MongooseServerSelectionError：连接 ECONNREFUSED::1:27017 不会得到修复

Question

I've been trying for over 2 hours now trying to figure out what's wrong with this database. I've tried everything. From reinstalling the server, restarting the processes, rebooting and so much more. It keeps giving me this error when trying to connect:

const serverSelectionError = new ServerSelectionError();
                               ^

MongooseServerSelectionError: connect ECONNREFUSED ::1:27017
    at NativeConnection.Connection.openUri (D:\TheShed\MX_\node_modules\mongoose\lib\connection.js:797:32)
    at D:\TheShed\MX_\node_modules\mongoose\lib\index.js:330:10
    at D:\TheShed\MX_\node_modules\mongoose\lib\helpers\promiseOrCallback.js:32:5
    at new Promise (<anonymous>)
    at promiseOrCallback (D:\TheShed\MX_\node_modules\mongoose\lib\helpers\promiseOrCallback.js:31:10)
    at Mongoose._promiseOrCallback (D:\TheShed\MX_\node_modules\mongoose\lib\index.js:1151:10)
    at Mongoose.connect (D:\TheShed\MX_\node_modules\mongoose\lib\index.js:329:20)
    at module.exports (D:\TheShed\MX_\other\DB\mong.js:4:20)
    at D:\TheShed\MX_\app.js:195:37
    at Object.<anonymous> (D:\TheShed\MX_\app.js:197:3) {
  reason: TopologyDescription {
    type: 'Unknown',
    servers: Map(1) {
      'localhost:27017' => ServerDescription {
        _hostAddress: HostAddress { isIPv6: false, host: 'localhost', port: 27017 },
        address: 'localhost:27017',
        type: 'Unknown',
        hosts: [],
        passives: [],
        arbiters: [],
        tags: {},
        minWireVersion: 0,
        maxWireVersion: 0,
        roundTripTime: -1,
        lastUpdateTime: 1421094,
        lastWriteDate: 0,
        error: MongoNetworkError: connect ECONNREFUSED ::1:27017
            at connectionFailureError (D:\TheShed\MX_\node_modules\mongodb\lib\cmap\connect.js:293:20)
            at Socket.<anonymous> (D:\TheShed\MX_\node_modules\mongodb\lib\cmap\connect.js:267:22)
            at Object.onceWrapper (node:events:510:26)
            at Socket.emit (node:events:390:28)
            at emitErrorNT (node:internal/streams/destroy:164:8)
            at emitErrorCloseNT (node:internal/streams/destroy:129:3)
            at processTicksAndRejections (node:internal/process/task_queues:83:21)
      }
    },
    stale: false,
    compatible: true,
    heartbeatFrequencyMS: 10000,
    localThresholdMS: 15,
    logicalSessionTimeoutMinutes: undefined
  }
}

This error wont resolve no matter what I do. The MongoDB server is running, I've checked by doing >show dbs and it lists them perfectly fine. Also, C:/data/db exists and its fine too. What do I do? Here's my connection code:

(async () => {
    await require('./other/DB/mong')();
    console.log("Connected to Database.");
})();

and here's./other/DB/mong:

var mongoose = require("mongoose");

module.exports = async () => {
    await mongoose.connect('mongodb://localhost:27017/MX', {
        keepAlive: true,
        useNewUrlParser: true,
        useUnifiedTopology: true
    });
    return mongoose;
}

Answer 1

MongoDB does not bind to localhost on ipv6 by default.

If you want it to listen on ::1 you will need to enable net.ipv6 and either enable net.bindIpAll or explicitly list the loopback address in net.bindIp

Answer 2

I just found a solution in the internet , If you are using latest nodejs (v17.x) , then try updating mongodb url from localhost to 127.0.0.1

This worked for me :slightly_smiling_face:

Answer 3

将我的 mongodb url 从 'mongodb://localhost:27017/student' 更新为 'mongodb://127.0.0.1:27017/student' 对我来说效果很好

Answer 4

你也可以使用 mongodb://0.0.0.0:27017/database_name

Answer 5

update from

'mongodb://localhost:27017/myapp' to 'mongodb://127.0.0.1:27017:27017/myapp'

then check to be sure it connects.

mongoose.connect(process.env.DATABASE, { useNewUrlParser: true, useUnifiedTopology: true }).then(() => console.log('DB Connected'));

Answer 6

const options = {

useNewUrlParser: true,
useUnifiedTopology: true,
serverSelectionTimeoutMS: 5000,
autoIndex: false, // Don't build indexes
maxPoolSize: 10, // Maintain up to 10 socket connections
serverSelectionTimeoutMS: 5000, // Keep trying to send operations for 5 seconds
socketTimeoutMS: 45000, // Close sockets after 45 seconds of inactivity
family: 4 // Use IPv4, skip trying IPv6

}

Answer 7

use mongoose.connect("mongodb://127.0.0.1:27017/databasename"); instead of localhost

Answer 8

step 1. check MongoDB service is running -> if OK.

try next: step 2. replace 127.0.0.1 from localhost -> this should work 100%

Answer 9

just change this, mongoose.connect('mongodb://localhost:27017/Database-name'); ---> mongoose.connect("mongodb://127.0.0.1:27017/Database-name");

Answer 10

If you are using latest nodejs. If connecting fails on your machine, try using 127.0.0.1 instead of localhost like mongoose.connect('mongodb://127.0.0.1:27017/myapp');