Creating a Big Data Service Connection

Procedure

1. Sign in to the MgC console.
2. In the navigation pane on the left, choose Migrate > Big Data Verification. Select a migration project in the upper left corner of the page.
3. In the Features area, click Connection Management.
4. Click Create Connection in the upper right corner of the page.
5. Select a big data cloud service and click Next.
6. Configure the connection parameters based on the big data service you selected.
   • Parameters for creating a connection to DLI
   • Parameters for creating a connection to CloudTable (ClickHouse)
   • Parameters for creating a connection to CloudTable (HBase)

   Table 1 Parameters for creating a connection to DLI

   Parameter	Configuration
   Connection Source	Select Target.
   Connection Name	The default name is DLI-4 random characters (including letters and numbers). You can also customize a name.
   DLI Credential	Select the credential used for accessing DLI. For details about how to add credentials, see "Big Data - DLI" in Adding Resource Credentials. If the selected credential is the one you currently use to access MgC, you can select This is my MgC credential, and the projects in the region you choose will be listed.
   Region/Project	Select the region and project where the data to be verified is located.
   Queue	Enter the name of the DLI queue to be verified. The queue must be a SQL queue.

   Table 2 Parameters required for creating a connection to CloudTable (ClickHouse)

   Parameter	Configuration
   Connection Source	Select Target.
   Connection Name	The default name is CloudTable-ClickHouse4 random characters (including letters and numbers). You can also customize a name.
   CloudTable (ClickHouse) Credential	Select the credential of the CloudTable (ClickHouse) cluster. For details about how to add credentials, see "Big Data - ClickHouse" in Adding Resource Credentials. When you add the credential, select Username/Password for Authentication and enter the username and password for logging in to the ClickHouse cluster created on CloudTable.
   Database URL	Enter the URL to access the CloudTable (ClickHouse) database. You can obtain the access address from the basic information of the ClickHouse cluster.

   Table 3 Parameters required for creating a connection to CloudTable (HBase)

   Parameter	Configuration
   Connection Source	Select Target.
   Connection Name	The default name is CloudTable-HBase4 random characters (including letters and numbers). You can also customize a name.
   CloudTable (HBase) Credential	No credential is required for unsecured clusters.
   Secured Cluster	Currently, only unsecured clusters (common clusters) are supported.
   Database URL	Enter the URL to access the CloudTable (HBase) database. You can obtain the access address from thebasic information of the HBase cluster of the HBase cluster. The address displayed after ZK Link (Intranet) is one you need.

7. Click Test. MgC verifies whether the cloud service can be connected using the configuration information. If the test is successful, the cloud services can be connected.
8. After the connection test is successful, click Confirm. The cloud service connection is created.
9. On the Connection Management page, view the created connection and its basic information. In the Operation column, click Modify to modify the connection settings.