If a pod references a ConfigMap as environment variables, what is the effect of updating the ConfigMap without restarting the pod?

easy📝 Conceptual Q1 of 15

Kubernetes - ConfigMaps

AThe pod continues using the old environment variable values until restarted

BThe pod automatically reloads the new environment variables immediately

CThe pod crashes and restarts to apply the new ConfigMap values

DThe pod updates environment variables only after a manual config reload command

Step-by-Step Solution

Solution:

Step 1: Understand environment variable injection
Environment variables from ConfigMaps are injected at pod start time.
Step 2: Effect of ConfigMap update
Updating the ConfigMap does not affect running pods' environment variables until they restart.
Final Answer:
The pod continues using the old environment variable values until restarted -> Option A
Quick Check:
Env vars are static per pod lifecycle [OK]

Quick Trick: Env vars from ConfigMaps update only after pod restart [OK]

Common Mistakes:

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