Kubernetes-如何下载PersistentVolume的内容 [英] Kubernetes - how to download a PersistentVolume's content

问题描述

我在通过掌舵创建的K8s集群中有一个测试执行器Pod，它要求动态创建的PersistentVolume用于存储测试结果.

I have a test executor Pod in K8s cluster created through helm, which asks for a dynamically created PersistentVolume where it stores the test results.

现在，我想获取此卷的内容.看起来很自然. 我希望一些kubectl download pv <id>.但是我什么都不能用谷歌搜索.

Now I would like to get the contents of this volume. It seems quite natural thing to do. I would expect some kubectl download pv <id>. But I can't google up anything.

如何获取PersistentVolume的内容?

How can I get the contents of a PersistentVolume?

我在AWS EKS中；因此，AWS API也是一种选择.我也可以访问ECR，所以也许我可以以某种方式将其存储为图像并下载?

I am in AWS EKS; so AWS API is also an option. Also I can access ECR so perhaps I could somehow store it as an image and download?

或者，总的来说，我正在寻找一种转移目录的方法，甚至可以将其保存在存档中.但是应该在容器完成后 并且不再运行.

Or, in general, I am looking for a way to transfer a directory, can be even in an archive. But It should be after the container finished and doesn't run anymore.

推荐答案

我可以考虑两种方法来满足您的需求:

I can think about two options to fulfill your needs:

1)创建一个已附加PV的容器，然后使用kubectl cp将其复制到所需的位置.例如，您可以使用类似于以下内容的PodSpec:

1) create a pod with the PV attached to it and use kubectl cp to copy the contents wherever you need. You could for example use a PodSpec similar the following:

apiVersion: v1
kind: Pod
metadata:
  name: dataaccess
spec:
  containers:
  - name: alpine
    image: alpine:latest
    command:
    - sleep
    - 999999
    volumeMounts:
    - name: mypvc
      mountPath: /data
  volumes:
  - name: mypvc
    persistentVolumeClaim:
      claimName: mypvc

请注意，mypvc应该是与要复制数据的PV绑定的PersistentVolumeClaim的名称.

Please note that mypvc should be the name of the PersistentVolumeClaim that is bound to the PV you want to copy data from.

pod运行后，您可以运行以下操作从任何配置了kubectl的计算机上复制数据:

Once the pod is running, you can run something like this to copy the data from any machine that has kubectl configured to connect to your cluster:

kubectl cp dataaccess:/data data/

2)将PV的EBS卷安装在EC2实例中，然后从那里复制数据.这种情况下，要进行详细说明不太容易，因为它需要更多有关您要实现的目标的上下文.

2) mount the PV's EBS volume in an EC2 instance and copy the data from there. This case is less simple to explain in detail because it needs a little more context about what you're trying to achieve.

这篇关于Kubernetes-如何下载PersistentVolume的内容的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！