flowchart LR
  subgraph Users["Пользователи/браузеры"]
    U1[User A]
    U2[User B]
  end

  subgraph Edge["Балансировщик / Reverse Proxy"]
    LB[(LB: 5601/tcp)]
  end

  subgraph OSD["OSD-узлы (stateless)"]
    D1[OpenSearch Dashboards #1]
    D2[OpenSearch Dashboards #2]
  end

  subgraph OS["Кластер OpenSearch"]
    CM[(Cluster Manager)]
    C1[(Data/ingest)]
    C2[(Data/ingest)]
  end

  subgraph Ingest["Слой приёма логов"]
    FB[Fluent Bit / Filebeat]
    LS[Logstash]
  end

  U1 -- HTTP(S) --> LB --> D1
  U2 -- HTTP(S) --> LB --> D2
  D1 -- HTTPS (9200) --> OS
  D2 -- HTTPS (9200) --> OS
  FB -- 5044/HTTP(S) --> LS -- HTTPS (9200) --> OS