Question

You maintain a Deployment for a payments service. The team stores 12 application settings in a ConfigMap named 'payments-config' and wants ALL of them injected as environment variables into the container without listing each key individually in the Pod spec. Which configuration achieves this?

Accepted Answer

Add an 'envFrom' entry with 'configMapRef' pointing to 'payments-config' in the container spec.

Answer

Add 12 separate 'env' entries, each with a 'valueFrom.configMapKeyRef' referencing 'payments-config'.

Answer

Mount 'payments-config' as a volume at '/etc/config' so the keys become environment variables automatically.

Answer

Add an 'envFrom' entry with 'secretRef' pointing to 'payments-config' in the container spec.