Nodejs mongoose connection copy set configuration

topic description

the following is a set of built replicas, where 12 nodes are arbitration nodes
192.168.1.10 br 27017
192.168.1.11 purl 27017
192.168.1.12 purl 27017

replica set set is: sss

nodejs uses mongoose middleware to connect to mongodb
has a global admin library account root:testadmin
ask how to configure mongoose"s uri and options

sources of topics and their own ideas

try to configure mongodb://root:testadmin@192.168.1.10:27017192.168.1.11:27017/test?authSouce=admin&replicaSet=sss by yourself

will report an error soket hang up

how to correctly configure the URI of the replica set?

Mongoose mongodb node.js

Sep.27,2021

mongodb://root:testadmin@192.168.1.10:27017192.168.1.11:27017192.168.1.12:27017/test?authSouce=admin&replicaSet=sss
PS: A maximum of one arbitration occurs in a cluster, and two arbitrations are unnecessary.

Previous: Android rawquery queries have caches

Next: Mongodb's Subdocuments update question?

The problem of how mongoose, mongodb db.collection.find () syntax is introduced into query
query router.get(" cartList", (req, res, next) => { User.findOne({ userId: 123456 }, (err, doc) => { }); } query router.get(" cartList", (req, res, next) => { let userId = req.cookies.userId console.log(user...

Mongoose mongodb node.js

Mar.02,2021
How do I view all the syntax of Mongoose?
I have read the document for a long time, and I have a general understanding of the concept grammar and so on, but when I really write it, I still have a lot of problems and always get stuck. such as the following this.ctx.model.Role.remove({ _id: { ...

Mongoose mongodb node.js javascript

Mar.06,2021
How to set objectId to userId when mongoose creates a user
const UserSchema = new Schema({ userId:Schema.Types.ObjectId, username: String, mobile: String, password: String, remarks: String, createAt: {type: Date, default: Date.now}, updateAt: {type: Date, default: Date.now}, ...

Mongoose mongodb node.js

Mar.08,2021
Array type insertion values for mongoose object types
the model is designed as follows const RegistrationSheet = mongoose.model( RegistrationSheet , new Schema({ doctorId: String, today: { time: String, date: { morning: [ { number:Number, patient: ...

Mongoose mongodb node.js

Mar.09,2021
How mongoose updates a subdocument in a subdocument array
The structure is shown in the figure. Steps is an array. Now you want to modify the count value of a specified date. ...

Mongoose mongodb node.js

Mar.13,2021
How does mongoose handle a multi-tier circular query, modify the query results, and then return the final results?
problem description there is a shopping cart cartList field under the user table. The field type is as follows: cartList: [ { shopId: { type: Schema.ObjectId }, shopName: String, goodsList: [ ...

Mongoose mongodb node.js javascript

Apr.07,2021
Nodejs uses mongoose to operate the database, and the query result is empty
the specific code is as follows: node beginners, excuse me const mongoose = require( mongoose ); mongoose.connect( mongodb: ) mongoose.model( content ,{}).find({}) .then( feeds =>{ console.log(feeds); }) the printed result ...

Mongoose mongodb node.js

Nov.23,2021
Is it not recommended to use multi-table queries for mongodb non-relational databases?
question: is it not recommended to use multi-table queries for mongodb non-relational databases? ...

Koa2 mongoose mongodb node.js javascript

Nov.26,2021
Koa+mongo reports error: Error: connect ECONNREFUSED 127.0.0.1 after receiving post request
problem description after the post request is sent by the current end, the database successfully writes the data, but the backend still reports an error of Error: connect ECONNREFUSED 127.0.0.1, and returns 500. the environmental background of the p...

Mongoose mongodb node.js koa2

Feb.18,2022
There is obviously a document corresponding to ID in Mongoodb, but you can't find it.
this ID is clearly documented. Why report this error? ...

Mongoose mongodb node.js

Apr.07,2022

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-42abd40-628c.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-42abd40-628c.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?