使用NAS动态存储卷创建有状态应用

介绍：

目前动态生成NAS存储卷的实现：在一个已有文件系统上，自动生成子文件系统（子目录），并生成目标存储卷（PV）；

生成的PV名字为：pvc-${pv-uid}

镜像介绍：

registry.cn-hangzhou.aliyuncs.com/acs/alicloud-nas-controller:v3.1.0-k8s1.11

部署：

部署前要先创建一个NAS文件系统，并添加挂载点。注意：挂载点需要和集群处于同一个VPC内部。

部署模板中，创建Storageclass的时候可以定义reclaimPolicy类型，可以为Retain或者Delete；

根据自己NAS挂载点修改NFS_SERVER、server的值；

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
 name: alicloud-nas
mountOptions:
- vers=4.0
provisioner: alicloud/nas
reclaimPolicy: Retain
---
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
 name: alicloud-nas-controller
 namespace: kube-system
spec:
 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
 nodeSelector:
 node-role.kubernetes.io/master: ""
 serviceAccount: admin
 containers:
 - name: alicloud-nas-controller
 image: registry.cn-hangzhou.aliyuncs.com/acs/alicloud-nas-controller:v3.1.0-k8s1.11
 volumeMounts:
 - mountPath: /persistentvolumes
 name: nfs-client-root
 env:
 - name: PROVISIONER_NAME
 value: alicloud/nas
 - name: NFS_SERVER
 value: 0cd8b4a576-mmi32.cn-hangzhou.nas.aliyuncs.com
 - name: NFS_PATH
 value: /
 volumes:
 - name: nfs-client-root
 nfs:
 server: 0cd8b4a576-mmi32.cn-hangzhou.nas.aliyuncs.com
 path: /

测试：

apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
 name: web
spec:
 serviceName: "nginx"
 replicas: 2
 template:
 metadata:
 labels:
 app: nginx
 spec:
 containers:
 - name: nginx
 image: nginx:alpine
 volumeMounts:
 - mountPath: "/data"
 name: html
 volumeClaimTemplates:
 - metadata:
 name: html
 spec:
 accessModes:
 - ReadWriteOnce
 storageClassName: alicloud-nas
 resources:
 requests:
 storage: 2Gi
# kubectl get pv
NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE
pvc-945ca15d-e0ab-11e8-9d2f-00163e145c08 2Gi RWO Retain Bound default/html-web-0 alicloud-nas-retain 13m
pvc-9a162bb2-e0ab-11e8-9d2f-00163e145c08 2Gi RWO Retain Bound

作者：kanjunbao