NFS存储-动态创建 PVC PV

1. 搭建nfs服务器

nfs搭建过程查看linux中的nfs文档

2. 创建ServiceAccount

Kubernetes集群大部分是基于 RBAC 的权限控制，所以创建一个一定权限的 ServiceAccount 与后面要创建的 “NFS Provisioner” 绑定，赋予一定的权限。

vim nfs-rbac.yaml
 
# 内容
kind: ServiceAccount
apiVersion: v1
metadata:
  name: 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
    namespace: default
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
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
    namespace: default
roleRef:
  kind: Role
  name: leader-locking-nfs-client-provisioner
  apiGroup: rbac.authorization.k8s.io

3. 部署 NFS Provisioner

vim nfs-provisioner-deploy.yaml
 
# 内容
kind: Deployment
apiVersion: apps/v1
metadata:
  name: nfs-client-provisioner
  namespace: default
  labels:
    app: nfs-client-provisioner
spec:
  replicas: 1
  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: gmoney23/nfs-client-provisioner 
          volumeMounts:
            - name: nfs-client-root
              mountPath: /persistentvolumes
          env:
            - name: PROVISIONER_NAME
              value: nfs-client
            - name: NFS_SERVER
              value: 172.16.109.178  # nfs服务端的IP
            - name: NFS_PATH
              value: /data # 挂载目录
      volumes:
        - name: nfs-client-root
          nfs:
            server: 172.16.109.178
            path: /data

4. 创建 NFS StorageClass

vim nfs-storage.yaml
 
# 内容
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: nfs-storage
  annotations:
    storageclass.kubernetes.io/is-default-class: "true"
provisioner: nfs-client
parameters:
  archiveOnDelete: "true"

至此，StorageClass 创建完成

5. 接下来创建一个 PVC

vim test-pvc.yaml
 
# 内容
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: test-pvc
spec:
  storageClassName: nfs-storage
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi