graph TD
    P[Prometheus+Grafana] -->|监控指标| LB
    subgraph 高可用负载层
        LB[VIP:192.168.1.200] --> HA1[HAProxy+Keepalived lb1]
        LB --> HA2[HAProxy+Keepalived lb2]
    end
    HA1 --> DB1
    HA1 --> DB2
    HA1 --> DB3
    HA2 --> DB1
    HA2 --> DB2
    HA2 --> DB3
    subgraph Galera集群
        DB1[MariaDB Node1] <--> DB2[MariaDB Node2]
        DB2 <--> DB3[MariaDB Node3]
        DB3 <--> DB1
    end