轻量级m2m-iotagent无法连接到mongodb

Question

我正在使用FIWARE平台上的LWM2M设备（使用Orion CB）在IoT上建立演示。但是，lightweightm2m-iotagent无法连接到mongodb。知道为什么会这样吗？以下是我遇到的错误：

{
    "message": "Cannot read property 'findOne' of undefined",
    "name": "TypeError"
}

我正在使用docker-compose文件（如下）启动所有服务。

version: "3.1"

services:
        mongo:
                image: mongo:3.2
                command: --nojournal
                ports: 
                 - "27017:27017"
                expose:
                 - "27017"
        orion:
                image: fiware/orion
                links:
                 - mongo
                ports: 
                 - "1026:1026"
                command: -dbhost mongo -logLevel DEBUG
                depends_on:
                 - mongo
                expose: 
                 - "1026"
        lightweightm2m-iotagent:
                image: telefonicaiot/lightweightm2m-iotagent
                hostname: idas
                links:
                 - orion
                expose: 
                 - "4041"
                 - "5684"
                ports: 
                 - "4041:4041"
                 - "5684:5684/udp"
        mosquitto:
                image: ansi/mosquitto
                ports: 
                 - "1883:1883"
                expose: 
                 - "1883"

Answer 1

通过添加以下内容（在lightmm2m-iotagent定义中）解决了该问题

environment: 
   - IOTA_MONGO_HOST=mongo