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K8s L4 K8S 1483 · 9 min

A CoreDNS autopath optimization speeds most lookups and one namespace loops because the search path still includes its old service suffix

Queries resolve elsewhere, but one namespace keeps retrying with a search path that no longer matches its moved service names.

K8sPlatform ReliabilityLevel 4Pro9 min
Scenario

A migrated namespace sees intermittent DNS loops after autopath optimization is enabled cluster-wide.

What to check first
  • Identify the primary failure signal in the The Cluster Learned a Faster Path and One Namespace Kept Asking for the Address It Used Before the Move scenario.
  • Separate visible symptoms from the underlying technical dependency.
  • Describe the safest recovery path and the follow-up prevention work.
Checking checklist
  1. Summarize the current impact and the last known change.
  2. Collect direct evidence from logs, runtime state, and configuration before changing anything.
  3. Separate immediate recovery from permanent prevention work.
Recovery and prevention

Compare namespace search paths before restarting CoreDNS or rewriting services.

Questions worth viewing together
Should I translate commands, logs, or product names?

No. Keep commands, logs, file names, APIs, and product names unchanged, then explain the reasoning in the selected UI language.

What should the answer focus on?

State the root cause, the evidence that supports it, and the safest recovery direction.

Why can the scenario remain in the original language?

The source scenario is treated as an incident artifact. Guidance, checklist, hints, and explanations can be localized around it.