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docs(aar): mrtc DNS outage AAR; #0053 takes the real-timestamp commits too

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The five-day group-call outage from the deleted mrtc A record had no management
record at all - the fix, the diagnosis path, and the lesson lived only in the
session. The AAR records why nothing alarmed (DNS-01 certs and pods stay green
without an A record), the exact dating via token-vs-join counts, and the
countermeasure that already shipped (notfallhandbuch dns-soll.md + pruefe-dns.sh).

gruppenpruefung's nine real-timestamp findings join #0053's history pass -
same class, same decision, recorded so the next session repairs nothing
unilaterally.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Thore Cimbal
2026-08-17 12:00:00 +00:00
co-authored by Claude Opus 4.8
parent 2e9396b14c
commit 5ec4aa702e
3 changed files with 78 additions and 1 deletions
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STATUS.md
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@@ -57,7 +57,8 @@ _none active_
| [0017](docs/adr/0017-split-dns-cfgmon-vier-zonen.md) | accepted | 0017 — Split-DNS auf CFGMON: vier Zonen statt einer, je Zone begründet |
| [0018](docs/adr/0018-ki-geraeuschunterdrueckung-clientseitig-opt-in.md) | accepted | 0018 — KI-Geräuschunterdrückung in threadnet-call: client-seitig, opt-in, selbst ausgeliefert |
## Open AARs (2)
## Open AARs (3)
- [AAR — Refinement, Betrieb voranbringen, Git-Historie anonymisiert](docs/aar/2026-08-09-refinement-und-betrieb.md)
- [AAR — `@apo` konnte nicht telefonieren: fehlende Synapse-`profiles`-Zeile](docs/aar/2026-08-11-apo-calls-profile-zeile.md)
- [AAR — Gruppen-Calls fünf Tage tot: `mrtc`-A-Record bei der Zonen-Bereinigung gelöscht](docs/aar/2026-08-16-mrtc-dns-record.md)