Pod配置PersistentVolumeClaim詳解

1，創建PersistentVolume

kind: PersistentVolume
apiVersion: v1
metadata:
  name: task-pv-volume
  labels:
    type: local
spec:
  storageClassName: manual
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/mnt/data"

執行上面配置文件后PersistentVolume被創建，通過命令查看

kubectl get pv

2，創建PersistentVolumeClaim

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: task-pv-claim
spec:
  storageClassName: manual
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 3Gi

PersistentVolumeClaim已邦定到PersistentVolume，創建后通過命令查看

kubectl get pvc

 3，創建Pod使用PersistentVolumeClaim

kind: Pod
apiVersion: v1
metadata:
  name: task-pv-pod
spec:
  volumes:
    - name: task-pv-storage
      persistentVolumeClaim:
       claimName: task-pv-claim
  containers:
    - name: task-pv-container
      image: nginx
      ports:
        - containerPort: 80
          name: "http-server"
      volumeMounts:
        - mountPath: "/usr/share/nginx/html"
          name: task-pv-storage

容器目錄/usr/share/nginx/html已掛載到宿主機/mnt/data

參考資料

https://kubernetes.io/docs/tasks/configure-pod-container/configure-persistent-volume-storage/

https://kubernetes.io/docs/concepts/storage/persistent-volumes/

https://kubernetes.io/docs/tasks/administer-cluster/change-default-storage-class/