如何预填充ReadOnlyMany永久卷 [英] How to pre-populate a ReadOnlyMany Persistent Volume

问题描述

我正在尝试在GKE中创建一个使用多个副本的部署.我有一些静态数据，希望在每个吊舱中都可以使用.此数据将不会更新，不需要写入.

I am trying to create a deployment in GKE that uses multiple replicas. I have some static data which I want to have available in every pod. This data will not be updated, no write is required.

我决定将PV与ReadOnlyMany存储类一起使用.问题是，我不知道如何实际将数据传输到该卷-因为它是只读的.我尝试使用

I decided to use a PV with a corresponding PVC with the ReadOnlyMany storage class. The thing is, I do not know how to actually transfer my data to the volume - since it is read-only. I tried using

gcloud compute scp /local/path instance:/remote/path

但是，当然，我得到一个权限错误.然后，我尝试通过控制台创建新的PV.我使用

but of course, I get a permission error. I then tried creating a new PV via the console. I attached it to a VM with

gcloud compute instances attach disk

安装并格式化磁盘，传输数据，卸载磁盘，将其与VM分离，并按照

mounted and formatted the disk, transfered my data, unmounted the disk, detached it from the VM and finally created a PVC following the documentation. I changed the storage class to ReadOnlyMany, the only difference.

但是，当我尝试将部署扩展到多个副本时，仍然收到错误消息，表明磁盘已经连接到另一个节点.

But still, when I'm trying to scale my deployment to more than one replicas I get an error saying the disk is already attached to another node.

那么，如何创建要在ReadOnlyMany中使用的卷并用数据填充磁盘?还是因为不需要写入而有更好的方法?

So, how can I create a volume that is to be used in ReadOnlyMany and populate the disk with data? Or is there a better approach since no write is required?

预先感谢

推荐答案

为我工作.在Pod模板中使用持久卷声明时是否指定了readOnly: true?

Worked for me. Have you specified readOnly: true when using persistent volume claim in the Pod template?

volumes:
- name: my-volume
  persistentVolumeClaim:
    claimName: my-readonly-pvc
    readOnly: true

在此处查看详细信息 https://cloud.google.com/kubernetes-engine/docs/how-to/persistent-volumes/readonlymany-disks

See details here https://cloud.google.com/kubernetes-engine/docs/how-to/persistent-volumes/readonlymany-disks

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