node.js - 如何在其他服务器上部署docker文件

Question

我正在尝试将 docker 容器部署到其他服务器。

这里是代码，里面有一些文件

服务器.js

var express    = require('express');        // call express
var app        = express();                 // define our app using express
var bodyParser = require('body-parser');
var halson = require('halson'); 
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());
var port = process.env.PORT || 8080;        
var config = require('./config');
var mongoose = require('mongoose');
mongoose.connect("mongodb://localhost/product_quantities"); 
var ProductQuantity = require('./app/models/product_quantity');
var router = express.Router(); 
router.put('/product_quantities/:product_id', function(req, res) {
if (req.body.quantity_onhand == null) {
    res.status(400);
    res.setHeader('Content-Type', 'application/vnd.error+json');
    res.json({ message: "quantity_onhand parameter is required"});
}  
else{
    ProductQuantity.findOne({ product_id: req.params.product_id}, function(err, productQuantity) {
        if (err) return console.error(err);
        var created = false; // track create vs. update
        if (productQuantity == null) {
            productQuantity = new ProductQuantity();
            productQuantity.product_id = req.params.product_id;
            created = true;
        }
        // set/update the onhand quantity and save
        productQuantity.quantity_onhand = req.body.quantity_onhand;
        productQuantity.save(function(err) {
            if (err) {
                res.status(500);
                res.setHeader('Content-Type', 'application/vnd.error+json');
                res.json({ message: "Failed to save productQuantity"});
            } else {
                // return the appropriate response code, based
                // on whether we created or updated a ProductQuantity
                if (created) {
                res.status(201);
                } else {
                res.status(200);
                }

                res.setHeader('Content-Type', 'application/hal+json');

                var resource = halson({
                    product_id: productQuantity.product_id,
                    quantity_onhand: productQuantity.quantity_onhand,
                    created_at: productQuantity.created_at
                }).addLink('self', '/product_quantities/'+productQuantity.product_id)

                res.send(JSON.stringify(resource));
              }

          });
      });
   }    
 });
// Register our route
 app.use('/', router);

// Start the server
app.listen(port);
console.log('Running on port ' + port);

包.json

{
  "name": "project",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
      "test": "echo \"Error: no test specified\" && exit 1"
   },
  "author": "",
  "license": "ISC",
  "dependencies": {
      "body-parser": "^1.17.1",
      "express": "^4.15.2",
      "halson": "^2.3.1",
      "mongoose": "^4.9.3"
  }

配置.js

 module.exports = {
    db: {
     production:     "mongodb://"+process.env.MONGODB_ADDRESS+":27017/product_quantities",
  development:   "mongodb://"+process.env.MONGODB_ADDRESS+":27017/product_quantities",
 }
};

docker 文件

 FROM node:latest

RUN mkdir -p /usr/src/app  
WORKDIR /usr/src/app  
COPY . /usr/src/app

EXPOSE 8080   
RUN npm install  
CMD ["npm", "start"]  

service.yml文件

 services:

   inventory:
    git_url: git@github.com:launchany/microservices-node-inventory.git
    git_branch: master
    command: npm start
    build_root: .
  ports:
    - container: 8080
     http: 80
     https: 443
  env_vars:
    NODE_ENV: production

 databases:
   - mongodb

我已经通过 docker 命令在本地实现了 docker 镜像，并且还推送到了 docker hub 上。

现在在其他服务器上，当我们通过 docker pull 命令从 docker hub 中拉取容器时，它已成功运行，但是当我们运行 docker 命令时，它就会运行

返回错误是:

MongoError: failed to connect to server [localhost:27017] on first connect [MongoError: connect ECONNREFUSED 127.0.0.1:27017]

Answer 1

您似乎没有运行 mongoDB。您有本地 Mongo 安装还是也已容器化？

如果是，请确保 Mongo 实例也在您的服务器上运行。