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Feature
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Resolution: Done
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Critical
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None
Feature Overview (aka. Goal Summary)
Replace an x86 Control Plane and infra nodes with arm64 in running cluster for customers who want to realise cost or power savings by moving over to an Arm based infrastructure. By auto-migrating just the control plane and infrastructure nodes the change can be made without impact to (i.e. the need to recompile and retest) the actual cluster workloads.
Requirements (aka. Acceptance Criteria):
Scenarios:
migrate x86 control plane to arm
migrate x86 infra nodes to arm
migrate both x86 control plane and infra nodes to arm
migrate arm control plane to x86
migrate arm infra nodes to x86
migrate both arm control plane and infra nodes to x86
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.
| Deployment considerations | List applicable specific needs (N/A = not applicable) |
| Self-managed, managed, or both | Both |
| Classic (standalone cluster) | Y |
| Hosted control planes | Y |
| Multi node, Compact (three node), or Single node (SNO), or all | Y |
| Connected / Restricted Network | Y |
| Architectures, e.g. x86_x64, ARM (aarch64), IBM Power (ppc64le), and IBM Z (s390x) | x86, Arm |
| Operator compatibility | n/a |
| Backport needed (list applicable versions) | n/a |
| UI need (e.g. OpenShift Console, dynamic plugin, OCM) | Maybe |
| Other (please specify) | n/a |
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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