Epic Goal

Enhance the ClusterCurator controller to support setting the upgrade channel on HostedCluster custom resources and managing channel-based upgrades for hosted clusters.

Why is this important?

Currently, hosted clusters in ACM/MCE console do not show recommended upgrade paths because the Cluster Version Operator (CVO) update recommendations are unavailable, and the UI relies on less precise cluster image set resources. By implementing channel selection and properly syncing CVO status to ManagedClusterInfo, we can provide a safer, more consistent upgrade experience aligned with standard OpenShift clusters.

Scenarios

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Acceptance Criteria

• ClusterCurator can read channel selection from Job (requesting HostedCluster channel update)
• ClusterCurator updates HostedCluster CR's .spec.channel field
• Change trigger CVO to begin reporting available updates
• ClusterCurator updates HostedCluster CR with proper release image reference from Job (requesting HostedCluster upgrade)
• ClusterCurator can translate version selection to digest-based release pull spec

Dependencies (internal and external)

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Previous Work (Optional):

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Open questions:

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Done Checklist

• CI - CI is running, tests are automated and merged.
• Release Enablement <link to Feature Enablement Presentation>
• DEV - Upstream code and tests merged: <link to meaningful PR or GitHub
  Issue>
• DEV - Upstream documentation merged: <link to meaningful PR or GitHub
  Issue>
• DEV - Downstream build attached to advisory: <link to errata>
• QE - Test plans in Polarion: <link or reference to Polarion>
• QE - Automated tests merged: <link or reference to automated tests>
• DOC - Doc issue opened with a completed template. Separate doc issue
  opened for any deprecation, removal, or any current known
  issue/troubleshooting removal from the doc, if applicable.
• Considerations were made for Extended Update Support (EUS)