第一步，需要一個安裝好的k8s叢集，這裡省略

第二步，搭建nfs儲存，把/share目錄共享出來

[root@master active_pvc]# vim /etc/exports
/share *(insecure,rw,sync,fsid=0,crossmnt,no_subtree_check,anonuid=666,anongid=666,no_root_squash)

第三步，重啟nfs服務，然後驗證

第四步，因為我的k8s用的是nfs儲存，不支援動態補給，如果需要動態補給，就需要外掛

nfs-client-provisioner

網址：https://github.com/kubernetes-retired/external-storage/tree/master/nfs-client/deploy

需要這些k8s配置清單來部署，我們現在下載下來，如果github上下載很慢，可以去gitee，搜尋external-storage也可以，很快

[root@master active_pvc]#uri="https://raw.githubusercontent.com/kubernetes-retired/external-storage/master/nfs-client/deploy/"

[root@master active_pvc]#for i in class.yaml deployment.yaml test-claim.yaml test-pod.yaml;do wget -c $uri$i;done
 

第五步，修改deployment.yaml

應用deployment

[root@master active_pvc]# kubectl apply -f deployment.yaml
deployment.apps/nfs-client-provisioner created

應用rbac，需要給deploy許可權，否則，pod建立不出來

[root@master active_pvc]# kubectl apply -f rbac.yaml
serviceaccount/nfs-client-provisioner created
clusterrole.rbac.authorization.k8s.io
 
/nfs-client-provisioner-runner created
clusterrolebinding.rbac.authorization.k8s.io/run-nfs-client-provisioner created
role.rbac.authorization.k8s.io/leader-locking-nfs-client-provisioner created
rolebinding.rbac.authorization.k8s.io/leader-locking-nfs-client-provisioner created

應用sc

[root@master active_pvc]# kubectl apply -f class.yaml
storageclass.storage.k8s.io/managed-nfs-storage created

至於test-claim和test-pod可以不用，我這裡直接給一個真實環境elasticsearch叢集

es-cluster.yaml

---
kind: Service
apiVersion: v1
metadata:
  name: es
  namespace: bigdata
  labels:
    app: elasticsearch
spec:
  selector:
    app: elasticsearch
  type: NodePort
  ports:
    - port: 9200
      nodePort: 30080
      name: rest
    - port: 9300
      nodePort: 30070
      name: inter-node
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: es-cluster
  namespace: bigdata
spec:
  serviceName: es
  replicas: 3
  selector:
    matchLabels:
      app: elasticsearch
  template:
    metadata:
      labels:
        app: elasticsearch
    spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            - labelSelector:
                matchExpressions:
                  - key: "app"
                    operator: In
                    values:
                      - elasticsearch
                  - key: "kubernetes.io/hostname"
                    operator: NotIn
                    values:
                      - master
              topologyKey: "kubernetes.io/hostname"
      containers:
        - name: elasticsearch
          image: elasticsearch:7.2.0
          imagePullPolicy: IfNotPresent
          resources:
            limits:
              cpu: 1000m
            requests:
              cpu: 100m
          ports:
            - containerPort: 9200
              name: rest
              protocol: TCP
            - containerPort: 9300
              name: inter-node
              protocol: TCP
          volumeMounts:
            - name: data
              mountPath: /usr/share/elasticsearch/data
          env:
            - name: cluster.name
              value: k8s-logs
            - name: node.name
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: discovery.seed_hosts
              value: "es-cluster-0.es,es-cluster-1.es,es-cluster-2.es"
            - name: cluster.initial_master_nodes
              value: "es-cluster-0,es-cluster-1,es-cluster-2"
            - name: ES_JAVA_OPTS
              value: "-Xms512m -Xmx512m"
      initContainers:
        - name: fix-permissions
          image: busybox
          imagePullPolicy: IfNotPresent
          command: ["sh", "-c", "chown -R 1000:1000 /usr/share/elasticsearch/data"]
          securityContext:
            privileged: true
          volumeMounts:
            - name: pvc01
              mountPath: /usr/share/elasticsearch/data
        - name: increase-vm-max-map
          image: busybox
          imagePullPolicy: IfNotPresent
          command: ["sysctl", "-w", "vm.max_map_count=262144"]
          securityContext:
            privileged: true
        - name: increase-fd-ulimit
          image: busybox
          imagePullPolicy: IfNotPresent
          command: ["sh", "-c", "ulimit -n 65536"]
          securityContext:
            privileged: true
  volumeClaimTemplates:
    - metadata:
        name: pvc01
        labels:
          app: elasticsearch
      spec:
        accessModes: [ "ReadWriteMany" ]
        storageClassName: es
        resources:
          requests:
            storage: 10Gi

補充

如果遇到這種報錯

那麼需要在所在的節點安裝nfs-utils包，最好是每一個節點都安裝