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  1. OpenShift Workloads
  2. WRKLDS-872

Declarative Node Maintenance

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Details

    • 13
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    • OCPSTRAT-46 - Strategic Upstream Work - OCP Control Plane and Node Lifecycle Group
    • Workloads Sprint 242, Workloads Sprint 243, Workloads Sprint 244, Workloads Sprint 245, Workloads Sprint 246, Workloads Sprint 247, Workloads Sprint 248, Workloads Sprint 249, Workloads Sprint 250, Workloads Sprint 251, Workloads Sprint 252

    Description

      Explore issues that plague node maintenance and introduce a new API that could be used by various components to solve these issues (e.g. prevent cluster upgrades from being wedged).

      • workloads should have more control and a way to react to node maintenance by either removing pods or migrating pods from the maintained node
      • workloads should have a way of providing feedback to the cluster admin on the progress of node maintenance
      • cluster admin should have a way to identify workloads that are preventing the node drain / cluster-upgrade
      • this should take into account the PDB lifecycle, the core workload controllers, but also external components like CRDs and node autoscalers
      • the API should allow for customization of the node maintenance process in the future

      issue: https://github.com/kubernetes/enhancements/issues/4212
      KEP: https://github.com/kubernetes/enhancements/pull/4213

      Attachments

        Issue Links

          blocks

          Story - Created by Jira Software - do not edit or delete. Issue type for a user story. WRKLDS-1077 Descheduler: support evictions in background

          • Normal - To be worked after urgent and high priorities are resolved. This term is chosen when the severity of an issue is relatively close to the level of effort to fix it. The existence of an easily implemented workaround can also lead to this priority level instead of a higher priority.
          • To Do

          Story - Created by Jira Software - do not edit or delete. Issue type for a user story. WRKLDS-655 Upgrade block because of PDBs

          • 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.
          • In Progress

          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-580 Pod Priority Based Graceful Node Shutdown

          • 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.
          • In Progress
          is blocked by

          Story - Created by Jira Software - do not edit or delete. Issue type for a user story. WRKLDS-1178 Evacuation API

          • 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.
          • In Progress
          relates to

          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-789 Unblock OCP upgrades from PDB block for uninterrupted upgrade experience

          • Critical - To be worked on immediately following BLOCKER issues.
          • New

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              fkrepins@redhat.com Filip Krepinsky
              fkrepins@redhat.com Filip Krepinsky
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              Dates

                Created:
                Updated: