[MongoDB] MonooseServerSelectionError : Could not connect to any servers in your MongoDB Atlas cluster

Node에서 mongoose를 이용해 MongoDB를 연동하려고 했는데 다음과 같은 에러가 발생했다.

MongooseServerSelectionError: Could not connect to any servers in your MongoDB Atlas cluster. One common reason is that you're trying to access the database from an IP that isn't whitelisted. Make sure your current IP address is on your Atlas cluster's IP whitelist: https://docs.atlas.mongodb.com/security-whitelist/
    at NativeConnection.Connection.openUri (C:\react-node\boiler-plate\node_modules\mongoose\lib\connection.js:846:32)
    at C:\react-node\boiler-plate\node_modules\mongoose\lib\index.js:351:10
    at C:\react-node\boiler-plate\node_modules\mongoose\lib\helpers\promiseOrCallback.js:32:5
    at new Promise (<anonymous>)
    at promiseOrCallback (C:\react-node\boiler-plate\node_modules\mongoose\lib\helpers\promiseOrCallback.js:31:10)
    at Mongoose._promiseOrCallback (C:\react-node\boiler-plate\node_modules\mongoose\lib\index.js:1149:10)
    at Mongoose.connect (C:\react-node\boiler-plate\node_modules\mongoose\lib\index.js:350:20)
    at Object.<anonymous> (C:\react-node\boiler-plate\index.js:7:10)
    at Module._compile (internal/modules/cjs/loader.js:1085:14)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)
    at Module.load (internal/modules/cjs/loader.js:950:32)
    at Function.Module._load (internal/modules/cjs/loader.js:790:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:76:12)   
    at internal/main/run_main_module.js:17:47 {
  reason: TopologyDescription {
    type: 'ReplicaSetNoPrimary',
    setName: null,
    maxSetVersion: null,
    maxElectionId: null,
    servers: Map(3) {
      'boilerplate-shard-00-01.x04nx.mongodb.net:27017' => [ServerDescription],
      'boilerplate-shard-00-02.x04nx.mongodb.net:27017' => [ServerDescription],
      'boilerplate-shard-00-00.x04nx.mongodb.net:27017' => [ServerDescription]
    },
    stale: false,
    compatible: true,
    compatibilityError: null,
    logicalSessionTimeoutMinutes: null,
    heartbeatFrequencyMS: 10000,
    localThresholdMS: 15,
    commonWireVersion: null
  }
}

 

대충 해석하면 리스트에 내 IP가 없기 때문에 MongoDB Atlas Cluster에 연결할 수 있는 서버가 없다는 것 같다.

 

 

 

MongoDB Cluster 홈페이지에서 Network Access 부분에 들어가서 Add IP Adress를 클릭한다.

 

ADD CURRENT IP ADRESS를 눌러 현재 IP 주소를 받아와 Confirm 한다.

 

실행해보면 아까와 달리 잘 실행된다