cm-demo2.yaml

apiVersion: v1
kind: Pod
metadata:
  name: testcm1-pod
spec:
  containers:
  - name: testcm1
    image: busybox
    command: ["/bin/sh", "-c", "env"]
    env:
    - name: DB_HOST
      valueFrom:
        configMapKeyRef:
          name: cm-demo4
          key: db.host
    - name: DB_PORT
      valueFrom:
        configMapKeyRef:
          name: cm-demo4
          key: db.port
    envFrom:
    - configMapRef:
        name: cm-demo2