You want to add two labels tier=frontend and version=v2 to all pods with label app=web. Which command correctly does this?

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Kubernetes - Labels and Selectors

You want to add two labels tier=frontend and version=v2 to all pods with label app=web. Which command correctly does this?

Akubectl label pods -selector app=web tier=frontend version=v2

Bkubectl label pods --selector app=web tier=frontend version=v2

Ckubectl label pods -l app=web tier=frontend --overwrite version=v2

Dkubectl label pods --all tier=frontend version=v2

Step-by-Step Solution

Solution:

Step 1: Use label selector to target pods
The --selector or -l flag filters pods by label app=web.
Step 2: Add multiple labels in one command
You can add multiple labels by listing them separated by spaces after the resource selector.
Step 3: Choose the correct syntax
kubectl label pods --selector app=web tier=frontend version=v2 uses --selector and adds both labels correctly. kubectl label pods -selector app=web tier=frontend version=v2 is invalid because it uses a single dash for selector, kubectl label pods -l app=web tier=frontend --overwrite version=v2 misuses --overwrite, kubectl label pods --all tier=frontend version=v2 applies to all pods, not filtered.
Final Answer:
kubectl label pods --selector app=web tier=frontend version=v2 -> Option B
Quick Check:
Use --selector and list labels to add multiple [OK]

Quick Trick: Use --selector (-l) to target resources by label [OK]

Common Mistakes:

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