ApsaraDB for MongoDB:Connect to a replica set instance by using DMS

Preparations

You have added the IP address of your DMS server to a whitelist of the instance based on the instance network type.

Procedure

1. Log on to the ApsaraDB for MongoDB console .

2. In the left-side navigation pane, click Replica Set Instances.

3. In the upper-left corner of the page, select the resource group and region to which the desired instance belongs.

4. Click the ID of the instance that you want to manage or click Manage in the Actions column.

5. In the upper-right corner of the page that appears, click Log On and select Primary, Secondary, or Readonly. Then, you are redirected to the DMS page.

   Note

   • Primary: the primary node in the replica set instance. If you connect to this node, you can perform both read and write operations on the databases of the replica set instance.

   • Secondary: secondary nodes in the replica set instance. If you connect to a secondary node, you can perform only read operations on the databases of the replica set instance.

   • Readonly: read-only nodes in the replica set instance. If you connect to a read-only node, you can perform only read operations on the databases of the replica set instance.

6. In the Log on to Database Instance dialog box, configure the parameters described in the following table.

   Parameter	Description
   Database Type	The engine of the database. By default, the engine of the database to be connected is selected.
   Instance Region	The region in which the instance is deployed. By default, the region of the current instance is selected.
   Connection String Address	The endpoint of the instance. By default, the endpoint of the current instance is displayed.
   Database Name	The name of the authentication database in which the database account is created. Note If Database Account is set to root, the database name is admin. We recommend that you do not log on to a database as the root user in the production environment. You can create a user and grant permissions based on your requirements. For more information, see Manage user permissions on MongoDB databases.
   Security hosting	The instance for which you enable security hosting enters the logon-free state. For more information about how to enable security hosting, see Security hosting.
   Database Account	The account that is used to access the database. The initial account is root.
   Database Password	The password of the database account. Note If you forget the password of the root account, you can reset the password.
   Control Mode	The mode that you use to manage the instance. Select a control mode based on your business requirements.

7. Click Login.

   Note

   If you want the browser to save the password, select Remember password and then click Login.

Common connection scenarios

• Connect to an instance over the Internet from a local client

• Connect an ECS instance to an ApsaraDB for MongoDB instance that uses a different network type over the internal network

• Connect an ECS instance to an ApsaraDB for MongoDB instance in a different region over the internal network

• Connect an ECS instance to an ApsaraDB for MongoDB instance within a different Alibaba Cloud account over the internal network

FAQ

• How do I troubleshoot failed connection issues?

• How do I troubleshoot the high CPU utilization issues on my instance?

• How do I query the number of connections to my instance?

• How do I limit the number of connections from my client?

• What do I do if the number of connections to my instance reaches the upper limit?