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Cloud Config:Primary and secondary nodes of an RDS cluster use different instance types

Last Updated:Oct 20, 2025

An RDS cluster is considered compliant if its primary and secondary nodes use the same instance type.

Risk level

The default risk level is Medium.

You can change the risk level as needed.

Detection logic

  • An RDS cluster is considered compliant if its primary and secondary nodes use the same instance type.

Rule details

Parameter

Description

Rule name

Primary and secondary nodes of an RDS cluster use different instance types

Rule identifier

rds-instance-secondary-node-type-check

Tags

RDS,Instance

Automatic remediation

Not supported

Rule trigger

Configuration change

Supported resource types

ACS::RDS::DBInstance

Input parameters

None

Remediation

To fix a non-compliant resource, see Major version lifecycle.