ApsaraDB RDS:Change the VPC and vSwitch

Prerequisites

The RDS instance uses the subscription or pay-as-you-go billing method.

Limits

• You can change the RDS instance only to a VPC that resides in the same region or within the same Alibaba Cloud account as the original VPC.

• If your RDS instance uses local disks, you can directly change the VPC and vSwitch of the RDS instance.

• If your RDS instance uses cloud disks and you want to change the VPC of the RDS instance, the minor engine version of your RDS instance must be 20201031 or later. For more information, see Update the minor engine version.

• If no vSwitches are available in the VPC in the current zone, go to the VPC console to create a vSwitch.

Impacts

• Instance switchover: When you change the VPC and vSwitch of your RDS instance, an instance switchover occurs. Make sure that your application is configured to automatically reconnect to the RDS instance.

• Change of virtual IP addresses (VIPs): When you change the VPC and vSwitch of your RDS instance, the VIPs of your RDS instance also change. We recommend that you connect your application to your RDS instance by using an endpoint instead of an IP address.

  • VIP changes affect the availability of DRDS for a short period of time. Refresh and view the connection information in the DRDS console in a timely manner.

  • VIP changes interrupt the connection between your RDS instance and DMS and the connection between your RDS instance and DTS for a short period of time. After the VPC and vSwitch of your RDS instance are changed, the connections are automatically resumed.

• If Domain Name System (DNS) caching is enabled on your database client, you can read data but cannot write data. We recommend that you clear the cache on the client at the earliest opportunity.

Procedure

1. Go to the Instances page. In the top navigation bar, select the region in which the RDS instance resides. Then, find the RDS instance and click the ID of the instance.

2. In the left-side navigation pane, click Database Connection.

3. In the Database Connection section of the page that appears, click Switch vSwitch.

4. In the dialog box that appears, select a required vSwitch and VPC and click OK.

   Note

   If no vSwitch is created in the current zone of the VPC, no vSwitch is available for selection. In this case, go to the VPC console to create a vSwitch in the current zone.

5. In the message that appears, click OK.

   Note

   If you use RDS Cluster Edition, you can also click Edit in the Instance Topology Management section of the Basic Information page. In the dialog box that appears, click Change VPC/vSwitch to change the VPC and vSwitch.

FAQ

How do I change the VPC of an RDS instance if I cannot directly change the VPC and vSwitch of the instance?

You cannot directly change the VPC of an RDS instance whose minor engine version is earlier than 20201031. If you want to change the VPC of the RDS instance, use the following methods:

• Update the minor engine version of the RDS instance. Then, perform the operations that are described in this topic. For more information, see Update the minor engine version.

• If you do not want to update the minor engine version of the RDS instance, purchase a new RDS instance that resides in the required VPC. Then, migrate the data of the original RDS instance to the new RDS instance. For more information, see Create an ApsaraDB RDS for MySQL instance and Migrate data between ApsaraDB RDS for MySQL instances.