Change the network type of an ApsaraDB RDS for MySQL instance

For more information about how to change the network type of an RDS instance that runs a different database engine, see the following topics:

• Change the network type of an ApsaraDB RDS for SQL Server instance
• Change the network type of an ApsaraDB RDS for PostgreSQL instance

Impacts

The following table describes the impacts that a change in the network type may bring if the database proxy feature is enabled for your RDS instance. For more information, see Introduction to database proxies.

Network types

• Classic network: RDS instances in the classic network are not isolated. To block unauthorized access to these instances, you must configure IP address whitelists or security groups.
• VPC: Each VPC is an isolated virtual network. VPCs provide higher security than the classic network. We recommend that you select the VPC network type.

  You can configure route tables, CIDR blocks, and gateways in a VPC. In addition, you can connect your data center to a VPC by using Express Connect circuits or VPNs. The data center and the VPC comprise a virtual data center. You can use the virtual data center to migrate your workloads to the cloud with no downtime.

View the network type

1. Access RDS Instances, select a region at the top, and then click the ID of the target RDS instance.
2. In the left-side navigation pane, click Database Connection. On the page that appears, view the network type of the RDS instance.

Change the network type from classic network to VPC

Procedure

1. Access RDS Instances, select a region at the top, and then click the ID of the target RDS instance.
2. In the left-side navigation pane, click Database Connection.
3. Click Switch to VPC.
   Note If the preceding button cannot be found, you must check whether the RDS instance meets all prerequisites that are specified in this topic.
4. In the dialog box that appears, select a VPC and a vSwitch and specify whether to retain the classic network endpoint.
   • Select a VPC. We recommend that you select the VPC where the Elastic Compute Service (ECS) instance that you want to connect resides. If the ECS instance and the RDS instance reside in different VPCs, these instances cannot communicate over an internal network unless you use Cloud Enterprise Network (CEN) or VPN Gateway to enable network communication between the VPCs of these instances. For more information, see Overview of CEN or Establish IPsec-VPN connections between two VPCs.
   • Select a vSwitch. If no vSwitches are available in the selected VPC, create a vSwitch in the zone where the RDS instance resides. For more information, see Create a vSwitch.
   • Clear or select the Reserve original classic endpoint check box. For more information, see the following table.

     Operation	Description
     Clear the Reserve original classic endpoint check box	The classic network endpoint is not retained and changes to a VPC endpoint. When you change the network type from classic network to VPC, a transient connection that lasts approximately 30 seconds occurs and ECS instances that reside in the classic network are immediately disconnected from the RDS instance.
     Select the Reserve original classic endpoint check box	The classic network endpoint is retained, and a new VPC endpoint is generated. In this case, the RDS instance runs in hybrid access mode. Classic network-housed ECS instances and VPC-housed ECS instances can connect to the RDS instance over an internal network. For more information, see Configure the hybrid access solution for an ApsaraDB RDS for MySQL instance. When you change the network type from classic network to VPC, no transient connection occurs. The connection between each classic network-housed ECS instance and the RDS instance remains available until the classic network endpoint expires. Before the classic network endpoint expires, add the VPC endpoint to your application that runs on a VPC-hosted ECS instance. This allows ApsaraDB RDS to migrate your workloads to the selected VPC with no downtime. For more information, see Configure the hybrid access solution for an ApsaraDB RDS for MySQL instance.

5. Add the private IP address of the required VPC-hosted ECS instance to an IP address whitelist of the VPC network type on the RDS instance. This way, the ECS instance can access the RDS instance over an internal network. If no IP address whitelists of the VPC network type are available, create one.
   Note You can go to the Instance Details tab of an ECS instance in the ECS console to view the private IP address of the ECS instance.
6. Add the VPC endpoint of the RDS instance to the required VPC-hosted ECS instance.
   • If you selected the Reserve original classic endpoint check box, you must add the VPC endpoint to your application that runs on the required VPC-hosted ECS instance before the classic network endpoint expires.
   • If you cleared the Reserve original classic endpoint check box, the connection between each classic network-hosted ECS instance and the RDS instance over an internal network is immediately closed after the network type is changed. You must add the VPC endpoint of the RDS instance to your application that runs on the required VPC-hosted ECS instance.

   Note If the RDS instance resides in a VPC and you want to connect a classic network-hosted ECS instance to the RDS instance over an internal network, you can use ClassicLink to establish a connection. Alternatively, you can migrate the ECS instance to the same VPC as the RDS instance. For more information, see Overview of ClassicLink.

FAQ

• How do I change the VPC of my RDS instance?
  • If your RDS instance supports changes to VPCs and vSwitches, you can directly change the VPC of the RDS instance. For more information, see Change the VPC and vSwitch for an ApsaraDB RDS for MySQL instance.
  • If your RDS instance does not support direct changes to VPCs, perform the following steps:

    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 Migrate data between ApsaraDB RDS for MySQL instances.

• Can I connect to my RDS instance from an ECS instance over the Internet?

  Yes, you can connect to your RDS instance from an ECS instance over the Internet if the IP address of the ECS instance is added to an IP address whitelist of the RDS instance, regardless of whether your application resides in a VPC or the classic network. For more information, see Use a database client or the CLI to connect to an ApsaraDB RDS for MySQL instance.

• Can I change the network type of a read-only RDS instance and retain the classic network endpoint?

  Yes, you can change the network type of a read-only RDS instance and retain the classic network endpoint.

Related operations