Volume 設定

設定 nfs 當 persistent volume

doc: kubernetes-incubator/external-storage

Step1. 下載 github Repo

https://github.com/kubernetes-incubator/external-storage/tree/master/nfs-client

Step2. 部署

下載 github repo， 部署以下兩個 yaml (按右上角 Import YAML，修改完成後，複製貼上到黑色區塊即可)

• deploy/rbac.yaml

• deploy/deployment.yaml

其中兩個檔案需要修改

• 修改 rbac.yaml 的 namespace (有兩個)，指定要部署在哪個 namespace

• 修改 deploy/deployment.yaml 修改其中的：PROVISIONER_NAME、NFS_SERVER、NFS_PATH，NFS share directory等資料，有5處需要修改

rbac.yaml 範例

deploy/rbac.yaml

...
...
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: run-nfs-client-provisioner
subjects:
  - kind: ServiceAccount
    name: nfs-client-provisioner
    namespace: default       # **此處需要修改**
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      # **此處需要修改**
roleRef:
  kind: Role
  name: leader-locking-nfs-client-provisioner
  apiGroup: rbac.authorization.k8s.io

deployment.yaml 範例

deploy/deployment.yaml

# deploy/deployment.yaml
# 掛載到 172.16.100.37 的 nfs server 上
# 的 /zfsPool/nfs_share 目錄
# **注意有五處需要修改**
...
...
...
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: provisioner-nfs  # **此處需要修改**這個名稱，之後會用到
        - name: NFS_SERVER
            value: 172.16.100.37  # **此處需要修改**
        - name: NFS_PATH
            value: /zfsPool/nfs_share  # **此處需要修改**
    volumes:
    - name: nfs-client-root
        nfs:
        server: 172.16.100.37  # **此處需要修改**
        path: /zfsPool/nfs_share  # **此處需要修改**

Step3. 設定 StorageClass

進到 Rancher-> Cluster-> Storage-> Storage Classes 頁面

按右上角的 Add Class

設定 Name, Provisioner, Policy，完成後按 Save

Provisioner 填寫為剛才deploy/deployment.yaml中設定的 PROVISIONER_NAME 的值 (依照上一步驟的範例要填 provisioner-nfs)

完成後，可以設定為預設使用的 Storage Class

掛載 volume 方式見 User 使用手冊