How to check which pod is causing the `CoreDNSErrorsHigh` alert in OCP 4?

Solution Verified - Updated -

Issue

  • How to check which pod is trying to resolve a nonexistent or malformed domain, causing SERVFAIL error in CoreDNS pods and consequently CoreDNSErrorsHigh alert in OpenShift?

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4

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