kubernetes基于StorageClass的NFS动态卷

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NFS搭建略..

创建nfs文件

安装部署

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mkdir /opt/k8s-nfs-storage
echo "/opt/k8s-nfs-storage *(rw,no_root_squash,no_all_squash,sync)" > /etc/exports
exportfs  -vr

所需要的yaml文件github：
修改deployment文件并部署deployment.yaml
需要修改的地方只有NFS服务器所在的IP地址（192.168.7.206），以及NFS服务器共享的路径（/opt/k8s-nfs-storage），两处都需要修改为你实际的NFS服务器和共享目录

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kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  name: nfs-client-provisioner
spec:
  replicas: 1
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: nfs-client-provisioner
    spec:
      serviceAccountName: nfs-client-provisioner
      containers:
        - name: nfs-client-provisioner
          image: 192.168.19.111/gc/nfs-client-provisioner:latest
          volumeMounts:
            - name: nfs-client-root
              mountPath: /persistentvolumes
          env:
            - name: PROVISIONER_NAME
              value: idcsec.lan/nfs
            - name: NFS_SERVER
              value: 192.168.7.206
            - name: NFS_PATH
              value: /opt/k8s-nfs-storage
      volumes:
        - name: nfs-client-root
          nfs:
            server: 192.168.7.206
            path: /opt/k8s-nfs-storage
---
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
    # replace with namespace where provisioner is deployed
    namespace: default
roleRef:
  kind: Role
  name: leader-locking-nfs-client-provisioner
  apiGroup: rbac.authorization.k8s.io

修改StorageClass文件并部署class.yaml
此处可以不修改，或者修改provisioner的名字，需要与上面的deployment的PROVISIONER_NAME名字一致。

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apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: k8s-nfs-storage
provisioner: idcsec.lan/nf

授权
RBAC授权文件在auth目录下面
如果您的集群启用了RBAC，必须授权provisioner。
设置 k8s-nfs-storage作为默认存储类

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kubectl patch storageclass  k8s-nfs-storage -p '{"metadata": {"annotations":{"storageclass.kubernetes.io/is-default-class":"true"}}}'

crt
实例：

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apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
  name: k8sapp
spec:
  serviceName: "k8sapp"
  replicas: 1
  volumeClaimTemplates:
  - metadata:
      name: test 
      annotations:
        volume.beta.kubernetes.io/storage-class: "k8s-nfs-storage"
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 2Gi

crt