[Solved] Given this pod spec snippet, what environment variables will be available inside the container?envFrom: - configMapRef: name: app-configAssuming app-config contains keys API_URL and TIMEOUT. | Kubernetes

Kubernetes - ConfigMaps

Given this pod spec snippet, what environment variables will be available inside the container?

envFrom:
  - configMapRef:
      name: app-config

Assuming app-config contains keys API_URL and TIMEOUT.

AOnly TIMEOUT will be set as environment variable

BAPI_URL and TIMEOUT environment variables with their ConfigMap values

COnly API_URL will be set as environment variable

DNo environment variables will be set

Step-by-Step Solution

Solution:

Step 1: Understand envFrom with configMapRef
Using envFrom with configMapRef loads all keys from the ConfigMap as environment variables.
Step 2: Apply to given keys
Since app-config has API_URL and TIMEOUT, both become env vars.
Final Answer:
API_URL and TIMEOUT environment variables with their ConfigMap values -> Option B
Quick Check:
envFrom loads all keys = API_URL + TIMEOUT [OK]

Quick Trick: envFrom loads all ConfigMap keys as env vars [OK]

Common Mistakes:

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Given this pod spec snippet, what environment variables will be available inside the container?