Tair (Redis® OSS-Compatible):Switch an instance to a VPC

Impacts

• After switching to VPC, you cannot switch back to the classic network.

• The instance briefly disconnects for a few seconds. Perform this operation during off-peak hours and ensure your application supports automatic reconnection.

Network types

Procedure

1. Log on to the console and go to the Instances page. In the top navigation bar, select the region in which the instance is deployed. Then, find the instance and click its ID.

2. In the Connection Information section, click Switch to VPC Network on the right.

3. In the panel, configure the following parameters.

   Parameter	Description
   VPC	Select the target VPC and vSwitch. Note If no VPCs or vSwitches are listed, none exist in the instance's region and zone. Create and manage a VPC and Create and manage a vSwitch. For example, if your instance is in China (Hangzhou) Zone E and no vSwitches appear after selecting a VPC, that VPC lacks a vSwitch in Zone E. Create one first, then retry.
   Virtual Switch:
   Retain classic network endpoint	Choose whether to keep the classic network endpoint. Retain: The instance keeps both endpoints. Clients can use either one. Migrate to the VPC endpoint before the classic network endpoint expires. Do Not Retain: The VPC endpoint reuses the classic network endpoint, so no client-side changes are needed. Clients can only connect over the VPC.
   Retention period	Number of days to keep the classic network endpoint. You can adjust this after the switch. Modify the retention period of a classic network endpoint.

4. Click OK.

FAQ

• Q: Why can't I select a vSwitch when I switch to a VPC?

  A: No VPCs or vSwitches exist in the instance's region and zone. Create and manage a VPC and Create and manage a vSwitch.

  For example, if your instance is in China (Hangzhou) Zone E and no vSwitches appear after selecting a VPC, that VPC lacks a vSwitch in Zone E. Create one first, then retry.

• Q: If an ECS instance and a Tair (Redis OSS-compatible) instance are in the same VPC but in different vSwitches (or zones), can it connect to the Tair (Redis OSS-compatible) instance over the VPC?

  A: Yes. As long as the ECS instance and the Tair (Redis OSS-compatible) instance are in the same region and the same VPC, they can connect regardless of vSwitch or zone. Add the ECS instance's internal IP to the IP address whitelist of the Tair (Redis OSS-compatible) instance.

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