NodeJS中的NodeJS Mongodb compose = ECONNREFUSED

Question

我试图通过docker-compose建立一个与MongoDB容器链接的Node.JS容器,但系统地node.js返回一个ECONNREFUSED错误.

错误

nodejs_1   | /code/node_modules/mongoose/node_modules/mongodb/lib/server.js:228
nodejs_1   |         process.nextTick(function() { throw err; })
nodejs_1   |                                   
nodejs_1   | Error: connect ECONNREFUSED
nodejs_1   |     at exports._errnoException (util.js:746:11)
nodejs_1   |     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1010:19)

NodeJS代码

var db = 'mongodb://database:27017/wondrapi';
mongoose.connect(db);

泊坞窗,compose.yml

web:
  build: ./web
  ports:
    - "8080:80"
  links:
    - nodejs
  volumes:
    - ./web:/usr/share/nginx/html:ro
nodejs:
  build: ./api
  ports:
    - "8081:3000"
  links:
    - database
  command: npm start
database:
  image: mongo
  volumes:
    - db:/data/db
  ports:
    - 27017

Dockerfile(./ api)

FROM node

ADD package.json /code/
WORKDIR /code
RUN npm install
ADD . /code

我该如何解决错误？

Answer 1

我解决了我的问题:

我尝试在mongodb服务器完全启动之前设置我的连接(从节点)到mongodb(第一次启动需要5/6秒).

因此,在mongo接受请求之前,我只需要在节点的每个请求之前用1秒重试连接几次(3/4次).

var connectWithRetry = function() {
    return mongoose.connect(db, function(err) {
        if (err) {
            console.error('Failed to connect to mongo on startup - retrying in 1 sec', err);
            setTimeout(connectWithRetry, 1000);
        }
    });
};
connectWithRetry();