{
    "summary": [
        {
            "name": "node_metrics",
            "title": "节点系统指标",
            "primary": ["id"],
            "catelog": "indication"
        }
    ],
    "fields": [
        {"name": "id", "title": "记录ID", "type": "str", "length": 32, "nullable": "no"},
        {"name": "node_id", "title": "节点ID", "type": "str", "length": 32, "nullable": "no"},
        {"name": "cpu_percent", "title": "CPU使用率(%)", "type": "float", "length": 5, "dec": 1},
        {"name": "mem_percent", "title": "内存使用率(%)", "type": "float", "length": 5, "dec": 1},
        {"name": "mem_used_mb", "title": "已用内存(MB)", "type": "int"},
        {"name": "mem_total_mb", "title": "总内存(MB)", "type": "int"},
        {"name": "disk_percent", "title": "磁盘使用率(%)", "type": "float", "length": 5, "dec": 1},
        {"name": "disk_used_gb", "title": "已用磁盘(GB)", "type": "float", "length": 8, "dec": 1},
        {"name": "disk_path", "title": "磁盘挂载点", "type": "str", "length": 128},
        {"name": "load_1m", "title": "1分钟负载", "type": "float", "length": 5, "dec": 2},
        {"name": "load_5m", "title": "5分钟负载", "type": "float", "length": 5, "dec": 2},
        {"name": "load_15m", "title": "15分钟负载", "type": "float", "length": 5, "dec": 2},
        {"name": "net_rx_mb", "title": "网络接收(MB)", "type": "float", "length": 10, "dec": 1},
        {"name": "net_tx_mb", "title": "网络发送(MB)", "type": "float", "length": 10, "dec": 1},
        {"name": "process_count", "title": "进程数", "type": "int"},
        {"name": "collected_at", "title": "采集时间", "type": "datetime", "nullable": "no"}
    ],
    "indexes": [
        {"name": "idx_nm_node", "idxtype": "index", "idxfields": ["node_id"]},
        {"name": "idx_nm_time", "idxtype": "index", "idxfields": ["collected_at"]}
    ]
}