Kubernetes - kubectl Essential Commands
You want to delete all pods with the label
app=frontend. Which command correctly deletes only those pods?You want to delete all pods with the label app=frontend. Which command correctly deletes only those pods?
hard📝 Best Practice Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand label selector syntax
To delete pods by label, use the--selectoror-lflag with the label key=value.Step 2: Identify correct command
kubectl delete pods --selector app=frontend uses--selector app=frontend, which is the correct full flag. kubectl delete -l app=frontend uses-lbut misses the resource typepods.Step 3: Confirm other options
kubectl delete pods --all deletes all pods, not filtered. kubectl delete pods app=frontend is invalid syntax.Final Answer:
kubectl delete pods --selector app=frontend -> Option CQuick Check:
Use --selector or -l to filter pods by label [OK]
Quick Trick: Use --selector or -l flag to delete by label [OK]
Common Mistakes:
- Using --all deletes everything, not filtered
- Incorrect syntax without --selector or -l
- Confusing label with resource name
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