IBM Cloud Schematics is an Infrastructure as Code (IaC) tool that uses Terraform to create, update,
and manage cloud resources. To horizontally scale resources using IBM Cloud Schematics, a user
should add the necessary resources (such as additional virtual machines or instances) by updating
the Terraform configuration files and applying those changes through Schematics.
How Scaling is Achieved with IBM Cloud Schematics: Users can modify their existing infrastructure
definition to add new resources or adjust their configurations. These modifications can be made in
the Terraform files that are managed by Schematics. After the modifications, users apply the updated
configuration to scale resources horizontally (e.g., adding more instances to a resource pool).
Why IBM Cloud Schematics is the Correct Choice: Schematics manages infrastructure as code, which
is a more reliable, repeatable, and controlled way to manage changes and scale resources compared
to manual methods such as CLI.
Comparison with Other Options:
A (Add using CLI): Possible but not as efficient or manageable as using Schematics.
C (Destroy resources using Console): Irrelevant to scaling.
D (Destroy all and recreate): Not a practical or recommended approach for scaling.
Reference:
IBM Cloud Schematics Documentation
IBM Cloud Architect Exam Study Guide
