kubernetes - kubectl pod部署后不存在k8s initContainer mountPath

Question

下面是部署yaml，部署后，我可以访问pod
我可以看到mountPath“/ usr / share / nginx / html”，但是找不到
“/ work-dir”应该由initContainer创建。
有人可以解释一下原因吗？
谢谢和Rgds

apiVersion: v1
kind: Pod
metadata:
 name: init-demo
spec:
 containers:
 - name: nginx
   image: nginx
   ports:
   - containerPort: 80
   volumeMounts:
   - name: workdir
     mountPath: /usr/share/nginx/html
 # These containers are run during pod initialization
 initContainers:
 - name: install
   image: busybox
   command:
   - wget
   - "-O"
   - "/work-dir/index.html"
   - http://kubernetes.io
   volumeMounts:
   - name: workdir
     mountPath: "/work-dir"
 dnsPolicy: Default
 volumes:
 - name: workdir
   emptyDir: {}

Answer 1

“/ work-dir”处的卷由init容器安装，而“/ work-dir”位置仅存在于init容器中。当init容器完成时，其文件系统消失了，因此init容器中的“/ work-dir”目录已“消失”。应用程序(nginx)容器也挂载相同的卷(尽管位于不同的位置)，从而为两个容器提供共享其内容的机制。

根据docs:

Init containers can run with a different view of the filesystem than app containers in the same Pod.