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  1. OpenShift Bugs
  2. OCPBUGS-57791

machine-config-controller report error failed to list *v1.MachineOSConfig: the server could not find the requested resource

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      Description of problem:

          The machine-config-controller pod report error during loaded upgrade with UDN

*v1.MachineOSConfig: the server could not find the requested resource (get machineosconfigs.machineconfiguration.openshift.io)
E0609 18:06:36.322046       1 reflector.go:158] "Unhandled Error" err="github.com/openshift/client-go/machineconfiguration/informers/externalversions/factory.go:125: Failed to watch *v1.MachineOSConfig: failed to list *v1.MachineOSConfig: the server could not find the requested resource (get machineosconfigs.machineconfiguration.openshift.io)"
W0609 18:07:34.768274       1 reflector.go:561] github.com/openshift/client-go/machineconfiguration/informers/externalversions/factory.go:125: failed to list *v1.MachineOSConfig:

      Version-Release number of selected component (if applicable):

      How reproducible:

      Steps to Reproduce:

          1. Created OCP 4.18.z with 24 worker node
    2. Execute udn-density-pod job using kube-burner-ocp tool
    3. Upgrade OCP4.18.z to OCP4.19 nighglty

    Logs: https://gcsweb-ci.apps.ci.l2s4.p1.openshiftapps.com/gcs/test-platform-results/pr-logs/pull/openshift_release/65681/rehearse-65681-periodic-ci-openshift-eng-ocp-qe-perfscale-ci-main-aws-4.19-nightly-x86-udn-loaded-upgrade-from-4.18-loaded-upgrade-418to419-24nodes-udn/1931997150326034432/artifacts/loaded-upgrade-418to419-24nodes-udn/gather-extra/artifacts/pods/openshift-machine-config-operator_machine-config-controller-7b4585d594-sr8vl_machine-config-controller.log
    and https://prow.ci.openshift.org/view/gs/test-platform-results/pr-logs/pull/openshift_rele[…]18-loaded-upgrade-418to419-24nodes-udn/1931997150326034432
     PR: https://github.com/openshift/release/pull/65681

      Actual results:

          There are a lot of such error *v1.MachineOSConfig: the server could not find the requested resource (get machineosconfigs.machineconfiguration.openshift.io) E0609 18:06:36.322046 1 reflector.go:158] "Unhandled Error" err="github.com/openshift/client-go/machineconfiguration/informers/externalversions/factory.go:125: Failed to watch *v1.MachineOSConfig: failed to list *v1.MachineOSConfig: the server could not find the requested resource (get machineosconfigs.machineconfiguration.openshift.io)" W0609 18:07:34.768274 1 reflector.go:561] github.com/openshift/client-go/machineconfiguration/informers/externalversions/factory.go:125: failed to list *v1.MachineOSConfig: 

    The upgrade failed

      Expected results:

          Need to investigate why report such error and if affect upgrade

      Additional info:

              umohnani Urvashi Mohnani
              rhn-support-liqcui Liquan Cui
              None
              None
              Sergio Regidor de la Rosa Sergio Regidor de la Rosa
              None
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                Created:
                Updated:
                Resolved: