docker & nodejs & mongodb

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 modejsdemo

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

浏览器访问 192.168.99.100:3000