卷未安装在POD上

Question

创建了configmap并将其添加到我的yaml文件中，并且在部署POD之后，该卷未安装在该容器上

apiVersion: v1
kind: Pod
metadata:
  name: appname
spec:
  containers:
  -containername   
    ports:
    - containerPort: portno
    resources: {}
 volumeMounts:
    - mountPath: mount path
      subPath: filename
      name: volume name
  volumes:
    - name: volumename
      configMap:
        name: configname
        items:
        - key: filename
          path: filename