Solved. Q&A: MongoDB MongoNetworkError: failed to connect to server. server is remote server - node.js

Question

mongoose connect to MongoDB fails. But mongo command line can connect to MongoDB.
Code:
var mongoose = require('mongoose');
mongoose.connect('mongodb://192.168.92.131/test', {useNewUrlParser: true});
Result:
(node:6559) UnhandledPromiseRejectionWarning: MongoNetworkError: failed to connect to server [192.168.92.131:27017] on first connect [Error:
connect EHOSTDOWN 192.168.92.131:27017 - Local (192.168.92.1:60222)
at internalConnect (net.js:835:16)
at defaultTriggerAsyncIdScope (internal/async_hooks.js:301:12)
at net.js:926:9
at processTicksAndRejections
(internal/process/task_queues.js:75:11) {
name: 'MongoNetworkError', errorLabels: [Array],
[Symbol(mongoErrorContextSymbol)]: {}
My MongoDB is installed in a virtual machine running Ubuntu OS. I searched for a solution, but I failed to find a clean solution.
I found a feasible solution to share:
Troubleshooting process
Run mongo command line. Connection ok.
MongoDB does not have access control (user/password) by default. So my code is ok.
IP problem? Mongodb did not start on 192.168.92.131
Google: start mongodb using external ip
Found a solution: https://www.shellhacks.com/mongodb-allow-remote-access/
ether#ubuntu_ether:~$ sudo nano /etc/mongod.conf
No external IP address. So add ip address in mongod.conf
…....
enabled: true
# engine:
# mmapv1:
# wiredTiger:
# where to write logging data.
systemLog:
destination: file
logAppend: true
path: /var/log/mongodb/mongod.log
# network interfaces
net:
port: 27017
bindIp: 127.0.0.1, 192.168.92.131
ether#ubuntu_ether:~$ sudo service mongod restart
Run again:
var mongoose = require('mongoose');
mongoose.connect('mongodb://192.168.92.131/test', {useNewUrlParser: true});
OK!!!