部署NFS-Client Provisioner的初衷，就是為了根據(jù)PVC的需求自動(dòng)創(chuàng)建符合要求的PV。
首先，必須擁有自己的NFS Server, 而且k8s集群能夠正常訪問之。

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之后，在k8s master上應(yīng)用以下yaml文件：
1 RBAC.yaml

apiVersion: v1
kind: ServiceAccount
metadata:
  name: nfs-client-provisioner
  # replace with namespace where provisioner is deployed
  namespace: nfs-client-provisioner
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: nfs-client-provisioner-runner
rules:
  - apiGroups: [""]
    resources: ["persistentvolumes"]
    verbs: ["get", "list", "watch", "create", "delete"]
  - apiGroups: [""]
    resources: ["persistentvolumeclaims"]
    verbs: ["get", "list", "watch", "update"]
  - apiGroups: ["storage.k8s.io"]
    resources: ["storageclasses"]
    verbs: ["get", "list", "watch"]
  - apiGroups: [""]
    resources: ["events"]
    verbs: ["create", "update", "patch"]
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: run-nfs-client-provisioner
subjects:
  - kind: ServiceAccount
    name: nfs-client-provisioner
    # replace with namespace where provisioner is deployed
    namespace: nfs-client-provisioner
roleRef:
  kind: ClusterRole
  name: nfs-client-provisioner-runner
  apiGroup: rbac.authorization.k8s.io
---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: leader-locking-nfs-client-provisioner
    # replace with namespace where provisioner is deployed
  namespace: nfs-client-provisioner
rules:
  - apiGroups: [""]
    resources: ["endpoints"]
    verbs: ["get", "list", "watch", "create", "update", "patch"]
---
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: leader-locking-nfs-client-provisioner
subjects:
  - kind: ServiceAccount
    name: nfs-client-provisioner
    # replace with namespace where provisioner is deployed
    namespace: nfs-client-provisioner
roleRef:
  kind: Role
  name: leader-locking-nfs-client-provisioner
  apiGroup: rbac.authorization.k8s.io

2 Deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nfs-client-provisioner
  labels:
    app: nfs-client-provisioner
  # replace with namespace where provisioner is deployed
  namespace: default
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nfs-client-provisioner
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app: nfs-client-provisioner
  template:
    metadata:
      labels:
        app: nfs-client-provisioner
    spec:
      serviceAccountName: nfs-client-provisioner
      containers:
        - name: nfs-client-provisioner
          image: quay.io/external_storage/nfs-client-provisioner:latest
          volumeMounts:
            - name: nfs-client-root
              mountPath: /persistentvolumes
          env:
            - name: PROVISIONER_NAME
              value: zbb.test/nfs
            - name: NFS_SERVER
              value: 10.0.0.31
            - name: NFS_PATH
              value: /netshare
      volumes:
        - name: nfs-client-root
          nfs:
            server: 10.0.0.31
            path: /netshare

注意修改env和volumes中關(guān)于NFS Server的參數(shù)

3 storageclass.yaml

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: managed-nfs-storage
provisioner: zbb.test/nfs # or choose another name, must match deployment's env PROVISIONER_NAME'
parameters:
  archiveOnDelete: "false"

注意：
1） storageclass中的provisioner必須與deployment中的定義一致!
2） 如果不把nfs-client-provisioner部署到默認(rèn)名稱空間中，需要將“# replace with namespace where provisioner is deployed”標(biāo)注的namespace全部改為目標(biāo)namespace名稱
3）Storagelass的名稱可以修改成自己想要的

查看已部署的Storagelass:

# kubectl get storageclass
# kubectl get cs

(參考<2>)將managednfs-storage這個(gè)storageclass設(shè)置為kubernetes的默認(rèn)存儲(chǔ)后端：

# kubectl patch storageclass managed-nfs-storage -p '{"metadata": {"annotations":{"storageclass.kubernetes.io/is-default-class":"true"}}}'

由此， 部署完成， 下面給出個(gè)測(cè)試示例：
4 test-pvc.yaml

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: test-claim
  annotations:
    volume.beta.kubernetes.io/storage-class: "managed-nfs-storage"
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 1Mi

5 test-pod.yaml

kind: Pod
apiVersion: v1
metadata:
  name: test-pod
spec:
  containers:
  - name: test-pod
    image: busybox:1.24
    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

到此， 可以查詢測(cè)試結(jié)果，測(cè)試完成
此后就可以使用NFS動(dòng)態(tài)供給PV啦，不需要手工創(chuàng)建咯

測(cè)試平臺(tái)：kubernetes 1.16.3
OS: CentOS Linux release 7.7.1908 (Core)

參考資料：
<1> https://github.com/kubernetes-incubator/external-storage/tree/master/nfs-client
<2> https://www.cnblogs.com/robinunix/p/11133032.html

在此向參考資料的作者表示感謝！！

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