apiVersion: v1
kind: Pod
metadata:
  name: busybox-emptydir
  labels:
    app: busybox
spec:
  containers:
    - name: write # 负责写
      image: busybox
      command: [ "sh", "-c" ]
      args: [ "echo 'hellok8s!' > /write_dir/data; sleep infinity" ]
      volumeMounts:
        - mountPath: /write_dir
          name: temp-dir
    - name: read # 负责读
      image: busybox
      command: [ "sh", "-c" ]
      args: [ "cat /read_dir/data; sleep infinity" ]
      volumeMounts:
      - mountPath: /read_dir
        name: temp-dir
        readOnly: true # 可选
  volumes:
    - name: temp-dir
      emptyDir: {}