Can't Connect to MongoDB Atlas Cluster Using Mongo Shell

Question

I set up a cluster on MongoDB Atlas and made myself the admin but I'm having trouble connecting to the Cluster from the shell. On Atlas, I clicked the connect button, clicked connect with Mongo Shell, downloaded the latest Mongo Shell, and copied the command to connect to the cluster:

mongo "mongodb://testcluster-shard-00-00-acqhf.mongodb.net:27017,testcluster-shard-00-01-acqhf.mongodb.net:27017,testcluster-shard-00-02-acqhf.mongodb.net:27017/test?replicaSet=TestCluster-shard-0" --authenticationDatabase admin --ssl --username <USERNAME> --password <PASSWORD>

When I run this command I get the stream:

MongoDB shell version v3.4.10
connecting to: mongodb://testcluster-shard-00-00-
acqhf.mongodb.net:27017,testcluster-shard-00-01-
acqhf.mongodb.net:27017,testcluster-shard-00-02-
acqhf.mongodb.net:27017/test?replicaSet=TestCluster-shard-0
2017-11-20T11:58:31.883-0500 I NETWORK  [thread1] Starting new replica set monitor for TestCluster-shard-0/testcluster-shard-00-00-
acqhf.mongodb.net:27017,testcluster-shard-00-01-
acqhf.mongodb.net:27017,testcluster-shard-00-02-acqhf.mongodb.net:27017
2017-11-20T11:58:32.119-0500 I NETWORK  [thread1] Successfully connected to testcluster-shard-00-01-acqhf.mongodb.net:27017 (1 connections now open to testcluster-shard-00-01-acqhf.mongodb.net:27017 with a 5 second timeout)
2017-11-20T11:58:32.131-0500 I NETWORK  [ReplicaSetMonitor-TaskExecutor-0] Successfully connected to testcluster-shard-00-00-acqhf.mongodb.net:27017 (1 connections now open to testcluster-shard-00-00-acqhf.mongodb.net:27017 with a 5 second timeout)
MongoDB server version: 3.4.10
2017-11-20T11:58:32.407-0500 I NETWORK  [ReplicaSetMonitor-TaskExecutor-0] Successfully connected to testcluster-shard-00-02-acqhf.mongodb.net:27017 (1 connections now open to testcluster-shard-00-02-acqhf.mongodb.net:27017 with a 5 second timeout)
2017-11-20T11:58:32.497-0500 I NETWORK  [thread1] Marking host testcluster-shard-00-01-acqhf.mongodb.net:27017 as failed :: caused by :: Location8000: can't authenticate against replica set node testcluster-shard-00-01-acqhf.mongodb.net:27017: bad auth Authentication failed.
2017-11-20T11:58:32.639-0500 I NETWORK  [thread1] Successfully connected to testcluster-shard-00-02-acqhf.mongodb.net:27017 (1 connections now open to testcluster-shard-00-02-acqhf.mongodb.net:27017 with a 0 second timeout)
2017-11-20T11:58:32.756-0500 I NETWORK  [thread1] Marking host testcluster-shard-00-02-acqhf.mongodb.net:27017 as failed :: caused by :: Location8000: can't authenticate against replica set node testcluster-shard-00-02-acqhf.mongodb.net:27017: bad auth Authentication failed.
2017-11-20T11:58:32.899-0500 I NETWORK  [thread1] Successfully connected to testcluster-shard-00-00-acqhf.mongodb.net:27017 (1 connections now open to testcluster-shard-00-00-acqhf.mongodb.net:27017 with a 0 second timeout)
2017-11-20T11:58:32.995-0500 I NETWORK  [thread1] Marking host testcluster-shard-00-00-acqhf.mongodb.net:27017 as failed :: caused by :: Location8000: can't authenticate against replica set node testcluster-shard-00-00-acqhf.mongodb.net:27017: bad auth Authentication failed.
2017-11-20T11:58:33.100-0500 I NETWORK  [thread1] Marking host testcluster-shard-00-01-acqhf.mongodb.net:27017 as failed :: caused by :: Location8000: can't authenticate against replica set node testcluster-shard-00-01-acqhf.mongodb.net:27017: bad auth Authentication failed.
2017-11-20T11:58:33.101-0500 E QUERY    [thread1] Error: can't authenticate against replica set node testcluster-shard-00-01-acqhf.mongodb.net:27017: bad auth Authentication failed. :
DB.prototype._authOrThrow@src/mongo/shell/db.js:1461:20
@(auth):6:1
@(auth):1:2
exception: login failed

I replace the and with my username and password but I still can't connect. Do I need to have mongod running in the background? If not what do I need to do to successfully connect? Thank you.

Answer 1

I had the same error, go-to network access and edit it to be accessed from any where which is IP 0.0.0.0/0 and make sure you are not using a VPN software which makes the connection slow and timeout.

Answer 2

Sometimes is worth reseting the local service. Run brew services stop mongodb-community and then brew services start mongodb-community.

Answer 3

Just remove special character from your password.

Answer 4

Same as others, did not like my pw. Worked fine from the command line, but not from Compass. Checking the troubleshooting page https://docs.atlas.mongodb.com/troubleshoot-connection/#special-characters-in-connection-string-password. I had special characters in my pw. Tried escaping them, then just went back and reset my password to something simple w/o special characters - took a minute, but then I connected easily.

Answer 5

My problem was that I had only recently set / changed the password in the Atlas UI - it takes a minute or so for them to deploy any changes, even password resets etc. I was able to login once I waited for the changes to be deployed

Answer 6

I had to create a new user with a different username and password, and when I ran the command with these new credentials I could connect.