如何将有数据的pod容器路径(我需要这些数据)装载到kubernetes中的本地主机路径

Question

我有pod(kind:job(，它在"/usr/src/app"下有一些代码构建文件，这些文件我需要在本地k8s主机中。

但是，当我试图按照下面的yamls进行操作时，我无法在pod容器("/usr/src/app"(中实际存在的挂载主机路径中看到任何数据。我认为挂载是覆盖/隐藏数据。请帮我进入本地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

不要安装/usr/src/app。因为它会被PVC的内容覆盖。在您的情况下，pvc最初是空的，因此所有文件都将被删除。

尝试使用以下代码，您将在pvc上安装/tmp，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