无法将nodejs连接到mongodb

Question

按照以下教程，我刚刚在DigitalOcean上创建了一个mongo数据库:当我从mongo shell访问数据库时，https://www.digitalocean.com/community/tutorials/how-to-install-and-secure-mongodb-on-ubuntu-16-04一切正常，但我无法使用node.js连接到数据库

这是我的代码：

import mongoose from 'mongoose';
mongoose.connect('mongodb://user:pass@droplet_ip:27017/my_database', (err, res) => {
  if(err) {
    console.log(err);
  }
  else {
    console.log('connected');
  }
})

这就是错误：

{ MongoError: failed to connect to server [droplet_ip:27017] on first connect [MongoError: connection 0 to droplet_ip:27017 timed out]
    at Pool.<anonymous> (/node_modules/mongodb-core/lib/topologies/server.js:336:35)
    at emitOne (events.js:96:13)
    at Pool.emit (events.js:189:7)
    at Connection.<anonymous> (/node_modules/mongodb-core/lib/connection/pool.js:280:12)
    at Object.onceWrapper (events.js:291:19)
    at emitTwo (events.js:106:13)
    at Connection.emit (events.js:192:7)
    at Socket.<anonymous> (/node_modules/mongodb-core/lib/connection/connection.js:197:10)
    at Object.onceWrapper (events.js:291:19)
    at emitNone (events.js:86:13)
    at Socket.emit (events.js:186:7)
    at Socket._onTimeout (net.js:342:8)
    at ontimeout (timers.js:365:14)
    at tryOnTimeout (timers.js:237:5)
    at Timer.listOnTimeout (timers.js:207:5)
  name: 'MongoError',
  message: 'failed to connect to server [droplet_ip:27017] on first connect [MongoError: connection 0 to droplet_ip:27017 timed out]' }

我做错了什么？

Answer 1

您可能未启用 mongo port以从Remote位置访问。

首先在droplet上运行以下命令

sudo ufw启用

sudo ufw允许OpenSSH

sudo ufw允许27017

现在打开mongo配置文件并添加append your droplet ip in bindIp部分。

文件路径：

sudo nano /etc/mongod.conf

添加以下代码，使用您的服务器ip编辑droplet_ip：

 . . .
net:
  port: 27017
  bindIp: 127.0.0.1, droplet_ip
 . . .

现在通过以下命令重启mongo：

sudo systemctl restart mongod