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  1. OpenShift Container Platform (OCP) Strategy
  2. OCPSTRAT-1106

Priority based expander for cluster-autoscaler

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    • OCPSTRAT-12(OUTCOME STUB) Cloud platform activation/retention for Managed OpenShift (ROSA/ARO/OSD non-Hypershift enhancements)
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    Description

      Market Problem

      • As an OpenShift cluster administrator, I want to use the Priority based expander for cluster-autoscaler to select instance types based on priorities assigned by a user to scaling groups.
        The Configuration is based on the values stored in a ConfigMap
      apiVersion: v1
kind: ConfigMap
metadata:
  name: cluster-autoscaler-priority-expander
  namespace: kube-system
data:
  priorities: |-
    10: 
      - .*t2\.large.*
      - .*t3\.large.*
    50: 
      - .*m4\.4xlarge.*

      Expected Outcomes

      • When creating a MachineSet, customers would like to define their preferred instance types with priorities so that if one is not available a fallback instance type option is available down the list.

      https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/expander/priority/readme.md

      Attachments

        Issue Links

          is cloned by

          Feature - Capability or a well-defined set of functionality that delivers business value. Features can include additions or changes to existing functionality. Features can easily span multiple teams, and potentially multiple releases. OCPSTRAT-1337 Support Priority based expander for cluster-autoscaler in ROSA HCP

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Refinement
          relates to

          Bug - A problem that impairs or prevents the functions of the product. OCPBUGS-11115 Autoscaler does not work after entering in failed status for a single machineautoscaler

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • ASSIGNED

          Feature - Capability or a well-defined set of functionality that delivers business value. Features can include additions or changes to existing functionality. Features can easily span multiple teams, and potentially multiple releases. OCPSTRAT-1101 Provide instance type fallbacks in CAPI

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • New
          links to

          Web Link OpenShift Comparative Autoscaling Cost Analysis - January 2024

          Activity

            People

              rh-ee-smodeel Subin MM
              rh-ee-smodeel Subin MM
              Joel Speed, Michael McCune, Simon Reber
              Michael McCune Michael McCune
              Zhaohua Sun Zhaohua Sun
              Jeana Routh Jeana Routh
              Joel Speed Joel Speed
              Joel Speed Joel Speed
              Subin MM Subin MM
              Eric Rich Eric Rich
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              Dates

                Created:
                Updated: