If a secondary instance on a host becomes faulty, you can create a secondary instance on the host. If you want to migrate a secondary instance across hosts in the same ApsaraDB for MyBase dedicated cluster, you can create a secondary instance on the destination host. This topic describes how to create a secondary instance.

Background information

For more information about ApsaraDB for MyBase, see What is ApsaraDB for MyBase?.

Procedure

  1. Log on to the ApsaraDB for MyBase console.
  2. In the upper-left corner of the page, select the region where you want to create the dedicated cluster.
    Select a region
  3. Find the dedicated cluster where the instance resides, and click Details in the Actions column.
  4. In the left-side navigation pane, click Instances.
  5. Find the primary instance for which you want to create a secondary instance, and click Create New Secondary Instance in the Actions column.
    Create a secondary instance
  6. In the dialog box that appears, select Specified Host, specify the host on which you want to create a secondary instance, and click OK.
    Note If you do not select Specified Host, the system creates a secondary instance on the host where the existing secondary instance resides. If the host where the existing secondary instance resides cannot provide sufficient storage capacity, the system selects a host where the primary instance does not reside. If no host can provide sufficient storage capacity, a message appears asking you to create a host.