node.js - docker : MongooseError [MongooseServerSelectionError]: getaddrinfo ENOTFOUND mongo

Question

我正在尝试将 mongodb 与我在 docker 容器中的应用程序连接起来。我正在使用 Mongoose 包，这是我写的代码

mongoose.connect("mongodb://mongo:27016/IssueTracker", { useNewUrlParser: true,useUnifiedTopology: true },(err: Error) => {
    err ? console.log(err) : console.log("Mongodb database connected");
}); 

这是我的 docker-compose.yml文件

version: "3"
services:
    app:
        container_name: IssueTracker
        restart: always
        build: .
        ports: 
            - '9000:9000'
        links:
            - mongo
    mongo:
        container_name: mongo
        image: mongo
        ports:
            - '27017:27016'

这是我的 Dockerfile

FROM node:13

WORKDIR /app

COPY package*.json ./

RUN npm install

COPY . .

EXPOSE 9000

RUN ["npm","run","dev"]

这是我尝试运行时遇到的错误 docker-compose up在我的 docker cmdline 中

server started on port 9000
MongooseError [MongooseServerSelectionError]: getaddrinfo ENOTFOUND mongo
        at new MongooseServerSelectionError (/app/node_modules/mongoose/lib/error/serverSelection.js:22:11)
        at NativeConnection.Connection.openUri (/app/node_modules/mongoose/lib/connection.js:823:32)
        at Mongoose.connect (/app/node_modules/mongoose/lib/index.js:333:15)
        at Object.<anonymous> (/app/src/app.ts:9:10)
        at Module._compile (internal/modules/cjs/loader.js:1123:30)
        at Module.m._compile (/app/node_modules/ts-node/src/index.ts:839:23)
        at Module._extensions..js (internal/modules/cjs/loader.js:1143:10)
        at Object.require.extensions.<computed> [as .ts] (/app/node_modules/ts-node/src/index.ts:842:12)
        at Module.load (internal/modules/cjs/loader.js:972:32)
        at Function.Module._load (internal/modules/cjs/loader.js:872:14)
        at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)
        at main (/app/node_modules/ts-node/src/bin.ts:227:14)
        at Object.<anonymous> (/app/node_modules/ts-node/src/bin.ts:513:3)
        at Module._compile (internal/modules/cjs/loader.js:1123:30)
        at Object.Module._extensions..js (internal/modules/cjs/loader.js:1143:10)
        at Module.load (internal/modules/cjs/loader.js:972:32) {
      reason: TopologyDescription {
        type: 'Single',
        setName: null,
        maxSetVersion: null,
        maxElectionId: null,
        servers: Map(1) { 'mongo:27016' => [ServerDescription] },
        stale: false,
        compatible: true,
        compatibilityError: null,
        logicalSessionTimeoutMinutes: null,
        heartbeatFrequencyMS: 10000,
        localThresholdMS: 15,
        commonWireVersion: null
      },
      [Symbol(mongoErrorContextSymbol)]: {}
    }

试图检查我在 docker 中的任何容器是否正在使用提到的端口，以便可能会产生此错误，并且没有人使用相同的端口。我是 docker 新手，所以不太了解它，我尝试查看一些在线解决方案，但没有帮助

Answer 1

尝试创建和使用网络而不是 link

version: "3"
services:
    app:
        container_name: IssueTracker
        restart: always
        build: .
        ports: 
            - '9000:9000'
        networks: #here
            - my-network
    mongo:
        container_name: mongo
        image: mongo
        ports:
            - '27017:27016'
        networks: #here
            - my-network 
    
    networks: #here
        my-network:
            driver: bridge