After a failed SSID change, the portal UI log says 10:00:01, the back-end says 09:59:40, and the controller syslog says 10:02:12, with no shared request id. Why is a “who failed first” story from these lines unreliable?
Select an answer to reveal the explanation.
Short Explanation
Three wristwatches that disagree cannot referee a race—especially with no race bib. Without a monotonic request id, wall-clock stamps across UI, back-end, and controller mislead. Fix time sync and carry an ID before trusting “who first.”
Full Explanation
Distributed event diagnosis depends on either synchronized time or a shared correlation identifier. Large timestamp skew without a request id yields false causality stories. Sorting by filename or assuming one hop’s clock is gospel does not repair the diagnostic cue gap.