Mongo ECONNREFUSED错误:使用docker-compose来启动一个带有后端应用程序的容器和一个带有Mo

Question

我有一个自定义的docker图像为我的应用程序的后端。我有一个yaml文件，运行我的应用程序图像和mongo图像。但是，当我在yml文件上使用docker-compose时，我得到以下错误(大约20秒，容器开始运行):

(node:33) [MONGOOSE] DeprecationWarning: Mongoose: the `strictQuery` option will be switched back to `false` by default in Mongoose 7. Use `mongoose.set('strictQuery', false);` if you want to prepare for this change. Or use `mongoose.set('strictQuery', true);` to suppress this warning.
(Use `node --trace-deprecation ...` to show where the warning was created)
Server listening on port 3000
/cloudband/node_modules/mongoose/lib/connection.js:825
const serverSelectionError = new ServerSelectionError();
^
MongooseServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017
at Connection.openUri (/cloudband/node_modules/mongoose/lib/connection.js:825:32)
at /cloudband/node_modules/mongoose/lib/index.js:409:10
at /cloudband/node_modules/mongoose/lib/helpers/promiseOrCallback.js:41:5
at new Promise (<anonymous>)
at promiseOrCallback (/cloudband/node_modules/mongoose/lib/helpers/promiseOrCallback.js:40:10)
at Mongoose._promiseOrCallback (/cloudband/node_modules/mongoose/lib/index.js:1262:10)
at Mongoose.connect (/cloudband/node_modules/mongoose/lib/index.js:408:20)
at Object.<anonymous> (/cloudband/server/server.js:15:4)
at Module._compile (node:internal/modules/cjs/loader:1239:14)
at Module._extensions..js (node:internal/modules/cjs/loader:1293:10) {
reason: TopologyDescription {
type: 'Unknown',
servers: Map(1) {
'localhost:27017' => ServerDescription {
address: 'localhost:27017',
type: 'Unknown',
hosts: [],
passives: [],
arbiters: [],
tags: {},
minWireVersion: 0,
maxWireVersion: 0,
roundTripTime: -1,
lastUpdateTime: 28094812,
lastWriteDate: 0,
error: MongoNetworkError: connect ECONNREFUSED 127.0.0.1:27017
at connectionFailureError (/cloudband/node_modules/mongodb/lib/cmap/connect.js:387:20)
at Socket.<anonymous> (/cloudband/node_modules/mongodb/lib/cmap/connect.js:310:22)
at Object.onceWrapper (node:events:628:26)
at Socket.emit (node:events:513:28)
at emitErrorNT (node:internal/streams/destroy:151:8)
at emitErrorCloseNT (node:internal/streams/destroy:116:3)
at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
cause: Error: connect ECONNREFUSED 127.0.0.1:27017
at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1495:16) {
errno: -111,
code: 'ECONNREFUSED',
syscall: 'connect',
address: '127.0.0.1',
port: 27017
},
[Symbol(errorLabels)]: Set(1) { 'ResetPool' }
},
topologyVersion: null,
setName: null,
setVersion: null,
electionId: null,
logicalSessionTimeoutMinutes: null,
primary: null,
me: null,
'$clusterTime': null
}
},
stale: false,
compatible: true,
heartbeatFrequencyMS: 10000,
localThresholdMS: 15,
setName: null,
maxElectionId: null,
maxSetVersion: null,
commonWireVersion: 0,
logicalSessionTimeoutMinutes: null
},
code: undefined
}

以下是我的文件:Dockerfile:

FROM node:19.4.0
WORKDIR /cloudband
COPY package.json /cloudband/
COPY package-lock.json /cloudband/
RUN npm ci 
COPY .env /cloudband/
COPY server /cloudband/server/
EXPOSE 3000 
CMD ["npm", "run", "dev:server"]

YAML文件:

version: '3'
services:
mongo:
image: mongo
container_name: mongo
ports:
- 27017:27017
environment:
- MONGO_INITDB_ROOT_USERNAME=admin
- MONGO_INITDB_ROOT_PASSWORD=password
cloudband:
image: cloudband
container_name: cloudband
ports:
- 3000:3000
command: npm run dev:server
networks:
app:

我希望我的应用程序和mongodb开始在各自的容器中运行，并使它们能够通信(即创建文档/查找文档/等)。

我已经尝试过的:-确保他们在同一个网络中(他们是)-确保他们可以互相联系(他们可以)-添加链接到我的应用程序在yaml文件-检查配置，我认为他们是ok的(端口，主机，ip)-将我的uri切换为以下内容:

# MONGO_URI_=mongodb://admin:password@localhost:27017/dbname
MONGO_URI_=mongodb://localhost:27017/dbname
# MONGO_URI_=mongodb://127.0.0.1:27017/dbname

注意事项:

• node v18.12.0已安装在我的计算机上

Answer 1

在容器中，localhost表示容器本身。

docker -compose创建了一个docker网络，其中容器可以使用它们的服务名或容器名作为主机名相互通信。

所以，不用

MONGO_URI_=mongodb://localhost:27017/dbname

你需要使用

MONGO_URI_=mongodb://mongo:27017/dbname