Help Center/ Distributed Database Middleware/ Getting Started/ Buying a DDM Instance and Connecting to a Schema Using DAS
Updated on 2024-08-05 GMT+08:00
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Buying a DDM Instance and Connecting to a Schema Using DAS

Data Admin Service (DAS) is a one-stop management platform that allows you to manage Huawei Cloud databases on a web console. It offers database development, O&M, and intelligent diagnosis, making it easy to use and maintain databases.

This section describes how to buy DDM instances and RDS for MySQL instances, create a DDM account and associate it with RDS for MySQL instances, and connect to a DDM schema using DAS.

Step 1: Buy a DDM Instance

  1. Go to the Buy DDM Instance page.
  2. On the displayed page, configure the required parameters and click Next.
  3. Perform subsequent operations based on the billing mode you select:

    • If you select Pay-per-use, click Submit.
    • If you select Yearly/Monthly, click Pay Now.

  4. View the purchased instance.

    Figure 1 Instance successfully purchased

Step 2: Buy an RDS for MySQL DB Instance

  1. Go to the Buy DB Instance page.
  2. Configure the instance information and click Next.

    • A DDM instance can be associated with RDS for MySQL instances of versions 5.7 and 8.0.
    • The RDS for MySQL instance must be in the same VPC and subnet as your DDM instance. If they are not in the same subnet, configure routes to ensure network connectivity.
    • Specifications of associated RDS for MySQL instances should be greater than that of the DDM instance. Otherwise the performance will be affected.
    Figure 2 Network configurations

  3. Confirm the configurations and click Submit. Wait 1 to 3 minutes for the RDS instance to be created.
  4. View the purchased RDS instance.

Step 3: Create a DDM Account and Associate It with an RDS for MySQL Instance

  1. Log in to the DDM console.
  2. In the instance list, locate the required DDM instance and click its name.
  3. In the navigation pane, choose Accounts.
  4. On the displayed page, click Create Account.
  5. In the dialog box that is displayed, configure the account information and click OK.

    The value of the password validity period must be an integer ranging from 0 to 65535, in days. If the value is 0, the password never expires. If this parameter is not set, the password will always be valid.

  6. On the Instances page, locate the required DDM instance and click Create Schema in the Operation column.
  7. On the Create Schema page, set required parameters and click Next.
  8. On the displayed page, enter a database account with the required permissions and click Test Availability.

    Figure 3 Testing availability of data nodes

  9. After the test is successful, click Finish.
  10. View the associated RDS for MySQL instance.

    Figure 4 DB instance successfully associated

Step 4: Use DAS to Connect to a DDM Schema

  1. Log in to the DDM console.
  2. On the Instances page, locate the destination instance, and click Log In in the Operation column.

    The instance login page of the DAS console is displayed.

  3. On the displayed page, enter username and password of the DDM account.
  4. Click Test Connection and select Remember Password.
  5. Ensure that all settings are correct and click Log In.