一、PV（PersistentVolume）

卷对象

• 创建pv对象

apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-pv-10m
  namespace: raven
spec:
  capacity:
    storage: 10m
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Recycle
  storageClassName: slow
  nfs:  # 定义NFS类型的PV
    path: /nfs/data
    server: 172.20.173.235

二、PVC（PersistentVolumeClaim）

PVC 有点像Pod和PV之间的匹配器

• 创建PVC对象

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: nfs-pvc
  namespace: raven
  labels:
    app: nfs-pvc
spec:
  storageClassName: slow  # 与定义 PV.yaml 中的 storageClassName 保证一致
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 90M

三、Pod 使用PVC

apiVersion: v1
kind: Pod
metadata:
  name: "nfs-pod-pvc"
  namespace: raven
  labels:
    app: "nfs-pod-pvc"
spec:
  containers:
  - name: nfs-pod-pvc
    image: "nginx"
    ports:
    - containerPort:  80
      name:  http
    volumeMounts:
    - name: localtime
      mountPath: /etc/localtime
    - name: pvc
      mountPath: /usr/share/nginx/html
  volumes:
    - name: localtime
      hostPath:
        path: /usr/share/zoneinfo/Asia/Shanghai
    - name: pvc
      persistentVolumeClaim:
        claimName: nfs-pvc
  restartPolicy: Always

验证PVC挂载.png

推荐把相关的多个资源写在一个YAML文件中，便于维护

# 定义 Pod
apiVersion: v1
kind: Pod
metadata:
  name: "nfs-pod-pvc"
  namespace: raven
  labels:
    app: "nfs-pod-pvc"
spec:
  containers:
  - name: nfs-pod-pvc
    image: "nginx"
    ports:
    - containerPort:  80
      name:  http
    volumeMounts:
    - name: localtime
      mountPath: /etc/localtime
    - name: pvc
      mountPath: /usr/share/nginx/html
  volumes:
    - name: localtime
      hostPath:
        path: /usr/share/zoneinfo/Asia/Shanghai
    - name: pvc
      persistentVolumeClaim:
        claimName: nfs-pvc
  restartPolicy: Always
---
# 定义 PVC
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: nfs-pvc
  namespace: raven
  labels:
    app: nfs-pvc
spec:
  storageClassName: slow  # 与定义 PV.yaml 中的 storageClassName 保证一致
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 90M
---
# 定义 PV
apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-pv-10m
  namespace: raven
spec:
  capacity:
    storage: 10m
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Recycle
  storageClassName: slow
  nfs:  # 定义NFS类型的PV
    path: /nfs/data
    server: 172.20.173.235