[kubernetes-users] Empty downward API outputs

[Xiaoyi Shi]

Hi all,

I've configured my deployment to use downwards API to expose kubernetes 
info to binary in containers through environment.  
However, some fields are empty after deployment.

Here is the env section of my container:
        env:
        - name: KUBERNETES_NAMESPACE
          valueFrom:
            fieldRef: {fieldPath: metadata.namespace}
        - name: KUBERNETES_NODE
          valueFrom:
            fieldRef: {fieldPath: spec.nodeName}
        - name: KUBERNETES_POD
          valueFrom:
            fieldRef: {fieldPath: metadata.name}
        - name: KUBERNETES_POD_IP
          valueFrom:
            fieldRef: {fieldPath: status.podIP}
        - name: KUBERNETES_SERVICE_ACCOUNT
          valueFrom:
            fieldRef: {fieldPath: spec.serviceAccountName}

kubectl describe pod backend-qa-863441930-g8r7j:
    Environment:
      KUBERNETES_NAMESPACE:        default (v1:metadata.namespace)
      KUBERNETES_NODE:              (v1:spec.nodeName)
      KUBERNETES_POD:              backend-qa-863441930-g8r7j 
(v1:metadata.name)
      KUBERNETES_POD_IP:            (v1:status.podIP)
      KUBERNETES_SERVICE_ACCOUNT:   (v1:spec.serviceAccountName)

Did I miss anything here?

Thanks!
Xiaoyi

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