This document describes how to configure and manage instance networks in the TencentDB for PostgreSQL console. You can add, delete, and modify instance networks based on your business needs.
Overview
Tencent Cloud supports classic network and VPC, which are capable of offering a diversity of smooth services. On this basis, we provide more flexible services as shown below to help you configure and manage network connectivity with ease.
Changing network
Switch from classic network to VPC: a single TencentDB source instance can be switched from classic network to VPC.
Switch from VPC A to VPC B: a single primary or read-only TencentDB instance can be switched from VPC A to VPC B.
Customizing access IP address
Custom primary instance IP: you can specify the IP address when adding a network on the instance details page of the primary instance.
Custom read-only instance IP: you can specify the IP address when adding a network on the instance details page of a read-only instance.
Notes
The change from classic network to VPC is irreversible. After the switch to a VPC, the TencentDB instance cannot communicate with Tencent Cloud services in another VPC or classic network.
After you change a primary instance's network, the networks of read-only instances associated with the primary instance won't be automatically switched; that is, you need to separately switch them.
A new network added to an instance does not affect the IP address in the original network configuration.
Directions
Adding network
1. Log in to the TencentDB for PostgreSQL console. In the instance list, click an instance ID or Manage in the Operation column to enter the instance management page.
2. On the instance details page, click Add Network in Basic Info > Network.
3. In the pop-up window, select a network. You can let the system automatically set an IP or manually specify an IP. After confirming that everything is correct, click OK.
Note:
You can configure one or two networks for each instance.
If an instance has two networks, both are controlled by the security group associated with the instance.
You can only select a new VPC and subnet in the same region where the instance resides.
4. After the instance status changes from Changing network to Running, you can query the changed instance network on the instance details page.
Deleting network
1. Log in to the TencentDB for PostgreSQL console. In the instance list, click an instance ID or Manage in the Operation column to enter the instance management page.
2. On the instance details page, click Delete Network in Basic Info > Network.
3. In the pop-up window, select the network to be deleted and click OK.
Note:
You can configure one or two networks for each instance.
You must confirm that a network is no longer required before deleting it, as you will not be able to access an instance over a deleted network.
4. After the instance status changes from Changing network to Running, you can query the changed instance network on the instance details page.
Modifying network
If you want to change the current network of the instance, for example, from the classic network to a VPC or from VPC A to VPC B, you can add and delete a network as detailed above for this need.
Example 1: changing from classic network to VPC
1. Log in to the TencentDB for PostgreSQL console. In the instance list, click an instance ID or Manage in the Operation column to enter the instance management page.
2. On the instance details page, click Add Network in Basic Info > Network, select the target VPC, and click OK.
3. After the instance status becomes Running, click Delete Network after the instance network, select the classic network, and click Delete. At this point, the instance network has changed from the original classic network to the new VPC.
Example 2: changing from VPC A to VPC B
1. Log in to the TencentDB for PostgreSQL console. In the instance list, click an instance ID or Manage in the Operation column to enter the instance management page.
2. On the instance details page, click Add Network in Basic Info > Network, select VPC B, and click OK.
3. After the instance status becomes Running, click Delete Network after the instance network, select VPC A, and click Delete. At this point, the instance network has changed from VPC A to VPC B.
Note:
After a network is deleted, you cannot access the instance over it. Make sure that a network is no longer needed before deleting it.
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