AWS-RDS-RDS-Multiple-AZ

Owned by naveen
Last updated: Dec 02, 2021
1 min read

Severity: Medium

Description: This control ensures that the Multi AZ deployment option is enabled for High Availability of the database instance. In a Multi-AZ deployment, a synchronous standby replica is provisioned and maintained in a different Availability Zone. In case of unavailability of the primary database instance due to any reason, the replica of the same database instance is used.

Remediation Steps:

Perform following to update RDS availability zones :

  1. Login to the AWS Management Console at https://console.aws.amazon.com.

  2. Navigate to RDS console.

  3. In the navigation pane, Click on Databases.

  4. Click on the Database instance to be modified, click Modify.

  5. Under Instance Specifications, set Multi-AZ deployment as Yes.

  6. Click on the Continue.

  7. Under Scheduling of modifications, select Apply Immediately.

  8. Click on Modify DB Instance.

Important:

  • This control is not applicable for AWS GovCloud.

  • Any modifications to AWS RDS Instances can be either applied immediately or can be scheduled to apply during next maintenance window. The above remediation guides to apply changes immediately.

Reference :

Blue Hexagon Proprietary