Feature Overview

Allow the user to create the Agent ISO image as a minimal ISO (sans rootfs).

This is supported for the external platform, added for OCI in 4.14. This adds support for the rest of the platforms supported by the agent-based installer.

Requirements

All platforms supported by agent can install using a minimal ISO:

• Bare metal
• none
• vSphere
• Nutanix
• External

Use Cases

1. User in a connected environment generates a minimal ISO; rootfs is automatically downloaded from mirror.openshift.com.
2. User in a disconnected environment generates a minimal ISO and rootfs, then uploads the rootfs to the bootArtifactsBaseURL they specified in agent-config.yaml.
3. By default users continue to generate a fully self-contained ISO (except on the external platform, where minimal is required).