[Solved] Which command correctly updates a ConfigMap named app-config from a file config.yaml? — Ans: kubectl create configmap app-config --from-file=config.yaml --dry-run=client -o... | Kubernetes

Kubernetes - ConfigMaps

Which command correctly updates a ConfigMap named app-config from a file config.yaml?

Akubectl update configmap app-config --from-file=config.yaml

Bkubectl edit configmap app-config --from-file=config.yaml

Ckubectl replace configmap app-config --from-file=config.yaml

Dkubectl create configmap app-config --from-file=config.yaml --dry-run=client -o yaml | kubectl apply -f -

Step-by-Step Solution

Solution:

Step 1: Understand updating ConfigMap from file
Direct update requires creating new YAML and applying it.
Step 2: Use dry-run and apply for update
Command C creates new ConfigMap YAML from file and applies it, updating existing ConfigMap.
Final Answer:
kubectl create configmap app-config --from-file=config.yaml --dry-run=client -o yaml | kubectl apply -f - -> Option D
Quick Check:
Use create with dry-run + apply to update ConfigMap = C [OK]

Quick Trick: Use create with dry-run and apply to update ConfigMap [OK]

Common Mistakes:

Master "ConfigMaps" in Kubernetes

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Which command correctly updates a ConfigMap named app-config from a file config.yaml?