This topic describes how to upgrade an ApsaraDB RDS for PostgreSQL instance from RDS Basic Edition to RDS High-availability Edition to improve reliability.
Prerequisites
The RDS instance meets the following requirements:
The RDS instance runs PostgreSQL 10 or later.
Instance Family: Basic Series
NoteYou can view the series of your instance on the Basic Information page.
Background information
High-availability Edition is a widely used edition. RDS instances of this edition are deployed in a primary/secondary architecture to deliver highly available services. This edition is suitable for more than 80% of use cases in various industries, such as Internet, IoT, online retail, logistics, and gaming.
For more information, see RDS High-availability Edition.
Billing
For more information about the upgrade fees, see Specification changes.
Impacts
The upgrade can trigger a data migration, which may require a few minutes. After the migration is complete, a switchover of your workloads is triggered at the switching time that you specify. During the switchover, a transient connection that lasts approximately 30 seconds occurs. Make sure that your application is configured to automatically reconnect to your RDS instance.
After the upgrade is complete, you cannot downgrade the RDS edition of your RDS instance to RDS Basic Edition.
Procedure
Go to the Instances page. In the top navigation bar, select the region in which the RDS instance resides. Then, find the RDS instance and click the ID of the instance.
On the Basic Information page, in the Configuration Information section, click Change Specifications.
For subscription instances, select Upgrade and click Next in the dialog box that appears.
Configure the following parameters.
Parameter
Description
Edition
Select High-availability Edition.
Storage Type
Select the storage type. For more information, see Storage types.
NoteThis parameter is supported only when the original instance uses ESSD.
Instance Type
Select an instance type. Each instance type supports a specified number of cores, memory capacity, maximum number of connections, and maximum IOPS. For more information, see Primary ApsaraDB RDS instance types.
Storage Capacity
Specify the storage capacity of your RDS instance. The storage capacity can only be increased but cannot be decreased.
Switching Time
Specify the time to perform the workload switchover. Valid values:
Execute Immediately
Switch Within Maintenance Window
Read the Terms of Service, and then click Confirm Order and complete the payment.
Related operations
API | Description |
Changes the specifications of an ApsaraDB RDS instance. |