Introduction
This article describes how to create an RDS secondary database on an ECS instance.
Background
You cannot build Secondary databases on ECS instances for the following reasons:
- Apsaradb for RDS uses the primary-secondary HA architecture, so you do not open configuration information and permissions of database files to clients.
- When an exception occurs on the primary database, the secondary database switches to the primary database within 30 seconds, which causes the serverid to change.
Application scope
- ApsaraDB RDS for MySQL