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K8s L6 K8S 1590 · 11 min

A mesh egress policy updates and one sidecar still allows the old host because cluster warmup restores the retired SNI match

The policy is current, but one sidecar still rebuilds an older SNI match during cluster warmup.

K8sPlatform ReliabilityLevel 6Pro11 min
Scenario

One sidecar still allows the old host after mesh egress policy updates.

What to check first
  • Identify the primary failure signal in the The New Border Checkpoint Opened and One Guard Returned From Break Holding the Checklist Printed Before the Embassy Changed Its Name 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 warmup cluster state before reissuing policy.

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.