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keycloak-pattern/docs/evidence/a1-jgroups-transport-block/06-partition-observed.txt
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DongHyeonkaandClaude Opus 5 2a98ef1090 docs: A-1 — sessions survive a JGroups partition but logout invalidation does not
Cutting TCP 7800 leaves cross-node refresh working (200), confirming sessions travel through PostgreSQL rather than the cluster transport. Logout is the opposite: the database row is deleted but the other node answers from its stale local cache, so the A-0 conclusion that invalidation rides the database is corrected here.

Two things the plan did not anticipate: a NetworkPolicy cannot sever an established connection because conntrack accepts it before policy evaluation, and Keycloak reports the partition through its readiness probe so the split node removes itself from the Service.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-04 11:52:49 +09:00

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관찰 시작: 11:42:03
+20초 suspected(k0 k1) = []
+40초 suspected(k0 k1) = []
+60초 suspected(k0 k1) = [0.0 0.0 0.0 0.0 ]
+80초 suspected(k0 k1) = []
+100초 suspected(k0 k1) = []
+120초 suspected(k0 k1) = []
+140초 suspected(k0 k1) = [0.0 ]
+160초 suspected(k0 k1) = [0.0 0.0 0.0 0.0 ]
=== 클러스터 뷰 변화 (최근 8분) ===
--- keycloak-0 ---
--- keycloak-1 ---