upstream: a diagnostics episode follows health, and a peer fault carries its cause

2026-09-12 20:24:49 +02:00
parent 6e9a36903e
commit 08cdf86ecd
20 changed files with 1797 additions and 426 deletions
@@ -4,6 +4,12 @@ All notable changes to nxdns are recorded here. The format follows [Keep a Chang

 Sections are written by hand. Nothing here is generated from commit messages: the point of the file is to say what changed for an operator, which a commit subject rarely does.

+## [0.0.21] - 2026-09-12
+
+### Changed
+
+- **An upstream warning means the pool stopped trusting the endpoint.** A Diagnostics episode opens when an upstream reaches the health failure threshold and closes on the success that clears it, instead of one card per lost exchange. Failures during backoff raise the card's occurrence count. The episode detail and the `nxdns check` report name the concrete cause behind the classification, `SendFailed (cause BrokenPipe)`.
+
 ## [0.0.20] - 2026-09-12

 ### Fixed