I have a secret created as an environment variable in k8s cluster.

Secret name: user-list

Below is what's inside of user-list:

USER_1: 10 bytes

With my limited knowledge on k8s, it looks like I can pull the values of USER_1 into values.yaml this way:

env:
  - name: SECRET_USERNAME_1
    valueFrom:
      secretKeyRef:
        name: user-list
        key: USER_1

My question is:

Is it possible to get USER_1 value into configmap.yaml ?

My configmap looks like below:

apiVersion: v1
kind: ConfigMap
metadata:
  name: user-test
data:
  user.properties: |
    connector.name: {{ USER_1 }} ---> I want to be able to pull USER_1 value here
    postgresql.array-mapping=AS_JSON
    decimal-default-scale=20
    decimal-mapping=ALLOW_OVERFLOW
    decimal-rounding-mode=HALF_DOWN