K8S 使用简单的NFS 作为 持久存储的 StorageClass 的简单测试.

Study From https://jimmysong.io/kubernetes-handbook/practice/using-nfs-for-persistent-storage.html

1. 机器不翻墙 所以手工download 了image 来处理.

需要的images

docker search nfs-client-provisioner 
比较简单的处理方法:
docker pull registry.docker-cn.com/jmgao1983/nfs-client-provisioner

docker tag registry.docker-cn.com/jmgao1983/nfs-client-provisioner nfs-client-provisioner:1.0 # 为了简单便于测试....

2. 在本机安装NFS 以及进行简单的配置 exportfs -r 等处理

3. download 一些文档. 

与 handbook 里面的一样 获取子目录

git clone https://github.com/kubernetes-incubator/external-storage.git

4. 首先修改 使用 deployment.yaml

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: nfs-client-provisioner:1.0
          volumeMounts:
            - name: nfs-client-root
              mountPath: /persistentvolumes
          env:
            - name: PROVISIONER_NAME
              value: fuseim.pri/ifs
            - name: NFS_SERVER
              value: 127.0.0.1
            - name: NFS_PATH
              value: /nfs/gitlab
      volumes:
        - name: nfs-client-root
          nfs:
            server: 127.0.0.1
            path: /nfs/gitlab

5. 创建 default 的 storage  随意命名即可 应该. 

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: default
provisioner: fuseim.pri/ifs

设置成默认的 pv 提供者

执行命令

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

6. 需要执行创建 serviceaccount 和 role 以及 rolebinding 的 部分 (RBAC)

下载nfs-client 里面的三个文件 分别 kubectl -f 即可

ServiceAccount

apiVersion: v1
kind: ServiceAccount
metadata:
  name: nfs-client-provisioner

第二个文件 

clusterrole.yaml

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"]
  - apiGroups: [""]
    resources: ["endpoints"]
    verbs: ["get", "list", "watch", "create", "update", "patch"]

第三个文件

ClusterRoleBinding.yaml

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

创建执行即可,