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  1. OpenShift Bugs
  2. OCPBUGS-42577

MachineConfigs should not have Restart=on-failure for oneshot systemd units

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    • MCO Sprint 260, MCO Sprint 261
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      * Previously, {op-system-base-full} CoreOS templates that were shipped by the Machine Config Operator (MCO) caused node scaling to fail on {rh-openstack-first}. This issue happened because of an issue with `systemd` and the presence of a legacy boot image from older versions of {product-title}. With this release, a patch fixes the issue with `systemd` and removes the legacy boot image, so that node scaling can continue as expected. (link:https://issues.redhat.com/browse/OCPBUGS-42577[*OCPBUGS-42577*])
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      * Previously, {op-system-base-full} CoreOS templates that were shipped by the Machine Config Operator (MCO) caused node scaling to fail on {rh-openstack-first}. This issue happened because of an issue with `systemd` and the presence of a legacy boot image from older versions of {product-title}. With this release, a patch fixes the issue with `systemd` and removes the legacy boot image, so that node scaling can continue as expected. (link: https://issues.redhat.com/browse/OCPBUGS-42577 [* OCPBUGS-42577 *])
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      This is a clone of issue OCPBUGS-42324. The following is the description of the original issue:
      —
      Description of problem:

      This is a spinoff of https://issues.redhat.com/browse/OCPBUGS-38012. For additional context please see that bug.

The TLDR is that Restart=on-failure for oneshot units were only supported in systemd v244 and onwards, meaning any bootimage for 4.12 and previous doesn't support this on firstboot, and upgraded clusters would no longer be able to scale nodes if it references any such service.

Right now this is only https://github.com/openshift/machine-config-operator/blob/master/templates/common/openstack/units/afterburn-hostname.service.yaml#L16-L24 which isn't covered by https://issues.redhat.com/browse/OCPBUGS-38012

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

      4.16 right now

      How reproducible:

      Uncertain, but https://issues.redhat.com/browse/OCPBUGS-38012 is 100%

      Steps to Reproduce:

          1.install old openstack cluster
    2.upgrade to 4.16
    3.attempt to scale node

      Actual results:

      Expected results:

      Additional info:

              team-mco Team MCO
              openshift-crt-jira-prow OpenShift Prow Bot
              Sergio Regidor de la Rosa Sergio Regidor de la Rosa
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