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Changing Network

Last updated: 2024-04-12 09:39:04

This document describes how to change the instance network in the TencentDB for SQL Server console.
Network types
There are two types of TencentDB network environments: VPC and classic network.
Classic network: It is the public network resource pool for all Tencent Cloud users. All your Tencent Cloud resources will be centrally managed by Tencent Cloud.
VPC: It is a logically isolated network space that can be customized in Tencent Cloud. Even in the same region, different VPCs cannot communicate with each other by default. Similar to the traditional network in an IDC, a VPC is where your Tencent Cloud service resources are managed.
Scenario
Tencent Cloud supports VPC to offer a diversity of smooth services. On this basis, we provide the VPC change feature to help you manage network connectivity with ease.
Supported instance types
Primary instance, read-only instance, and replica node (replica node read-only address).
Note
Changing the network will change the instance IP. The original IP will become invalid after 24 hours by default. Modify the instance IP on the client promptly.
If Valid Hours of Old IP is set to 0, the IP will be released immediately after the network is changed.
Subnet description
A subnet is a logical network space in a VPC. You can create subnets in different AZs in the same VPC, which communicate with each other over the private network by default. Even if you select a subnet in another AZ in the same region, the network latency will not be increased because the actual business connection adopts nearby access.
Directions
Primary Instance/Read-Only Instance Network Modification
1. Log in to the TencentDB for SQL Server console, select the region, and click Instance ID/Name of the target instance or Manage in the Operation column.
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2. On the Instance Details page, click Change Network in Basic Info > Network.
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3. In the pop-up window, select a VPC, set Valid Hours of Old IP, select Auto-Assign IP or Specify IP, and click OK.
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Select Network: After a VPC is selected, only servers in it can access the database.
Valid Hours of Old IP: You can select 0–168 hours. If it is set to 0, the old IP will be repossessed immediately.
Auto-Assign IP: The system automatically assigns the new IP address.
Specify IP: You can customize the subnet IP address.
4. The VPC is changed successfully when the instance status becomes Running.
Replica Node Read-Only Address Network Modification
Note:
The modification of the replica node read-only address is supported only after the replica node read-only feature has been enabled. For more information on enabling the feature, see Replica Node Read-Only.
Changing the network will change the replica node read-only IP, and the original IP address will be immediately repossessed.
To change the network, you can only select the VPC network and subnet in the same region where the instance resides.
1. Log in to the SQL Server Console, select the region, and click the Instance ID / Name or Manage in the Operations column of the instance requiring network switch.
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2. In the  Instance Details  page, go to  Replica Node Read-Only > Network,then click  Modify Network.
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3. In the Change Network pop-up window, after modifying the network and read-only address, click OK.
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Select Network: After a VPC network is selected, only hosts corresponding to the VPC network can access the database.
Auto-assign IP: A new IP address will be automatically assigned by the system.
Specify IP: You can customize the subnet IP address.