Ubuntu下MongoDB安装&使用NodeJS操作MongoDB

一、Ubuntu下安装MongoDB 原文

1, 导入公共key

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv EA312927

2, 为MongoDB创建资源列表

Ubuntu 12.04

echo "deb http://repo.mongodb.org/apt/ubuntu precise/mongodb-org/3.2 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.2.list

Ubuntu 14.04

echo "deb http://repo.mongodb.org/apt/ubuntu trusty/mongodb-org/3.2 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.2.list

Ubuntu 16.04

echo "deb http://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.2 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.2.list

3，更新本地系统

sudo apt-get update

4，安装MongoDB

sudo apt-get install -y mongodb-org

或者：sudo apt-get install mongodb-org -g --save

安装特定版本：

sudo apt-get install -y mongodb-org=3.2.10 mongodb-org-server=3.2.10 mongodb-org-shell=3.2.10 mongodb-org-mongos=3.2.10 mongodb-org-tools=3.2.10

5， 对Ubuntu 16.4,创建 systemd service

[Unit]
Description=High-performance, schema-free document-oriented database
After=network.target
Documentation=https://docs.mongodb.org/manual

[Service]
User=mongodb
Group=mongodb
ExecStart=/usr/bin/mongod --quiet --config /etc/mongod.conf

[Install]
WantedBy=multi-user.target

6, 启动，停止，重启

sudo service mongod start

sudo service mongod stop

sudo service mongod restart

二、使用NodeJS调用MongoDB 参考

1,使用insertMany向collection 'documents' 插入数据

<span style="font-size:14px;">var MongoClient = require('mongodb').MongoClient,
    assert = require('assert');
//Connection URL
var url = 'mongodb://localhost:27017/data';

//Use connect method to connect to the server
MongoClient.connect(url, function(err, db){
    assert.equal(null, err);
    console.log("Connected successfully to server");
    
    insertDocuments(db, function() {
            db.close();
    }); 
});

var insertDocuments = function(db, callback) {
    // get the documents collection
    var collection = db.collection('documents');
    //insert some documents
    collection.insertMany([
    {a:1}, {a:2}, {a:3}
    ], function (err, result) {
        assert.equal(err, null);
        assert.equal(3, result.result.n);
        assert.equal(3, result.ops.length);
        console.log("inserted 3 documents into the collection");
        callback(result);
    });
}</span>

2，使用remove()将两个collection清空

<span style="font-size:14px;">var MongoClient = require('mongodb').MongoClient,
    assert = require('assert');
//Connection URL
var url = 'mongodb://localhost:27017/data';

//Use connect method to connect to the server
MongoClient.connect(url, function(err, db){
    assert.equal(null, err);
    console.log("Connected successfully to server");
    removeDocuments(db, function() {
            db.close();
    }); 
});

var removeDocuments = function(db, callback) {
	//get the documents collection
	var collection = db.collection('app-log-pm25-led');
	//remove all documents in collection
	collection.remove({},function(err, result) {
		assert.equal(err, null);
		console.log("remove all the documents");
		callback(result);
	});
	
	//get the documents collection
	collection = db.collection('device-log-pm25');
	//remove all documents in collection
	collection.remove({},function(err, result) {
		assert.equal(err, null);
		console.log("remove all the documents");
		callback(result);
	});
}</span>

3，使用find()选取数据

<span style="font-size:14px;">var MongoClient = require('mongodb').MongoClient,
    assert = require('assert');
//Connection URL
var url = 'mongodb://localhost:27017/data';

//Use connect method to connect to the server
MongoClient.connect(url, function(err, db){
    assert.equal(null, err);
    console.log("Connected successfully to server");
    findDocuments(db, function() {
            db.close();
    }); 
});


var findDocuments = function(db, callback) {
    //get the documents collection
    var collection = db.collection('app-log-pm25-led');
    //find some documents
    collection.find({}).toArray(function(err, docs) {
        assert.equal(err, null);
        console.log("find the following records");
        console.log(docs);
        callback(docs);
    });
}</span>

4,远程连接MongoDB并使用winston-mongodb远程保存日志

需先进行如下操作：

配置mongodb.conf 参考

#bind_ip = 127.0.0.1     //注释此行
auth = true              //将此行前的注释去掉

<pre name="code" class="javascript"><span style="font-size:14px;">var winston = require('winston'); //winston logger
require('winston-mongodb').MongoDB;
var options = {
		db:'mongodb://10.167.35.105:27017/data',
		collection:'documents',
		username:'mongodb'
}
winston.add(winston.transports.MongoDB, options);

winston.info('{a:10}');</span>