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  1. RHEL
  2. RHEL-10195

Better dispatch way for DNS changes [RHEL 8]

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    • NetworkManager-1.40.16-12.el8
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    • rhel-sst-network-management
    • ssg_networking
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    • NMT - RHEL 8.10/9.4 DTM 06
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      Given a OCP cluster 4.12 or later version with nmstate operator with br-ex holding DNS configurations

      When customer using nmstate operator to change DNS settings using desire state which only contain DNS configuration with `br-ex` marked as ignored.

      Then NetworkManger will invoke dispatcher script of OCP `30-resolv-prepender` to setup the expected `/etc/resolv.conf`.

       

      Given a OCP cluster 4.12 or later version with nmstate operator installed.

      When customer using nmstate operator to create 50+ VLANs without DNS changes.

      Then the `30-resolv-prepender` will not change content of `/etc/resolv.conf`.

       

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      Given a OCP cluster 4.12 or later version with nmstate operator with br-ex holding DNS configurations When customer using nmstate operator to change DNS settings using desire state which only contain DNS configuration with `br-ex` marked as ignored. Then NetworkManger will invoke dispatcher script of OCP `30-resolv-prepender` to setup the expected `/etc/resolv.conf`.   Given a OCP cluster 4.12 or later version with nmstate operator installed. When customer using nmstate operator to create 50+ VLANs without DNS changes. Then the `30-resolv-prepender` will not change content of `/etc/resolv.conf`.  
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      The `30-resolv-prepender` NetworkManager dispatcher script of openshift
      has been invoked even there is no DNS changes at all.

      Introducing new NetworkManager dispatch event/action could eliminate the unneeded invoke of `30-resolv-prepender`

              ihuguet@redhat.com Inigo Huguet
              fge@redhat.com Gris Ge
              Network Management Team Network Management Team
              Matej Berezny Matej Berezny (Inactive)
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                Created:
                Updated:
                Resolved: