Kubernetes - Monitoring and Logging
You set up cluster monitoring but notice no metrics appear when running
kubectl top nodes. What is the most likely cause?You set up cluster monitoring but notice no metrics appear when running kubectl top nodes. What is the most likely cause?
medium📝 Troubleshoot Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Understand what provides metrics for 'kubectl top'
The metrics-server collects resource usage data for nodes and pods.Step 2: Identify why metrics might be missing
If metrics-server is missing or not running,kubectl topshows no data.Final Answer:
Metrics-server is not installed or running. -> Option CQuick Check:
Missing metrics = metrics-server issue [OK]
Quick Trick: No metrics? Check if metrics-server is running [OK]
Common Mistakes:
- Blaming kubectl version without checking metrics-server
- Assuming nodes are offline without verification
- Thinking pod labels affect node metrics
Master "Monitoring and Logging" in Kubernetes
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