DongHyeonkaandClaude Opus 5
b2963105a8
The keycloak project ended with four open questions that design could not
settle. A two-VM lab was built to answer them by measurement, and this is
that material: 26 experiments, 125 raw command outputs, 22 browser captures.
Follows the import procedure in README.md.
source/ the originating repository verbatim — 78 documents, 28 SVGs,
8 manifests, plus .source-revision recording the commit
final/ the SSOT
document.md 729 lines written from the 29 experiment documents, not
concatenated: what was predicted, what was measured, and
where the measurement itself was wrong
evidence/raw 125 outputs, flattened to <experiment>__<file> because
the originals collided (01-baseline.txt appeared three
times) and the audit only globs the top level
evidence/meta one per raw file; command and exitCode are null and the
README says why rather than inventing them
evidence/browser 22 captures
assets/ three diagrams through techviz
.techviz/ their VizSpecs
A separate project rather than an addition to keycloak: the B-layer answers
that project's four questions, but the A, C and D layers are about cluster
failure, SSO and operations, and one document.md should hold one subject.
The four question records there can point here through 관계.
Recorded rather than papered over: only three of the 28 diagrams were
remade. The repository forbids hand-drawn SVG and forbids titles inside the
canvas; all 28 originals carry both, so converting them is redrawing, not
reformatting. They stay in source/ and the gap is written into the document.
verify-pipeline.py passes. audit-records.py reports no issues.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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21 lines
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[바인딩] 같은 컴팩트 생성자에 들어가는 세 입력
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transactions=true 바인딩 성공, transactions=true changeStreams=false requiredSecondaries=2
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change-streams=true 바인딩 성공, transactions=false changeStreams=false requiredSecondaries=2
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required-secondaries=-1 바인딩 실패, MongoOperationRejectedException: the required secondary count must not be negative; -1 is
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서버 : mongod 8.0.16, 관측 토폴로지 STANDALONE
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CHANGE_STREAM : isStable=false
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사유 : {reason=topology is STANDALONE, which has no oplog}
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[출하 배선] MongoStartupValidator(..., properties.changeStreams())
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validate() -> 통과
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[시험 배선] MongoStartupValidator(..., true)
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validate() -> MongoOperationRejectedException: change streams are enabled but unavailable here: {reason=topology is STANDALONE, which has no oplog}; a REPLICA_SET, SHARDED or ATLAS topology is required
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[source 직접 생성] SpringReactiveChangeStreamSource.open()
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-> MongoCommandException
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Command execution failed on MongoDB server with error 40573 (Location40573): 'The $changeStream stage is only supported on replica sets' on server 127.0.0.1:57017. The full response is {"ok": 0.0, "errmsg": "The $changeStream stage is only supported on replica sets", "code": 40573, "codeName": "Location40573"}
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[복구 정책] MongoChangeStreamRecoveryPolicy.onFailure(...)
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-> MongoChangeStreamRecoveryDecision[state=FAILED, autoResume=false, requiredRunbook=docs/mongodb/runbooks/failover.md]
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