DongHyeonkaandClaude Opus 5
98a74e90a5
The forward upgrade to 26.7.3 was zero downtime across 87 samples, and since databasechangelog stayed at 210 the rollback to 26.7.0 also succeeded, which narrows D-2's conclusion: rolling back fails when the schema moved, not because of the version number. The row count is the check. Role changes never reach the upstream through request repetition; the session is a snapshot taken at login and only a new session picks up the new claim. Auditing the docs also surfaced that Prometheus scrapes only keycloak, kubelet, node-exporter and itself, so the B-layer experiments have no metrics to screenshot rather than missing screenshots. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
31 lines
2.6 KiB
XML
31 lines
2.6 KiB
XML
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<style>
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.t{font-size:13px;fill:#1f2328}.s{font-size:11px;fill:#59636e}.h{font-size:14px;font-weight:600;fill:#1f2328}
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.r{font-size:12px;fill:#cf222e;font-weight:600}.g{font-size:12px;fill:#1a7f37;font-weight:600}
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.box{fill:#fff;stroke:#8c959f;stroke-width:1.4;rx:6}
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.dead{fill:#fff5f5;stroke:#cf222e;stroke-width:1.6;stroke-dasharray:5 3;rx:6}
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.ln{stroke:#59636e;stroke-width:1.4;fill:none;marker-end:url(#a)}
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.bad{stroke:#cf222e;stroke-width:1.6;stroke-dasharray:5 3;fill:none;marker-end:url(#b)}
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</style>
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<defs>
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<marker id="a" markerWidth="9" markerHeight="9" refX="8" refY="4.5" orient="auto"><path d="M0,0 L9,4.5 L0,9 z" fill="#59636e"/></marker>
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<marker id="b" markerWidth="9" markerHeight="9" refX="8" refY="4.5" orient="auto"><path d="M0,0 L9,4.5 L0,9 z" fill="#cf222e"/></marker>
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</defs>
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<text class="h" x="16" y="24">D-1 · 빈 데이터베이스가 200 을 냈다</text>
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<rect class="box" x="30" y="46" width="180" height="46"/><text class="t" x="120" y="66" text-anchor="middle">pg_dump</text><text class="s" x="120" y="82" text-anchor="middle">395KB · 101 테이블 · 세션 포함</text>
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<path class="ln" d="M210,69 L270,69"/>
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<rect class="dead" x="270" y="42" width="180" height="54"/>
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<text class="r" x="360" y="64" text-anchor="middle">DROP SCHEMA CASCADE</text><text class="s" x="360" y="84" text-anchor="middle">남은 테이블 0</text>
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<path class="ln" d="M450,69 L510,69"/>
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<rect class="ok" x="510" y="42" width="160" height="54"/>
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<text class="g" x="590" y="64" text-anchor="middle">복구 1초</text><text class="s" x="590" y="84" text-anchor="middle">오류 0건 · 재시작 0회</text>
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<rect class="box" x="30" y="118" width="640" height="76"/>
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<text class="t" x="350" y="140" text-anchor="middle">테이블이 0개일 때 무엇이 깨졌는가 — 전부가 아니다</text>
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<text class="g" x="350" y="162" text-anchor="middle">/protocol/openid-connect/certs → 200 (realm 키가 캐시에 있다)</text>
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<text class="r" x="350" y="182" text-anchor="middle">/.well-known → 500 토큰 발급 → 400</text>
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<text class="r" x="350" y="232" text-anchor="middle">헬스체크는 "DB 가 살아 있다"만 보고 "데이터가 있다"는 안 본다</text>
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<text class="s" x="350" y="250" text-anchor="middle">RPO = 백업 주기 + A-3 의 synchronous_commit 손실 · 덤프는 같은 호스트 /tmp 에 있었다</text>
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