Configuring auto-scaling for Amazon DynamoDB access nodes

Configuring auto-scaling for Amazon DynamoDB includes creating a scale profile, creating a workload resource pool, and associating the scale profile's server group with the resource pool.

Multi-tenant environments

In multi-tenant environments:

Service providers can offer auto-scaling as a service.
Tenants can either use their service providers' auto-scaling service or configure their own auto-scaling.

Before you begin

Subscribe to the required Commvault AMIs on AWS Marketplace. For information about supported AMIs, see AMIs used for auto-scaled access nodes.
Auto-scaling is supported for commercial AWS Regions only. Edge locations (such as GovCloud, AWS Outposts, Local Zones, and Wavelength Zones) are not supported.
Ensure you have the necessary IAM permissions to create EC2 instances and manage resources in the target AWS account.
To enable the use of scale profile client functionality for auto-scaling access nodes, you must configure useScaleProfileClientEnabled additional setting. This setting should be set up at tenant scope.

Create a scale manager Node

You must have an access node to serve as the scale manager node. This node manages the auto-scaling operations but does not perform data protection operations itself. You can use an existing access node or create a new one.

Important

The scale manager node should be dedicated to managing auto-scaling and should not be used for other data protection operations.
For EC2 instances, the dmidecode command-line utility must be installed on the machine for it to appear in the scale manager node dropdown list.

If you need to create a new access node:

Click Add server, and then specify host name, credentials, and OS type.
Select the appropriate packages for your access node.
Select a plan, confirm the installation path, and enable Reboot if required.
Click Install, and then refresh the Servers page.

Create a scale profile for AWS

Create a scaling profile that specifies the AWS credentials, scale manager node, Availability Zones, IAM role, instance type, and maximum number of access nodes.

Multi-tenant environments

Service providers: Use your AWS account credentials where the auto-scaled access nodes will be deployed.
Tenants configuring your own auto-scaling: Use your own AWS account credentials.

For detailed steps, see Create a scaling profile for AWS.

Important

By default, AWS Graviton (c7g.xlarge) instances are used. Auto-scaled access nodes shut down after 5 minutes of idle time and are deleted after 30 minutes of inactivity.

Create a server group

Create a server group and add the scale profile to the server group.

Configure auto-scaling for specific DynamoDB instances

For new instances

When configuring a new DynamoDB instance, select the scaling profile's server group directly as the access node. For more information, see Configuring Backups for Amazon DynamoDB Instances.

For existing instances

From the Command Center navigation pane, go to Protect > Databases.
On the Instances tab, click the DynamoDB instance for which you want to enable auto-scaling.
On the Configuration tab, in the Access nodes tile, click Edit .
From the Access node list, select the scale profile's server group as the access node.
Click Save.