# Nginx Upstream 配置
# 高可用负载均衡

# API网关集群
upstream gateway_cluster {
    # 负载均衡策略: 轮询 (默认)
    # 其他选项: ip_hash, least_conn, hash $request_uri
    
    least_conn;  # 最少连接数策略
    
    server 192.168.1.101:9000 weight=1 max_fails=3 fail_timeout=30s;
    server 192.168.1.102:9000 weight=1 max_fails=3 fail_timeout=30s backup;
    
    # 健康检查
    keepalive 32;
}

# Nacos集群
upstream nacos_cluster {
    server 192.168.1.101:8848 weight=1;
    server 192.168.1.102:8848 weight=1;
    server 192.168.1.103:8848 weight=1;
    
    keepalive 16;
}

# Sentinel集群
upstream sentinel_cluster {
    server 192.168.1.101:8880 weight=1;
    server 192.168.1.102:8880 weight=1;
    server 192.168.1.103:8880 weight=1;
    
    keepalive 16;
}

# MinIO API集群 (统一使用9100端口)
upstream minio_cluster {
    server 192.168.1.101:9100 weight=1;
    server 192.168.1.102:9100 weight=1;
    server 192.168.1.103:9000 weight=1 backup;

    keepalive 16;
}

# MinIO控制台集群 (统一使用9101端口，Node-03使用9001)
upstream minio_console_cluster {
    server 192.168.1.101:9101 weight=1;
    server 192.168.1.102:9101 weight=1;
    server 192.168.1.103:9001 weight=1 backup;

    keepalive 16;
}