Question

我正在尝试使用this拉取请求中实现的新subPath功能（最近在v1.3中发布）。

但是，mount的输出显示它忽略了subPath，为两个卷安装都安装了相同的NFS目录：

nfs-server:/mnt/nfs/exports/apps/my-app on /home/share/foo type nfs4 (rw,relatime,vers=4.0,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=10.128.0.4,local_lock=none,addr=nfs-server)
nfs-server:/mnt/nfs/exports/apps/my-app on /home/share/bar/baz type nfs4 (rw,relatime,vers=4.0,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=10.128.0.4,local_lock=none,addr=nfs-server)

我部署的相关部分YAML：

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: app
spec:
  replicas: 1
  template:
    metadata:
      labels:
        name: app
    spec:
      containers:
      - name: app
        image: my-org/my-app:latest
        volumeMounts:
        - mountPath: /home/share/foo
          name: nfs
          subPath: foo-resources
        - mountPath: /home/share/bar/baz
          name: nfs
          subPath: baz-resources
      volumes:
      - name: nfs
        nfs:
          path: /mnt/nfs/exports/apps/my-app
          server: nfs-server

Answer 1

我不是百分之百确定这一点，因为我使用configMap卷而非NFS，但我必须使mountPath与subPath匹配如下所示，在它为我工作之前。

仅供参考，我使用的是Kubernetes v1.4.5。

如果我正确地阅读此内容，您需要：

挂载NFS文件或目录/mnt/nfs/exports/apps/my-app/foo-resources，使其在容器中的路径为/home/share/foo/foo-resources。
挂载，NFS文件或目录/mnt/nfs/exports/apps/my-app/baz-resources，使其在容器中的路径为/home/share/bar/baz/baz-resources。

试试这个：

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: app
spec:
  replicas: 1
  template:
    metadata:
      labels:
        name: app
    spec:
      containers:
      - name: app
        image: my-org/my-app:latest
        volumeMounts:
        - mountPath: /home/share/foo/foo-resources
          name: nfs
          subPath: foo-resources
        - mountPath: /home/share/bar/baz/baz-resources
          name: nfs
          subPath: baz-resources
      volumes:
      - name: nfs
        nfs:
          path: /mnt/nfs/exports/apps/my-app
          server: nfs-server

差异：

16c16
<         - mountPath: /home/share/foo/foo-resources
---
>         - mountPath: /home/share/foo
19c19
<         - mountPath: /home/share/bar/baz/baz-resources
---
>         - mountPath: /home/share/bar/baz

Answer 2

当我尝试使用kubectl 1.2版更新Kubernetes 1.4群集时出现此问题。尝试更新您的kubectl，然后在相应的文件上运行kubectl apply。

volumeMount subPath不起作用

2 个答案: