安装NFS

# 安装nfs
yum -y install nfs-utils rpcbind
#创建nfs共享目录及设置权限
mkdir /nfs/renren -p
chmod 755 /nfs/renren -R
#配置nfs
cat /etc/exports
/nfs/renren *(async,insecure,no_root_squash,no_subtree_check,rw)

启动NFS

systemctl start rpcbind
systemctl enable rpcbind
systemctl status rpcbind
systemctl start nfs
systemctl enable nfs
systemctl status nfs

客户端在使用NFS时，需要安装NFS

#在客户端上安装启动nfs
yum -y install nfs-utils rpcbind
systemctl start rpcbind
systemctl enable rpcbind
systemctl start nfs
systemctl enable nfs
#查看nfs共享
showmount -e k8s-master

创建基于NFS的StorageClass

https://github.com/kubernetes-retired/external-storage.git
主要部署下面这些资源清单，只有deployment.yaml需要修改nfs相关配置

# 部署deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nfs-client-provisioner
  labels:
    app: nfs-client-provisioner
  # replace with namespace where provisioner is deployed
  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: 192.168.126.130  #修改nfs服务器地址
            - name: NFS_PATH
              value: /nfs/renren       #nfs目录
      volumes:
        - name: nfs-client-root
          nfs:
            server: 192.168.126.130  #修改nfs服务器地址
            path: /nfs/renren        #nfs目录

kubectl apply -f deployment.yaml
#部署rbac
kubectl apply -f rbac.yaml
#部署storageclass
kubectl apply -f class.yaml
#查看创建的资源
kubectl get pods

在pvc中调用storageclass动态提供pv

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: pvc-mysql
  namespace: renren-fast
  annotations:
    volume.beta.kubernetes.io/storage-class: "managed-nfs-storage"
spec:
  volumeMode: Filesystem
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 5Gi

kubectl apply -f pvc-mysql.yaml

在pod控制器中使用storageclass

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: statefulset-mysql
  namespace: renren-fast
spec:
  selector:
    matchLabels:
      app: statefulset-mysql
  serviceName: headless-mysql
  volumeClaimTemplates:
    - metadata:
        name: pvc-mysql
        annotations:
          volume.beta.kubernetes.io/storage-class: "managed-nfs-storage"
      spec:
        accessModes: ["ReadWriteOnce"]
        resources:
          requests:
            storage: 1Gi
  template:
    metadata:
      labels:
        app: statefulset-mysql
    spec:
      volumes:
        - name: mysql-conf
          configMap:
            name: mysql-configmap
            items:
              - key: mysql.cnf
                path: mysql.cnf
              - key: mysqld.cnf
                path: mysqld.cnf
              - key: mysqldump.cnf
                path: mysqldump.cnf
              - key: docker.cnf
                path: docker.cnf
      containers:
        - name: mysql
          image: mysql:5.6
          ports:
            - containerPort: 3306
          env:
            - name: MYSQL_ROOT_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: secret-mysql
                  key: password
          volumeMounts:
            - mountPath: /var/lib/mysql
              name: mysql-data
            - mountPath: /etc/mysql/conf.d/mysql.cnf
              subPath: mysql.cnf
              name: mysql-conf
            - mountPath: /etc/mysql/conf.d/mysqldump.cnf
              subPath: mysqldump.cnf
              name: mysql-conf
            - mountPath: /etc/mysql/conf.d/docker.cnf
              subPath: docker.cnf
              name: mysql-conf
            - mountPath: /etc/mysql/mysql.conf.d/mysqld.cnf
              subPath: mysqld.cnf
              name: mysql-conf
              
kubectl apply -f statefulset-mysql.yaml