Mongoose 连接到 docker 中的 mongo

Question

I'm trying to connect to mongo in docker from nodejs running also in docker. Here is my configuration. What's wrong with it?

docker-compose

  version: '3'

  networks:
    velocity:

  services:
    mongo-main-gate:
      image: mongo
      volumes:
        - ./mongo:/data/db
      networks:
        - velocity

    main-gate:
      build: .
      environment:
        - PORT=${PORT}
        - PROD=${PROD}
        - HOST=${HOST}
        - MONGO_URI=${MONGO_URI}
        - RPC_NODE_URL=${RPC_NODE_URL}
      ports:
        - ${EXT_PORT}:${PORT}
      depends_on:
        - mongo-main-gate
      networks:
        - velocity

.env

PORT=3000
PROD="true"
HOST=0.0.0.0
MONGO_URI="mongodb://mongo-main-gate:27017/maingate"
EXT_PORT=8080
RPC_NODE_URL="https://node.funcoin.io"

connect function

const mongoose = require('mongoose');

const callback = (err) => {
  if (err) {
    console.log(err.message);
  } else {
    console.log('Succesfully Connected!');
  }
};

const init = () => {
  mongoose.Promise = global.Promise;
  console.info('INIT', process.env.MONGO_URI)
  mongoose.connect(
    process.env.MONGO_URI || 'mongodb://localhost:27017/maingate',
    { useCreateIndex: true, useNewUrlParser: true },
    callback
  );
};

module.exports = {
  init,
  callback,
};

Container returns Succesfully Connected!

But when trying to add users, I receive

main-gate_1        | {"level":50,"time":1587804410796,"pid":1,"hostname":"a1aad352ee4f","reqId":"cc655a95-45fb-4328-9e27-99283a393852","req":{"method":"GET","url":"/generate/mocks","hostname":"0.0.0.0:8080","remoteAddress":"172.24.0.1","remotePort":43686},"res":{"statusCode":500},"err":{"type":"MongoError","message":"Invalid namespace specified 'maingate\".users'","stack":"MongoError: Invalid namespace specified 'maingate\".users'\n    at Connection.<anonymous> (/usr/src/app/node_modules/mongodb/lib/core/connection/pool.js:450:61)\n    at Connection.emit (events.js:198:13)\n    at processMessage (/usr/src/app/node_modules/mongodb/lib/core/connection/connection.js:384:10)\n    at Socket.<anonymous> (/usr/src/app/node_modules/mongodb/lib/core/connection/connection.js:553:15)\n    at Socket.emit (events.js:198:13)\n    at addChunk (_stream_readable.js:288:12)\n    at readableAddChunk (_stream_readable.js:269:11)\n    at Socket.Readable.push (_stream_readable.js:224:10)\n    at TCP.onStreamRead [as onread] (internal/stream_base_commons.js:94:17)","ok":0,"errmsg":"Invalid namespace specified 'maingate\".users'","code":73,"codeName":"InvalidNamespace","name":"MongoError"},"msg":"Invalid namespace specified 'maingate\".users'","v":1}

Answer 1

You have some weird quoting going on that most likely your application is generating. Doesn't look like this has anything to do with docker.