'Error: querySrv ESERVFAIL _mongodb._tcp.cluster0.abcd0.mongodb.net

My nodejs app was working fine with mongodb connection and suddenly this error got appeared. Then I tried to connect to mongodb with mongo compass and same error is there. I could not find out any reason for this.

Error: querySrv ESERVFAIL _mongodb._tcp.cluster0.abcd0.mongodb.net
[nodemon] app crashed - waiting for file changes before starting...

Then I changed the mongodb connection url to old url and after that I got this error.

Error: 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/
[nodemon] app crashed - waiting for file changes before starting...

I have already white listed my ips and my configurations are correct (I double checked). 0.0.0.0/0 (includes your current IP address)

What is the reason for this ?

Thank you.

mongodbmongoosemongodb-atlas


Solution 1:[1]

querySrv ESERVFAIL is a DNS error.

This means that your local machine is not able to get a response from your DNS resolver for the SRV record _mongodb._tcp.cluster0.abcd0.mongodb.net (I assume that's not your real hostname, but it will work for an example)

From your local machine, test SRV lookup from a command line, possibly one of these:

nslookup -type=SRV _mongodb._tcp.cluster0.abcd0.mongodb.net
host -t SRV _mongodb._tcp.cluster0.abcd0.mongodb.net

If that fails, feel free to say bad things about your DNS provider.

Then go to the Atlas UI and get the pre-3.6 connection string. It will start with mongodb:// and not mongodb+srv://.

Solution 2:[2]

Stop the server and run again your server and it will solve the problem.

Solution 3:[3]

Joe's identification of the problem is spot on and help me with a resolution. This was fixed for me after adding Google's DNS server (8.8.8.8) to the Wifi settings of my computer.

On MacOS its in Settings > Network > Wi-Fi (select the appropriate network) > Advanced > DNS Then add the DNS Server 8.8.8.8

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1
Solution 2 Denis Ouma
Solution 3 user3434785

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