A Distributed Relational Database Service (DRDS) connection allows you to read data from and write data to DRDS by using DRDS Reader and Writer. You can configure sync nodes for DRDS by using the codeless user interface (UI) or code editor.

Note Workspaces in standard mode support the connection isolation feature. You can add connections for the development and production environments separately and isolate the connections to protect your data security.

Procedure

  1. Log on to the DataWorks console as a workspace administrator, find the target workspace, and then click Data Integration in the Actions column.
  2. In the left-side navigation pane, click Connection to go to the Workspace Manage > Data Source page.
  3. On the Data Source page that appears, click Add Connection in the upper-right corner.Add a connection
  4. In the Add Connection dialog box that appears, click DRDS in the Relational Database section.
  5. In the Add DRDS Connection dialog box that appears, set the parameters.

    The DRDS connection type can be set to ApsaraDB for DRDS or JDBC Connection Mode. You can select a type as required.

    • The following table describes the parameters that appear after you set Connect To to ApsaraDB for DRDS.ApsaraDB for DRDS
      Parameter Description
      Connect To The type of the connection. Here, set the value to ApsaraDB for DRDS.
      Connection Name The name of the connection. The name can contain letters, digits, and underscores (_) and must start with a letter.
      Description The description of the connection. The description cannot exceed 80 characters in length.
      Applicable Environment The environment in which the connection is used. Valid values: Development and Production.
      Note This parameter is available only when the workspace is in standard mode.
      Instance ID The ID of the DRDS instance. You can view the ID in the DRDS console.
      Tenant Account ID The ID of the Alibaba Cloud account used to purchase the DRDS instance. You can view your account ID on the Security Settings after logging on to the Alibaba Cloud console with your Alibaba Cloud account.
      Database Name The name of the database.
      Username The username for logging on to the database.
      Password The password for logging on to the database.
    • The following table describes the parameters that appear after you set Connect To to JDBC Connection Mode.Connection mode
      Parameter Description
      Connect To The type of the connection. Here, set the value to JDBC Connection Mode.
      Connection Name The name of the connection. The name can contain letters, digits, and underscores (_) and must start with a letter.
      Description The description of the connection. The description cannot exceed 80 characters in length.
      Applicable Environment The environment in which the connection is used. Valid values: Development and Production.
      Note This parameter is available only when the workspace is in standard mode.
      JDBC URL The Java Database Connectivity (JDBC) URL of the database, in the format of jdbc:mysql://ServerIP:Port/Database.
      Username The username for logging on to the database.
      Password The password for logging on to the database.
      Note You must add the IP addresses or Classless Inter-Domain Routing (CIDR) blocks that you use to access the DRDS instance to a whitelist of the instance. For more information, see Configure a whitelist.
  6. Click Test Connection.
  7. After the connectivity test is passed, click Complete.

Note on connectivity testing

  • If the data store is a user-created one deployed on Elastic Compute Service (ECS) instances that reside on a classic network, we recommend that you use a custom resource group to run sync nodes that use the connection. The default resource group does not guarantee that it can connect to the data store over the network.
  • If the data store is deployed in a Virtual Private Cloud (VPC) and you configure the connection in instance mode, the connectivity test checks whether the entered information is correct.
  • In a VPC, if you use an internal address as the JDBC URL to configure the connection, the connectivity test will fail.
  • If you use a public address as the JDBC URL to configure the connection, the connectivity test checks whether the entered information is correct.

What to do next

Now you have learned how to configure a DRDS connection. You can proceed with the next tutorial. In the next tutorial, you will learn how to configure DRDS Reader and Writer.