Error when trying to connect to db.
Problem
Prerequisites - [x] I have written a descriptive issue title Mongoose version 6.6.0 Node.js version 18.x MongoDB version 5.0.12 Operating system Windows Operating system version (i.e. 20.04, 11.3, 10) 10 Issue So when I try to connect to my db I have an error [code block] link that I use to connect is [code block] And yes, I have a correct username and password. My IP is allowed too.
Error Output
Error: querySrv ECONNREFUSED _mongodb._tcp.cluster0.0ltupff.mongodb.net
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1 Fix
Fix ECONNREFUSED Error When Connecting to MongoDB
The ECONNREFUSED error indicates that the connection attempt to the MongoDB server was refused. This can happen due to several reasons such as incorrect connection string format, network issues, or firewall settings blocking the connection. In this case, the error suggests that the DNS resolution for the MongoDB SRV record failed, which could be due to network configuration or incorrect connection string.
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- 1
Verify Connection String Format
Ensure that your MongoDB connection string is correctly formatted. For SRV connections, it should start with 'mongodb+srv://'. Example: 'mongodb+srv://<username>:<password>@cluster0.0ltupff.mongodb.net/test'.
javascriptconst mongoose = require('mongoose'); const uri = 'mongodb+srv://<username>:<password>@cluster0.0ltupff.mongodb.net/test'; mongoose.connect(uri, { useNewUrlParser: true, useUnifiedTopology: true }); - 2
Check Network Connectivity
Ensure that your machine can reach the MongoDB server. You can test this by using the ping command to check connectivity to the MongoDB server's address.
bashping cluster0.0ltupff.mongodb.net - 3
Check Firewall Settings
Make sure that your firewall settings allow outbound connections on the ports used by MongoDB (default is 27017). You may need to add an exception for your application or the MongoDB service.
bashnetsh advfirewall firewall add rule name="MongoDB" dir=OUT action=ALLOW protocol=TCP localport=27017 - 4
Use Direct Connection (if SRV fails)
If the SRV connection continues to fail, try connecting directly using the standard connection string format without SRV. Example: 'mongodb://<username>:<password>@<host>:<port>/<database>'.
javascriptconst uri = 'mongodb://<username>:<password>@localhost:27017/test'; mongoose.connect(uri, { useNewUrlParser: true, useUnifiedTopology: true }); - 5
Check MongoDB Atlas IP Whitelist
Ensure that your current IP address is whitelisted in the MongoDB Atlas dashboard under Network Access. If your IP changes frequently, consider using '0.0.0.0/0' for testing purposes (not recommended for production).
Validation
After applying the above steps, try to connect to the database again. If successful, you should not see the ECONNREFUSED error and should be able to perform database operations.
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Environment
Submitted by
Alex Chen
2450 rep