Help Center/ Relational Database Service_RDS for PostgreSQL/ Best Practices/ Creating a Cross-Region DR Relationship for an RDS for PostgreSQL Instance/ Preparing an RDS for PostgreSQL Instance in the Production Center
Updated on 2026-08-07 GMT+08:00
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Preparing an RDS for PostgreSQL Instance in the Production Center

This section describes how to create a VPC, a security group, and an RDS for PostgreSQL instance in the production center.

Step 1: Create a VPC and Security Group

  1. Go to the Create VPC page.
  2. Select CN-Hong Kong for Region. Configure the basic information, subnet, and IP address.

    Configure the VPC and security group by referring to Resource Planning.

    Figure 1 Creating a VPC

  3. Click Create Now.
  4. In the navigation pane of Network Console, choose Access Control > Security Groups.
  5. Click Create Security Group.

    Figure 2 Creating a security group

  6. Click Create Now.

Step 2: Create an RDS for PostgreSQL Instance

  1. Go to the Buy DB Instance page.
  2. Select CN-Hong Kong for Region. Configure the instance information and click Buy.

    Configure the instance by referring to Resource Planning. For details, see Buying an RDS for PostgreSQL Instance.

    Figure 3 Selecting a DB engine version
    Figure 4 Specifying specifications
    Figure 5 Configuring network information as planned
    Figure 6 Setting an administrator password

  3. Confirm the settings.

    • To modify your settings, click Previous.
    • If you do not need to modify your settings, click Submit.

Resource Planning

Table 1 Resource planning

Category

Subcategory

Planned Value

Description

Production center VPC

VPC name

vpc-pg-01

Specify a name that will be easy to identify.

Region

CN-Hong Kong

To reduce network latency, select the region nearest to you.

AZ

az1

-

Subnet

192.168.10.0/24

Select a subnet with sufficient network resources.

Subnet name

subnet-2aa1

Specify a name that will be easy to identify.

DR center VPC

VPC name

vpc-pg-02

Specify a name that will be easy to identify.

Region

AP-Singapore

To reduce network latency, select the region nearest to you.

AZ

az1

-

Subnet

192.168.20.0/24

Select a subnet with sufficient network resources.

Subnet name

subnet-a388

Specify a name that will be easy to identify.

RDS for PostgreSQL instance in the production center

DB instance name/ID

rds-pg-01

04**in03

Specify a name that will be easy to identify.

Region

CN-Hong Kong

To reduce network latency, select the region nearest to you.

DB engine version

PostgreSQL 12

-

Floating IP address

192.168.10.117

-

DB instance type

Primary/Standby

Select Primary/Standby for the production instance.

Storage type

Cloud SSD

-

AZ

az1, az3

-

Instance class

Dedicated 2 vCPUs | 4 GB

-

Storage space

40 GB

-

RDS for PostgreSQL instance in the DR center

DB instance name/ID

rds-pg-02

5f**in03

Specify a name that will be easy to identify.

Region

AP-Singapore

To reduce network latency, select the region nearest to you.

DB engine version

PostgreSQL 12

-

Floating IP address

192.168.20.69

-

DB instance type

Single-node

Select Single for the DR instance.

Storage type

Cloud SSD

-

AZ

az1

-

Instance class

Dedicated, 8 vCPUs | 16 GB

The CPU and memory specifications of the DR instance must be greater than or equal to those of the primary instance.

Storage space

100 GB

The storage space of the DR instance must be greater than or equal to that of the primary instance.
Parent Topic: Creating a Cross-Region DR Relationship for an RDS for PostgreSQL Instance