hangzhou.aliyuncs.com/iuxt/nfs-subdir-external-provisioner

# 查看
$ kubectl get pod nfs-subdir-external-provisioner-68fff55cc9-s7msb -o yaml
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nfs-subdir-external-provisioner
  name: nfs-subdir-external-provisioner-68fff55cc9-s7msb
spec:
  containers:
  - env:
    # 必须与class.yaml中的provisioner的名称一致
    - name: PROVISIONER_NAME
      value: cluster.local/nfs-subdir-external-provisioner
    # NFS服务器的ip地址
    - name: NFS_SERVER
      value: 10.4.7.201
    # 共享挂载目录
    - name: NFS_PATH
      value: /data/nfs
    image: registry.cn-hangzhou.aliyuncs.com/iuxt/nfs-subdir-external-provisioner:v4.0.2
    name: nfs-subdir-external-provisioner
  volumes:
  - name: nfs-subdir-external-provisioner-root
    nfs:
      path: /data/nfs
      server: 10.4.7.201
......
$ kubectl get sc nfs-client -o yaml
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  annotations:
    meta.helm.sh/release-name: nfs-subdir-external-provisioner
    meta.helm.sh/release-namespace: default
  name: nfs-client
provisioner: cluster.local/nfs-subdir-external-provisioner
allowVolumeExpansion: true
parameters:
  archiveOnDelete: "true"
reclaimPolicy: Delete
volumeBindingMode: Immediate
......

3. 验证

  • test-claim.yaml
1
2
3
4
5
6
7
8
9
10
11
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: test-claim
spec:
  storageClassName: nfs-client
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 1Mi
  • test-pod.yaml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
kind: Pod
apiVersion: v1
metadata:
  name: test-pod
spec:
  containers:
  - name: test-pod
    image: busybox:stable
    command:
      - "/bin/sh"
    args:
      - "-c"
      - "touch /mnt/SUCCESS && exit 0 || exit 1"
    volumeMounts:
      - name: nfs-pvc
        mountPath: "/mnt"
  restartPolicy: "Never"
  volumes:
    - name: nfs-pvc
      persistentVolumeClaim:
        claimName: test-claim
  • 验证
1
2
3
4
5
6
7
8
9
$ kubectl get pvc
NAME         STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   AGE
test-claim   Bound    pvc-1787429e-542b-451f-8a48-7b158bc4ccab   1Mi        RWX            nfs-client     2h
$ kubectl get pod test-pod
NAME       READY   STATUS      RESTARTS   AGE
test-pod   0/1     Completed   0          2h
$ ll /data/nfs/default-test-claim-pvc-1787429e-542b-451f-8a48-7b158bc4ccab/
total 0
-rw-r--r-- 1 nobody nogroup 0 Oct  7 15:21 SUCCESS

参考