This topic describes how to migrate an instance in an ApsaraDB for MyBase dedicated cluster from a host to another host. ApsaraDB for MyBase allows you to migrate a primary or secondary instance to another host in the current zone or in a different zone.


A MyBase for MySQL instance or a MyBase for PostgreSQL instance is created. For more information, see the following topics:


  • If you migrate an instance, a transient connection of about 30 seconds occurs.
  • When you migrate an instance to a host in a different zone, the following risks may arise:
    • The virtual IP address (VIP) of the instance changes. We recommend that you use an endpoint rather than an IP address to connect your application to the instance.
    • If you do not clear the cache on your client at the earliest opportunity, data write requests may fail.
    • If a Data Transmission Service (DTS) task is running on the instance, you must restart the DTS task after you migrate the instance.


  1. Log on to the ApsaraDB for MyBase console.
  2. In the top navigation bar, select the region where you want to create a dedicated cluster.
    Select a region
  3. In the left-side navigation pane, click Clusters. On the page that appears, find the dedicated cluster that you want to manage, and click Details in the Actions column.
  4. In the left-side navigation tree, click Instances.
  5. Find the instance that you want to migrate, and click Migrate in the Actions column.
    Migrate an instance
  6. In the panel that appears, configure the following parameters.
    Migrate an instance
    Parameter Description
    Destination Zone Select a zone to which you want to migrate the instance.
    Note In the drop-down list, you can select one of the zones in which all hosts in a dedicated cluster are deployed. The instance that you want to migrate belongs to the dedicated cluster.
    VSwitch Select a vSwitch from the drop-down list. If no options are available in the drop-down list, you can click Create VSwitch to create a vSwitch in the destination zone.
    Note This parameter is required only if you migrate a primary instance to a host in a different zone.
    Destination Host Select a host to which you want to migrate the instance.
    Note This parameter is optional. If you do not specify a destination host, the instance is migrated to a host in the specified zone.
    Migration Time
    • Immediate
    • Maintenance Window 02:00-06:00
    • Specified Time: You can specify a date and time to migrate the instance.
    Note You can migrate a primary instance or a secondary instance based on business requirements. If you need to migrate only a primary instance, you must configure the parameters that are required to migrate the primary instance.
  7. Click OK.