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docs: correct the places where documents contradicted their own evidence

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An independent audit found ten documents printing values their evidence files do not contain. C-1 printed a session count of 0 where the evidence says 4, C-2 printed a success readback for a command that exited 1, and A-1 credited the conntrack flush with a split that the timestamps attribute to a pod restart four seconds earlier.

Also measured wal_writer_delay, which A-3 had asserted as matching without ever querying it, relabelled the A-6 control that moved 41 percent, noted A-8's nine-sample resolution, corrected D-1's RTO to the 41 seconds its own timeline shows, and added a correction banner to D-2. Every experiment document now links its evidence files with their real collection times, and the duplicate screenshots are documented as duplicates.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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DongHyeonka
2026-09-04 16:35:49 +09:00
co-authored by Claude Opus 5
parent 78b270559c
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docs/experiment-d2-version-upgrade.md
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@@ -7,6 +7,20 @@
선행: [`D-1`](experiment-d1-backup-restore.md) — **백업이 전제다** ·
[`A-8`](experiment-a8-rolling-restart.md) — 롤링 재시작이 안전하다는 것이 전제
> ## ★ 정정 — 이 문서의 결론은 조건부다
>
> 이 문서는 *"롤백이 안 된다"* 고 단정했다. 나중에
> [`후속 문서`](experiment-followup-untested-items.md) 에서 26.7.0 ↔ 26.7.3 을
> 시험하니 **롤백이 성공했다.**
>
> | 버전 차 | `databasechangelog` | 롤백 |
> |---|---|---|
> | 26.7.0 → 26.0 | 체크섬 불일치 | **불가** |
> | 26.7.0 ↔ 26.7.3 | **210 → 210, 변화 없음** | **가능** |
>
> **판단 기준은 버전 번호가 아니라 `databasechangelog` 의 행 수가 바뀌었는가다.**
> 아래 본문은 스키마가 바뀐 경우에 해당한다.
---
## 0. 결론부터
@@ -176,6 +190,21 @@ kubectl -n keycloak-lab set image statefulset/keycloak keycloak=quay.io/keycloak
---
---
## 증거 파일
**증거 수집 시각: 2026-09-04 15:00 – 16:15 KST** (파일 mtime 기준. 문서 상단의 시각 표기는 작성 시점이라 다를 수 있다.)
| 파일 | 종류 |
|---|---|
| [`01-pre-upgrade.txt`](evidence/d2-version-upgrade/01-pre-upgrade.txt) | 터미널 원문 |
| [`02-rollback-attempt.txt`](evidence/d2-version-upgrade/02-rollback-attempt.txt) | 터미널 원문 |
| [`03-roll-forward.txt`](evidence/d2-version-upgrade/03-roll-forward.txt) | 터미널 원문 |
| [`d2-upgrade-window.png`](evidence/d2-version-upgrade/d2-upgrade-window.png) | 스크린샷 |
파일별 상세는 [`evidence/d2-version-upgrade/README.md`](evidence/d2-version-upgrade/README.md).
## 7. 재현 절차 (명령어)
```bash