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You tried to label a pod with kubectl label pod mypod env=prod but got an error. What is a likely cause?

medium📝 Troubleshoot Q6 of 15
Kubernetes - Labels and Selectors
You tried to label a pod with kubectl label pod mypod env=prod but got an error. What is a likely cause?
AThe pod 'mypod' does not exist
BThe label key 'env' is invalid
CYou need to use 'kubectl set label' instead
DLabels cannot be added to pods
Step-by-Step Solution
Solution:

  1. Step 1: Understand error cause

    If the pod does not exist, labeling fails with an error.

  2. Step 2: Check other options

    Label key 'env' is valid; 'kubectl label' is correct command; pods can have labels.

  3. Final Answer:

    The pod 'mypod' does not exist -> Option A

  4. Quick Check:

    Label error usually means resource missing = B [OK]
Quick Trick: Check resource existence before labeling [OK]
Common Mistakes:
  • Using wrong command for labeling
  • Assuming label keys are invalid
  • Thinking pods cannot have labels

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