Unable to connect aws documentdb from node.js using mongoose - node.js

Question

Here is my node.js code i am trying to connect aws document db using mongoose but getting
below error.
const URL = "mongodb://school:SJDJDJDJDD#dev-docdb-2022-09-02-05-55-49.cqsssmioaafcdjkaooj9.ap-south-1.docdb.amazonaws.com:27017/school?ssl=true&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false";
// Connect to MongoDB.
const connect = mongoose.connect(
URL, {
ssl: true,
sslValidate: true,
sslCA: `./rds-combined-ca-bundle.pem`,
useNewUrlParser: true,
useUnifiedTopology: true,
},
{}
);
errors i am getting
ubuntu#ip-172-31-38-108:~/school_api$ npm start
> graphql-crud#1.0.0 start
> node server.js
🚀 Server ready at http://localhost:4000/graphql
MongooseServerSelectionError: unable to get local issuer certificate
at Connection.openUri (/home/ubuntu/school_api/node_modules/mongoose/lib/connection.js:847:32)
at /home/ubuntu/school_api/node_modules/mongoose/lib/index.js:351:10
at /home/ubuntu/school_api/node_modules/mongoose/lib/helpers/promiseOrCallback.js:32:5
at new Promise (<anonymous>)
at promiseOrCallback (/home/ubuntu/school_api/node_modules/mongoose/lib/helpers/promiseOrCallback.js:31:10)
at Mongoose._promiseOrCallback (/home/ubuntu/school_api/node_modules/mongoose/lib/index.js:1149:10)
at Mongoose.connect (/home/ubuntu/school_api/node_modules/mongoose/lib/index.js:350:20)
at Object.<anonymous> (/home/ubuntu/school_api/server.js:18:26)
at Module._compile (node:internal/modules/cjs/loader:1119:14)
at Module._extensions..js (node:internal/modules/cjs/loader:1173:10)
at Module.load (node:internal/modules/cjs/loader:997:32)
at Module._load (node:internal/modules/cjs/loader:838:12)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
at node:internal/main/run_main_module:18:47 {
reason: TopologyDescription {
type: 'ReplicaSetNoPrimary',
setName: null,
maxSetVersion: null,
maxElectionId: null,
servers: Map(1) {
'dev-docdb-2022-09-02-05-55-49.cqioaafcooj9.ap-south-1.docdb.amazonaws.com:27017' => [ServerDescription]
},
stale: false,
compatible: true,
compatibilityError: null,
logicalSessionTimeoutMinutes: null,
heartbeatFrequencyMS: 10000,
localThresholdMS: 15,
commonWireVersion: null
}
}
I have my cerificate available also inside my code. please take a look.
I am able to connect to mongodb shell from the server. So there must be something wrong
in the code.

Answer 1

const URL = `mongodb://school:SJDJDJDJDD#dev-docdb-2022-09-02-05-55-49.cqsssmioaafcdjkaooj9.ap-south-1.docdb.amazonaws.com:27017/school?replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false`
const addedToUrl = `&tls=true&tlsCAFile=rds-combined-ca-bundle.pem`;
const connect = mongoose.connect(
`${URL}${addedToUrl}`, {
useNewUrlParser: true,
useUnifiedTopology: true,
},
{}
);
You can place these parameters in the connection string.