基于阿里云NAS 作为持久化存储配置

说明：

存储主要是用于持久化程序内部有效数据，主要包括日志、数据文件、配置中心的配置数据，采用的是阿里云的NAS存储方案，申请模式采用按量付费，如果没有使用的话是没有费用的；需要注意的时候利用阿里云NAS作为存储的话是不支持在线PVC扩容，因为目前官方没有提供针对NFS扩容的插件；

配置K8S支持NFS 相关资源对象

部署RBAC

文件rabc.yaml 内容如下

apiVersion: v1
kind: ServiceAccount
metadata:
  name: nfs-client-provisioner
  # replace with namespace where provisioner is deployed
  namespace: default
---
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
    # replace with namespace where provisioner is deployed
    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
  # replace with namespace where provisioner is deployed
  namespace: default
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
  # replace with namespace where provisioner is deployed
  namespace: default
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

部署rbac

# kubectl apply -f rbac.yaml

 

部署NFS Client Deployment

部署K8S nfs客户端

文件deployment.yaml内容如下

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nfs-client-provisioner
  labels:
    app: nfs-client-provisioner
  namespace: default
spec:
  replicas: 1
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app: nfs-client-provisioner
  template:
    metadata:
      labels:
        app: nfs-client-provisioner
    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: fuseim.pri/ifs
            - name: NFS_SERVER
              value: xxxx-xxxx.cn-beijing.nas.aliyuncs.com
            - name: NFS_PATH
              value: /
      volumes:
        - name: nfs-client-root
          nfs:
            server: xxxx-xxx.cn-beijing.nas.aliyuncs.com #注意这是阿里云提供的nas地址
            path: / 

部署文件deployment

# kubectl apply -f deployment.yaml

 

查看资源对象POD

# kubectl  get pod
NAME                                      READY   STATUS    RESTARTS   AGE
nfs-client-provisioner-776d84b5bf-6gqwj   1/1     Running   0          25m

部署NFS Class

文件Class.yam内容如下

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: managed-nfs-storage
provisioner: fuseim.pri/ifs
parameters:
  archiveOnDelete: "false"
allowVolumeExpansion: true #是否允许扩容
reclaimPolicy: "Retain" #保留策略默认是Delete

部署Class

# kubectl  apply -f class.yaml 
storageclass.storage.k8s.io/managed-nfs-storage created

查看Class

# kubectl  get sc
NAME                       PROVISIONER                       AGE
。。。。。。
managed-nfs-storage        fuseim.pri/ifs                    62s

验证K8s nfs

验证文件test-nfspvc.yaml 内容如下

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: test-claim
  annotations:
    volume.beta.kubernetes.io/storage-class: "managed-nfs-storage"
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 2048Mi

部署test-nfs

# kubectl  apply -f test-nfspvc.yaml 
persistentvolumeclaim/test-claim created

查看PV 、PVC

# kubectl  get pvc,pv
NAME                               STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS          AGE
persistentvolumeclaim/test-claim   Bound    pvc-7866b19d-3a72-4e0b-9841-c053e10ec48a   2Gi        RWX            managed-nfs-storage   2m8s

NAME                                                        CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM                STORAGECLASS          REASON   AGE
persistentvolume/pvc-7866b19d-3a72-4e0b-9841-c053e10ec48a   2Gi        RWX            Retain           Bound    default/test-claim   managed-nfs-storage            2m8s

NFS 相关资源对象部署完成