Feature Overview (aka. Goal Summary)  

In a multi-cluster hub<>spoke model, Customers are looking to use cert-manager on their hub clusters and distribute TLS serving certificates to spoke clusters using ACM templates. 

 

Goals (aka. expected user outcomes)

This has been previously documented https://www.redhat.com/en/blog/securing-ingress-controllers-on-a-managed-openshift-cluster-using-red-hat-advanced-cluster-management

Customers would like a more formal documented process to manage the multi-cluster configuration using ACM and Cert-manager Operator for  RedHat OpenShift. The cert-manager Operator recently provided support for API and Ingress TLS certificates in version 1.13. The reference architecture should use the latest version and provide necessary configuration options. 

Requirements (aka. Acceptance Criteria):

Provide TLS Serving Certificates to Applications running on OpenShift in a Multi-cluster deployment with ACM and cert-manager Operator for RedHat OpenShift. 

Anyone reviewing this Feature needs to know which deployment configurations that the Feature will apply to (or not) once it's been completed.  Describe specific needs (or indicate N/A) for each of the following deployment scenarios. For specific configurations that are out-of-scope for a given release, ensure you provide the OCPSTRAT (for the future to be supported configuration) as well.

Use Cases (Optional):

Include use case diagrams, main success scenarios, alternative flow scenarios.  Initial completion during Refinement status.

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Questions to Answer (Optional):

Include a list of refinement / architectural questions that may need to be answered before coding can begin.  Initial completion during Refinement status.

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Out of Scope

High-level list of items that are out of scope.  Initial completion during Refinement status.

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Background

Provide any additional context is needed to frame the feature.  Initial completion during Refinement status.

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Customer Considerations

Provide any additional customer-specific considerations that must be made when designing and delivering the Feature.  Initial completion during Refinement status.

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Documentation Considerations

Provide information that needs to be considered and planned so that documentation will meet customer needs.  If the feature extends existing functionality, provide a link to its current documentation. Initial completion during Refinement status.

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Interoperability Considerations

Which other projects, including ROSA/OSD/ARO, and versions in our portfolio does this feature impact?  What interoperability test scenarios should be factored by the layered products?  Initial completion during Refinement status.

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