1. 介绍：
本文介绍的动态生成NAS存储卷的方案：在一个已有文件系统上，自动生成一个目录，这个目录定义为目标存储卷；
镜像地址：registry.cn-hangzhou.aliyuncs.com/acs/alicloud-nas-controller:v1.11.5.4-433631d-aliyun
默认生成资源：
生成的PV名字为：pvc-${pvc-uid}生成目录的名字：namespace-pvcname-pvname可以再pvc的annotations中如下声明，自定义名字：
生成的pv、目录名字为下面定义的名字。annotations: pv-name-created: replace-user-id
2. 部署NAS Controller
创建alicloud-nas-controller，实现动态provider nas pv；
创建alicloud-nas storageclass，为nas pv provision 提供模板；apiVersion: storage.k8s.io/v1kind: StorageClassmetadata: name: alicloud-nasprovisioner: alicloud/nasreclaimPolicy: Deleteparameters: drivertype: flexvolume nfsversion: "4.0" options: ""---kind: DeploymentapiVersion: extensions/v1beta1metadata: name: alicloud-nas-controller namespace: kube-systemspec: replicas: 1 strategy: type: Recreate template: metadata: labels: app: alicloud-nas-controller spec: tolerations: - effect: NoSchedule operator: Exists key: node-role.kubernetes.io/master - effect: NoSchedule operator: Exists key: node.cloudprovider.kubernetes.io/uninitialized serviceAccount: admin containers: - name: alicloud-nas-controller image: registry.cn-hangzhou.aliyuncs.com/acs/alicloud-nas-controller:v1.11.5.4-433631d-aliyun imagePullPolicy: Always volumeMounts: - mountPath: /persistentvolumes name: nfs-client-root env: - name: NFS_SERVER value: 154154b095-**.cn-beijing.nas.aliyuncs.com - name: NFS_PATH value: / volumes: - name: nfs-client-root flexVolume: driver: alicloud/nas options: path: / server: 154154b095-**.cn-beijing.nas.aliyuncs.com vers: "4.0"
StorageClass使用说明：
drivertype: 用来表示生成pv存储类型，可选nfs, flexvolume. nfs: 默认选项，表示使用k8s原生NFS驱动挂载； flexvolume: 表示使用阿里云提供的Flexvolume NAS驱动挂载；nfsversion: 挂载nfs使用的版本，支持3，4.0.默认为4.0； drivertype为flexvolume的时候在这里配置； 为nfs的时候通过mountOptions 配置；options：为挂载nfs的可选项配置； drivertype为flexvolume的时候在这里配置； 为nfs的时候通过mountOptions 配置；
StorageClass举例：
## 使用kubernetes提供的NFS驱动，并配置mountOptions，reclaimPolicy为Delete；apiVersion: storage.k8s.io/v1kind: StorageClassmetadata: name: alicloud-nas-nfsmountOptions:- vers=4.0- noresvportprovisioner: alicloud/nasreclaimPolicy: Delete## 使用阿里云提供的Flexvolume NAS驱动，配置nfs版本、options；apiVersion: storage.k8s.io/v1kind: StorageClassmetadata: name: alicloud-nas-flexprovisioner: alicloud/nasreclaimPolicy: Deleteparameters: drivertype: flexvolume nfsversion: "3" options: "noresvport"
3. 创建应用-Deployment：
kind: PersistentVolumeClaimapiVersion: v1metadata: name: replace-user-id annotations: pv-name-created: replace-user-idspec: storageClassName: alicloud-nas accessModes: - ReadWriteMany resources: requests: storage: 5Gi---apiVersion: extensions/v1beta1kind: Deploymentmetadata: name: "deploy-nas"spec: replicas: 1 strategy: type: Recreate template: metadata: labels: app: deploy-nas spec: containers: - name: "nginx" image: "nginx" volumeMounts: - name: pvc-nas mountPath: "/data" volumes: - name: pvc-nas persistentVolumeClaim: claimName: replace-user-id执行：# userID="hello-123"# cat deploy.yaml | sed "s/replace-user-id/\"$userID\"/g" | kubectl create -f -# kubectl get pod | grep deploy-nasdeploy-nas-85696b6bfc-t5dmh 1/1 Running 0 28m# kubectl get pvc | grep hellhello-123 Bound hello-123 5Gi RWX alicloud-nas-flex 28m# kubectl get pv | grep hellhello-123 5Gi RWX Delete Bound default/hello-123 alicloud-nas-flex 28m# Nas目录下查看生成目录：# ls -l | grep hellodrwxrwxrwx 2 root root 4096 2月 19 09:58 hello-123
4. 创建应用-StatefulSet：
使用volumeTemplateClaim不支持使用pv-name-created配置pv名字；
apiVersion: v1kind: Servicemetadata: name: nginx labels: app: nginxspec: ports: - port: 80 name: web clusterIP: None selector: app: nginx---apiVersion: apps/v1beta1kind: StatefulSetmetadata: name: webspec: replicas: 2 serviceName: "nginx" template: metadata: labels: app: nginx spec: containers: - name: nginx image: nginx:alpine volumeMounts: - mountPath: "/data" name: pvc-sts volumeClaimTemplates: - metadata: name: pvc-sts spec: accessModes: - ReadWriteOnce storageClassName: alicloud-nas-flex resources: requests: storage: 2Gi 创建后查看：# kubectl get pod | grep webweb-0 1/1 Running 0 7sweb-1 1/1 Running 0 4s# kubectl get pvc | grep webpvc-sts-web-0 Bound pvc-65ab251a-33ec-11e9-a151-00163e066784 2Gi RWO alicloud-nas-flex 13mpvc-sts-web-1 Bound pvc-8437c50e-33ed-11e9-a151-00163e066784 2Gi RWO alicloud-nas-flex 5m# kubectl get pv | grep webpvc-65ab251a-33ec-11e9-a151-00163e066784 2Gi RWO Delete Bound default/pvc-sts-web-0 alicloud-nas-flex 13mpvc-8437c50e-33ed-11e9-a151-00163e066784 2Gi RWO Delete Bound default/pvc-sts-web-1 alicloud-nas-flex 5m# Nas目录下查看生成目录：# ls -l | grep stsdrwxrwxrwx 2 root root 4096 2月 19 10:16 default-pvc-sts-web-0-pvc-65ab251a-33ec-11e9-a151-00163e066784drwxrwxrwx 2 root root 4096 2月 19 10:24 default-pvc-sts-web-1-pvc-8437c50e-33ed-11e9-a151-00163e066784
5. 创建应用-Pod：
kind: PersistentVolumeClaimapiVersion: v1metadata: name: replace-user-id annotations: pv-name-created: replace-user-idspec: storageClassName: alicloud-nas-flex accessModes: - ReadWriteMany resources: requests: storage: 5Gi---apiVersion: v1kind: Podmetadata: name: "nas-pod"spec: containers: - name: "nginx" image: "nginx" volumeMounts: - name: pvc-nas mountPath: "/data" volumes: - name: pvc-nas persistentVolumeClaim: claimName: replace-user-id # userID="pod-123"# cat pod.yaml | sed "s/replace-user-id/\"$userID\"/g" | kubectl create -f -# kubectl get pod | grep podnas-pod 1/1 Running 0 32s# kubectl get pvc | grep podpod-123 Bound pod-123 5Gi RWX alicloud-nas-flex 44s# kubectl get pv | grep podpod-123 5Gi RWX Delete Bound default/pod-123 alicloud-nas-flex 48s# ls -l | grep poddrwxrwxrwx 2 root root 4096 2月 19 10:54 pod-123
本文作者：kanjunbao
本文为云栖社区原创内容，未经允许不得转载。