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症狀: SentryDown/OllamaDown 告警觸發 incident,但 playbook 搜索 回傳 NO_MATCH,即使 alert_names 完全一致。 根本原因: Jaccard 加權計算中,affected_services 存的是 Prometheus instance IP (192.168.0.110:9000),而 Playbook 存的是服務名 (sentry), 導致 services 維度得 0,最終 0.35 < min_similarity=0.4。 修正: alert_names 有交集時直接通過,不受其他維度拉低分數影響。 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>