docker容器中的环回无法连接到mongo
我有基于loopback的restful api连接到mongodb。 它工作正常。 但是当我把它放入docker集装箱时，它将不能连接。
DockerFile
# Create image based on the official Node 6 image from the dockerhub FROM node:6 # Create a directory where our app will be placed RUN mkdir -p /opt/src/app # Change directory so that our commands run inside this new directory WORKDIR /opt/src/app # Copy dependency definitions COPY package.json /opt/src/app # Install dependecies RUN npm install # Get all the code needed to run the app COPY . /opt/src/app # Expose the port the app runs in EXPOSE 3000 # Serve the app CMD ["npm", "start"] .dockerignore
node_modules/
的package.json
{ "name": "my-api", "version": "1.0.0", "main": "server/server.js", "scripts": { "lint": "eslint .", "start": "node . -H 0.0.0.0", "posttest": "npm run lint && nsp check", "build:sdk": "./node_modules/.bin/lb-sdk server/server.js ../project-app/src/app/shared/sdk -l angular2 -d ng2web -i enabled" }, "dependencies": { "compression": "^1.0.3", "cors": "^2.5.2", "helmet": "^1.3.0", "lodash": "^4.17.4", "loopback": "3.1.1", "loopback-boot": "^2.23.0", "loopback-component-explorer": "^4.0.0", "loopback-connector-mongodb": "^1.18.0", "serve-favicon": "^2.0.1", "strong-error-handler": "^1.0.1" }, "devDependencies": { "@mean-expert/loopback-sdk-builder": "^2.1.0-rc.8.2", "eslint": "^2.13.1", "eslint-config-loopback": "^4.0.0", "nsp": "^2.1.0" }, "repository": { "type": "", "url": "" }, "license": "UNLICENSED", "description": "my-api" }
build成容器
$ docker build -t my-api:dev . --no-cache=true
运行
$ docker run -it --name my-api -p 3000:3000 my-api:dev
错误
npm info it worked if it ends with ok npm info using npm@3.10.10 npm info using node@v6.10.0 npm info lifecycle my-api@1.0.0~prestart: my-api@1.0.0 npm info lifecycle my-api@1.0.0~start: my-api@1.0.0 > my-api@1.0.0 start /opt/src/app > node . -H 0.0.0.0 Web server listening at: http://127.0.0.1:3000 Browse your REST API at http://127.0.0.1:3000/explorer Connection fails: MongoError: failed to connect to server [localhost:27017] on first connect It will be retried for the next request. /opt/src/app/node_modules/mongodb/lib/mongo_client.js:336 throw err ^ MongoError: failed to connect to server [localhost:27017] on first connect at Pool.<anonymous> (/opt/src/app/node_modules/mongodb-core/lib/topologies/server.js:326:35) at emitOne (events.js:96:13) at Pool.emit (events.js:188:7) at Connection.<anonymous> (/opt/src/app/node_modules/mongodb-core/lib/connection/pool.js:270:12) at Connection.g (events.js:291:16) at emitTwo (events.js:106:13) at Connection.emit (events.js:191:7) at Socket.<anonymous> (/opt/src/app/node_modules/mongodb-core/lib/connection/connection.js:175:49) at Socket.g (events.js:291:16) at emitOne (events.js:96:13) at Socket.emit (events.js:188:7) at emitErrorNT (net.js:1278:8) at _combinedTickCallback (internal/process/next_tick.js:74:11) at process._tickCallback (internal/process/next_tick.js:98:9)
我错过了什么，如何解决？
在Dockernetworking中检查你的ip是什么（并确保MongoDB正在监听这个ip） ifconfig应该给你这样的：
docker0：flags = 4099 mtu 1500 inet 172.17.0.1 netmask 255.255.0.0 broadcast 0.0.0.0
我粗体的IP你应该在你的节点应用程序中使用。