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After upgrading Linkerd, you find that metrics are missing from the dashboard. What should you check first?

medium📝 Analysis Q7 of 15
Microservices - Service Mesh
After upgrading Linkerd, you find that metrics are missing from the dashboard. What should you check first?
ARestart the Kubernetes API server
BVerify that the Linkerd proxies are running and connected
CDelete all pods in the cluster
DDisable TLS encryption
Step-by-Step Solution
Solution:

  1. Step 1: Confirm proxy status

    Metrics depend on proxies running and connected to the control plane.

  2. Step 2: Exclude unrelated actions

    Restarting API server, deleting pods, or disabling TLS are not first steps.

  3. Final Answer:

    Verify that the Linkerd proxies are running and connected -> Option B

  4. Quick Check:

    Metrics require active proxies [OK]
Quick Trick: Check proxies first if metrics disappear [OK]
Common Mistakes:
MISTAKES
  • Restarting unrelated components first
  • Deleting pods unnecessarily
  • Disabling security features without cause

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