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  1. OpenShift Bugs
  2. OCPBUGS-66328

[AWS] After remove EgressIP node tag,some EIPs were not assigned to available egress node

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      Description of problem:

      We have one auto case 47028 flaky failing in CI jobs, and then be able to reproduce it locally.
      
          

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

      4.21.0-0.nightly-2025-11-22-193140
          

      How reproducible:

      Sometimes
      
          

      Steps to Reproduce:

          1.    Label one node as egress node
          2.    Create some EIP objects
      % oc get egressip
      NAME          EGRESSIPS     ASSIGNED NODE                              ASSIGNED EGRESSIPS
      egressip-1    10.0.27.101   ip-10-0-42-69.us-east-2.compute.internal   10.0.27.101
      egressip-10   10.0.27.110   ip-10-0-42-69.us-east-2.compute.internal   10.0.27.110
      egressip-11   10.0.27.111   ip-10-0-42-69.us-east-2.compute.internal   10.0.27.111
      egressip-12   10.0.27.112   ip-10-0-42-69.us-east-2.compute.internal   10.0.27.112
      egressip-13   10.0.27.113   ip-10-0-42-69.us-east-2.compute.internal   10.0.27.113
      egressip-14   10.0.27.114   ip-10-0-42-69.us-east-2.compute.internal   10.0.27.114
      egressip-15   10.0.27.115                                              
      egressip-2    10.0.27.102   ip-10-0-42-69.us-east-2.compute.internal   10.0.27.102
      egressip-3    10.0.27.103   ip-10-0-42-69.us-east-2.compute.internal   10.0.27.103
      egressip-4    10.0.27.104   ip-10-0-42-69.us-east-2.compute.internal   10.0.27.104
      egressip-5    10.0.27.105   ip-10-0-42-69.us-east-2.compute.internal   10.0.27.105
      egressip-6    10.0.27.106   ip-10-0-42-69.us-east-2.compute.internal   10.0.27.106
      egressip-7    10.0.27.107   ip-10-0-42-69.us-east-2.compute.internal   10.0.27.107
      egressip-8    10.0.27.108   ip-10-0-42-69.us-east-2.compute.internal   10.0.27.108
      egressip-9    10.0.27.109   ip-10-0-42-69.us-east-2.compute.internal   10.0.27.109
          3.  Label another node as egress node and unlabel previous egress node
       oc label node ip-10-0-42-69.us-east-2.compute.internal k8s.ovn.org/egress-assignable-; oc label node ip-10-0-43-77.us-east-2.compute.internal k8s.ovn.org/egress-assignable=
      4. Repeat step3 for changing egress node for a couple of times
          

      Actual results:

      $ oc get egressip
      NAME          EGRESSIPS     ASSIGNED NODE                              ASSIGNED EGRESSIPS
      egressip-1    10.0.27.101   ip-10-0-43-77.us-east-2.compute.internal   10.0.27.101
      egressip-10   10.0.27.110   ip-10-0-43-77.us-east-2.compute.internal   10.0.27.110
      egressip-11   10.0.27.111   ip-10-0-43-77.us-east-2.compute.internal   10.0.27.111
      egressip-12   10.0.27.112   ip-10-0-43-77.us-east-2.compute.internal   10.0.27.112
      egressip-13   10.0.27.113   ip-10-0-43-77.us-east-2.compute.internal   10.0.27.113
      egressip-14   10.0.27.114   ip-10-0-43-77.us-east-2.compute.internal   10.0.27.114
      egressip-15   10.0.27.115   ip-10-0-43-77.us-east-2.compute.internal   10.0.27.115
      egressip-2    10.0.27.102   ip-10-0-43-77.us-east-2.compute.internal   10.0.27.102
      egressip-3    10.0.27.103   ip-10-0-43-77.us-east-2.compute.internal   10.0.27.103
      egressip-4    10.0.27.104   ip-10-0-43-77.us-east-2.compute.internal   10.0.27.104
      egressip-5    10.0.27.105   ip-10-0-43-77.us-east-2.compute.internal   10.0.27.105
      egressip-6    10.0.27.106                                              
      egressip-7    10.0.27.107                                              
      egressip-8    10.0.27.108                                              
      egressip-9    10.0.27.109  
      bash-3.2$ oc get cloudprivateipconfigs -ocustom-columns=NAME:.metadata.name,NODE:.spec.node,STATE:.status.conditions[].reason | grep CloudResponseSuccess | wc -l
            11
      bash-3.2$ oc get cloudprivateipconfigs -ocustom-columns=NAME:.metadata.name,NODE:.spec.node,STATE:.status.conditions[].reason | grep CloudResponseError | wc -l
             0
      
       % oc describe node ip-10-0-43-77.us-east-2.compute.internal   | grep capacity
                            [{"interface":"eni-0cfca2ec6c2267c7b","ifaddr":{"ipv4":"10.0.0.0/18"},"capacity":{"ipv4":14,"ipv6":15}}]
          

      Expected results:

      Should have 14 EIPs assigned to available egress node 
          

      Additional info:

      
          

              rhn-support-arghosh Arnab Ghosh
              huirwang Huiran Wang
              Aniket Bhat, Arnab Ghosh, Roshni Pattath
              None
              Huiran Wang Huiran Wang
              None
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                Created:
                Updated: