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  1. OpenShift Request For Enhancement
  2. RFE-5417

AWS IPI: Enable setting the throughput flag for GP3 drives on master/worker instances during installation

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      Feature Overview (aka. Goal Summary)  

      An elevator pitch (value statement) that describes the Feature in a clear, concise way.  Complete during New status.

      Enable customization of throughput settings for rootVolume drives during the  installation of OpenShift in AWS to prevent production outages caused by the masters being capped at the default value of throughput.

      We're setting the type of the root volumes for the masters at install time in the install-config.yaml:

       

      controlPlane:
        name: master
        replicas: 3
        architecture: amd64
        hyperthreading: Enabled
        platform:
          aws:
            type: m5.4xlarge
            zones:
              - us-east-1a
              - us-east-1b
              - us-east-1c
            rootVolume:
              size: 500
              type: gp3

       

       

      Goals (aka. expected user outcomes)

      The observable functionality that the user now has as a result of receiving this feature. Include the anticipated primary user type/persona and which existing features, if any, will be expanded. Complete during New status.

      Will be able to customize the throughput settings of rootVolume drives at install time. This will enhance the existing feature of setting the root drives for the masters to customize the throughput capped to the default 125MiB/s (for GP3).

       

      controlPlane:
        name: master
        replicas: 3
        architecture: amd64
        hyperthreading: Enabled
        platform:
          aws:
            type: m5.4xlarge
            zones:
              - us-east-1a
              - us-east-1b
              - us-east-1c
            rootVolume:
              size: 500
              throughput: 250MiB/s
              type: gp3

       

      Requirements (aka. Acceptance Criteria):

      A list of specific needs or objectives that a feature must deliver in order to be considered complete.  Be sure to include nonfunctional requirements such as security, reliability, performance, maintainability, scalability, usability, etc.  Initial completion during Refinement status.

      Allow users to customize the throughput settings of rootVolume drives at install time

       

      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) Yes
      Hosted control planes Yes
      Multi node, Compact (three node), or Single node (SNO), or all All
      Connected / Restricted Network Both
      Architectures, e.g. x86_x64, ARM (aarch64), IBM Power (ppc64le), and IBM Z (s390x) All
      Operator compatibility Yes
      Backport needed (list applicable versions) N/A
      UI need (e.g. OpenShift Console, dynamic plugin, OCM) May be required
      Other (please specify) N/A

      Use Cases (Optional):

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

      A customer wants to install an OpenShift cluster in AWS. They want to set the root drives for the masters to be GP3 and customize the throughput settings at install time to prevent potential production outages.

      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.

      What are the technical challenges in implementing this feature?

      Out of Scope

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

      N/A

      Background

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

      The need for this feature arose from experiencing a few production outages where the masters were being capped at the default value of throughput.

      Customer Considerations

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

      Customers who frequently experience high levels of traffic and have experienced outages due to throughput limitations will greatly benefit from this feature.

      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.

      The existing documentation on installing OpenShift cluster in AWS will need to be updated to include instructions on how to customize the throughput settings of GP3 drives at install time.

      Current documentation

      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.

      None

            mak.redhat.com Marcos Entenza Garcia
            rhn-support-rnandanw Rajesh Nandanwar
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              Created:
              Updated:
              Resolved: