1. Proposed title of this feature request

Add warning while enabling techPreviewNoUpgrade feature

2. What is the nature and description of the request?

When a user enables the TechPreview feature set—either during cluster installation (Day-1) or via feature gate updates (Day-2)—there is currently no clear warning displayed about the long-term impact and lack of rollback support.

This lack of visibility has led to repeated cases where customers enable TechPreview features in production clusters, only to later request support for:

• Disabling or rolling back the feature set

• Removing individual TechPreview features

However, as outlined in the official documentation, such operations are unsupported, and the only recovery path is a full cluster rebuild.

Proposed Solution:
Introduce a clear, non-bypassable warning message during both:

• Day-1: When selecting TechPreviewNoUpgrade or any TechPreview feature gate during install (e.g., via openshift-install or assisted installer)

• Day-2: When updating the FeatureGate resource in a running cluster

Suggested warning message:

⚠️ You are enabling TechPreview features. These are not supported for production use. Once enabled, they cannot be rolled back or selectively removed. The only recovery path is to destroy and recreate the cluster. Proceed only if this is acceptable.

3. Why does the customer need this? (List the business requirements here)

• Customer installed cluster with techPreview feature, now unable to upgrade the cluster

4. List any affected packages or components.

• installer, nodes