Nodejs 应用简单的访问Mongodb 部署至Docker

1.本地简单的写能运行起来的一个nodejs (demo可写的更简单 一个post一个get即可)

schemas  user.js


var mongoose = require('mongoose')
 
var UserSchema = new mongoose.Schema({
    name:{
        unique:true,
        type:String
    },
    password:{
        type:String
    },
    //0  1  2  3  4
    role:{
        type:Number,
        default:5
    }
})
UserSchema.statics = {
    fetch:function(cb){
        return this.find({})
        .exec(cb)
    },
    findById:function(id,cb){
        return this.findOne({_id:id}).exec(cb)
    }
}
module.exports = UserSchema

-----
model user.js　　
-----

var mongoose = require('mongoose')
 
var UserSchema = require('../schemas/user')
 
var User = mongoose.model('User',UserSchema);
 
module.exports = User;

----
controller user.js
----

var User = require('../model/user')
 
exports.list = function(req,res){
    User.fetch(function(err,users){
        if(err) {console.log(err)}
        res.send(users);
    })
}
exports.save = function(req,res){
    console.log(req.query.name);
    var name = req.query.name || 'noname';
    var password = 'abcdefg';
    var user = new User({"name":name,"password":"123456"})
     
    user.save(function(err){
        if(err)
        {
            console.log('false');
            res.send("fails");
            return;
        }
        res.redirect('/');
    })
}
 

----
app.js
----

var express = require('express');
var router = express.Router();
var mongoose = require('mongoose')
 
//var dbURL = 'mongodb://localhost:27017/imooc';
var dbURL = 'mongodb://mongodb/imooc';//mongodb这个名字是 在--link=aaa:bbb时的名字 即bbb
mongoose.connect(dbURL);
 
var app = express();
 
app.listen(3000,function(){
    console.log("server start. Listen port:3000");
});
 
require('./router/router')(app)
　　
-----
router.js
-----

var User = require('../app/controller/user')
 
var _ = require('underscore')
 
module.exports = function(app){
    app.get('/',User.list)
    app.get('/user',User.save);
}
　　确保本地能够正常运行。

2.在app.js文件目录编写dockerfile

FROM node
 
COPY . /home/src
 
RUN cd /home/src; npm install
 
EXPOSE 3000
 
CMD ["node","/home/src/app.js"]
　

4.docker pull mongo 

5.docker run -it --name mongodb mongo  进入终端

cd /home
mkdir db
mongod --dbpath='/home/db'
启动mongodb服务
 

6.docker build -t nodejsdemo .

docker run -it -p 3000:3000 --name nodejsdemo --link=mongodb:mongodb nodejsdemo

此时控制台可以看到 server start Listen port:3000


浏览器访问 192.168.99.100:3000

-------

yaml 部署的方式

nodejsdemo:
  image: daocloud.io/yzq627/nodejsdemo:master-e0af672
  links:
  - mongodb:mongodb
  ports:
  - 32775:3000
  restart: always
mongodb:
  image: mongo
  restart: always