Docker 桌面上的 K8s 本地持久卷在 Docker 桌面重启后丢失数据

Question

我在本地 K8s 集群中遇到 PersistentVolume 问题。当我重新启动 PC 或关闭并打开桌面时 Docker 我的 PV 中的数据丢失了。

这是我的 PV 配置：

apiVersion: v1
kind: PersistentVolume
metadata:
  name: pvolume
  labels:
    name: pvolume
spec:
  storageClassName: manual
  volumeMode: Filesystem
  capacity:
    storage: 2Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/mnt/data"

是否有可能保留数据而不使用外部 PV 提供程序（如 GCP volume）？

解决方案：

apiVersion: v1
kind: PersistentVolume
metadata:
  name: pvolume
  labels:
   name: pvolume
spec:
  capacity:
    storage: 3Gi
  accessModes:
  - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  storageClassName: your-local-storage-class-name
  local:
    path: /c/yourDir
  nodeAffinity:
    required:
      nodeSelectorTerms:
      - matchExpressions:
        - key: kubernetes.io/hostname
          operator: In
          values:
          - docker-desktop

Answer 1

正如我在评论部分提供的链接中提到的那样 - 阅读更多：docker-desktop-pv, docker-desktop-pv-local - solution/workaround is to use different volume type. Change hostPath volume to local. Your PV yaml 文件应如下所示：

apiVersion: v1
kind: PersistentVolume
metadata:
  name: pvolume
  labels:
    name: pvolume
spec:
  storageClassName: manual
  volumeMode: Filesystem
  capacity:
    storage: 2Gi
  accessModes:
    - ReadWriteOnce
  local:
    path: /c/yourDirectory

local.path 直接显示您引用 Windows 文件夹的位置，以便您可以在 Windows 机器上本地连接 PersistentVolume。

• hostPath- HostPath volume (for single node testing only; WILL NOT WORK in a multi-node cluster; consider using local volume instead) ...
• local - local storage devices mounted on nodes.

参见：types-of-pv。