init: 클린 아키텍처 백엔드

2026-07-24 14:29:36 +09:00
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+---
+title: Runbook — AUTH_ISSUER_MISMATCH (발급자 불일치)
+category: AUTH
+error_codes: [AUTH_ISSUER_MISMATCH]
+severity: P2
+owner: oncall
+last_updated: 2026-06-15
+status: stub
+---
+
+# Runbook: AUTH_ISSUER_MISMATCH (`runbook://auth/issuer-mismatch`)
+
+## Symptoms
+
+- HTTP 401 with `error.code=AUTH_ISSUER_MISMATCH`
+- Token `iss` claim does not match configured expected issuer
+
+## Diagnosis
+
+- Compare token `iss` against `spring.security.oauth2.resourceserver.jwt.issuer-uri`
+- Check if IdP environment changed
+
+## Action
+
+- Update issuer config if IdP migrated
+- Reject tokens from unexpected issuers
+
+## Escalation
+
+- Escalate to platform-security if unexpected issuer detected
+
+---
+
+> **Stub**: Phase D2 — author body after domain adoption. (feature-operational-runbook-contract D9)