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K8s L4 K8S 1424 · 12 min

A cert-manager DNS01 renewal works in staging and fails in production

Credentials exist, yet the hardened runtime path cannot read the projected token at the path the solver image expects.

K8sPlatform ReliabilityLevel 4Pro12 min
Scenario

Production renewals fail only after enabling a stricter runtime class on solver pods while staging continues to pass.

What to check first
  • Identify the primary failure signal in the The Solver Got the Right Token and Its Runtime Class Refused the Path It Lived On 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

Inspect runtime-class file access and token projection paths before rotating DNS creds or changing challenge type.

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.