How do i connect to existing mongodb?

I have mongodb server on my system. For testing purpose i created different database using different port. E.g.

• dbname1 - SomepathIndrive -- Port
• dbname2 - SomepathIndrive -- Port
• dbname3 - SomepathIndrive -- Port

Now how do connect/start dbname2 or dbname 3 ?

When I use mongo command , it connects to default port and default database

asked Sep 21, 2017 at 6:52

3

As you said

mongo

command will connect to the server on the default port, if you want to connect to the server on different port use

mongo --port portnumber

When you are connected to mongo shell, command

show dbs

will result in list of all available databasses and to start using one of these use command

use databasename

Here's the link to the mongodb documentation about mongo Shell: https://docs.mongodb.com/manual/mongo/

answered Sep 21, 2017 at 8:37

Docs Home → MongoDB Manual

db = connect("localhost:27017/myDatabase")

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• Create or Import a MongoDB Deployment >
• Connect to a MongoDB Process

Overview¶

To connect to a MongoDB, retrieve the hostname and port information from Cloud Manager and then use a MongoDB client, such as mongosh or a MongoDB driver, to connect. To connect to a cluster, retrieve the hostname and port for the mongos process. To connect to a replica set or standalone process, retrieve the hostname and port for the mongod processes.

Firewall Rules¶

Firewall rules and user authentication affect your access to MongoDB. You must have access to the server and port of the MongoDB process. For information on firewalls on servers running MongoDB, see the firewall information in the Network Security document in the MongoDB manual.

If your MongoDB instance runs on Amazon Web Services (AWS), then the security group associated with the AWS servers also affects access. AWS security groups control inbound and outbound traffic to their associated servers.

Procedures¶

You can retrieve a shell command for connecting to your MongoDB instance, or you can retrieve the host and port number of a specific MongoDB process and create your own command for connecting using either shell or MongoDB driver.

Get a Shell Command to Connect to a MongoDB Instance¶

Navigate to the Clusters view for your deployment.¶

1. If it is not already displayed, select the organization that contains your desired project from the office icon Organizations menu in the navigation bar.
2. If it is not already displayed, select your desired project from the Projects menu in the navigation bar.
3. If it is not already displayed, click Deployment in the sidebar.
4. Click the Clusters view.

On the line listing the cluster, replica set, or process, click the ellipsis icon and select Connect to this instance.¶

Cloud Manager provides a mongo command that you can use to connect to the MongoDB process.

Get the Host and Port for a MongoDB Process¶

Navigate to the Clusters view for your deployment.¶

1. If it is not already displayed, select the organization that contains your desired project from the office icon Organizations menu in the navigation bar.
2. If it is not already displayed, select your desired project from the Projects menu in the navigation bar.
3. If it is not already displayed, click Deployment in the sidebar.
4. Click the Clusters view.

(Optional) For sharded clusters, filter which process type is listed.¶

The four buttons are listed in the following order, left to right: Shards, Configs, Mongos, and BIs.

On the line listing the process, click Metrics.¶

Cloud Manager displays the hostname and port of the process at the top of the charts page.

Connect to a Deployment Using mongosh¶

Get the host and port using the previous procedure. From a shell, run mongosh and specify the host and port. For example:

mongosh --username  --password  --host  --port 

Connect to a Deployment Using a MongoDB Driver¶

Get the host and port using the above procedure. See your driver’s instructions for creating a connection string that specifies the hostname and port.

For sharded clusters, you specify the hostname and port of the mongos instance. For a replica set, you specify a seed list of all hosts in the replica set. Your driver will automatically connect to the primary. For example:

mongodb://[:@]hostname0<:port>[,hostname1:][,hostname2:][...][,hostnameN:]

How does MongoDB connect to existing database?

How do I access local MongoDB?

How do I access MongoDB from another computer?

How do I connect to a MongoDB cluster?