CREATE TABLE `machine_node` (
    `id` bigint AUTO_INCREMENT NOT NULL COMMENT '流水號',
    `create_time` bigint DEFAULT 0 NOT NULL COMMENT '創建時間',
    `update_time` bigint DEFAULT 0 NOT NULL COMMENT '更新時間',
    `host_name` varchar(200) DEFAULT '' NOT NULL COMMENT 'host name',
    PRIMARY KEY (`id`)
) ENGINE=InnoDB COMMENT='machineID Assigner for Generator';