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
parent 9c3cde457e
commit 2a98ef1090
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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 ---