node.js - 如何将具有数据(我需要此数据)的Pod容器路径安装到kubernetes中的本地主机路径

Question

我有一个pod(kind:job)，它在“/ usr / src / app”下有一些代码构建文件，这些文件在本地k8s主机中需要。

但是，当我尝试按照以下yamls进行操作时，无法在已挂载的主机路径中看到任何数据，该数据实际上位于pod容器(“/ usr / src / app”)中。我认为安装正在覆盖/隐藏该数据。请帮助我进入本地k8s主机。

我的文件是:-

apiVersion: batch/v1
kind: Job
metadata:
  name: wf
spec:
  template:
    spec:
      containers:
      - name: wf
        image: 12345678.dkr.ecr.ap-south-1.amazonaws.com/eks:ws
        volumeMounts:
          - name: wf-persistent-storage
            mountPath: /usr/src/app    # my data is in (/usr/src/app)
      volumes:
        - name: wf-persistent-storage
          # pointer to the configuration of HOW we want the mount to be implemented
          persistentVolumeClaim:
            claimName: wf-test-pvc
      restartPolicy: Never

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: wf-test-pvc
spec:
  storageClassName: mylocalstorage
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 2Gi
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: local
spec:
  storageClassName: mylocalstorage
  capacity:
    storage: 2Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/root/mnt/"
    type: DirectoryOrCreate

Answer 1

不要挂载/ usr / src / app。因为它将被PVC的内容覆盖。在您的情况下，pvc最初为空，因此将删除所有文件。

尝试以下代码，将/ tmp安装在pvc上，并使用命令将文件复制到pvc。

apiVersion: batch/v1
kind: Job
metadata:
  name: wf
spec:
  template:
    spec:
      containers:
      - name: wf
        image: 12345678.dkr.ecr.ap-south-1.amazonaws.com/eks:ws
        command:
        - bash 
        - -c
        - cp -R /usr/src/app/* /tmp/ 
        volumeMounts:
          - name: wf-persistent-storage
            mountPath: /opt    # my data is in (/usr/src/app)
      volumes:
        - name: wf-persistent-storage
          # pointer to the configuration of HOW we want the mount to be implemented
          persistentVolumeClaim:
            claimName: wf-test-pvc
      restartPolicy: Never