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  1. OpenShift Bugs
  2. OCPBUGS-3630

[ExternalDNS] Enforce Recreate deployment update strategy to avoid conflicts during upgrades

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      Description of problem:

      As per the upstream update: https://github.com/kubernetes-sigs/external-dns/pull/2772. ExternalDNS is currently unable of handling multiple parallel instances (no leader election implemented). This may result into split brain situation during the rolling upgrades.
       

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

      1.1.0
       

      How reproducible:

      Manually
       

      Steps to Reproduce:

      1. Deploy any shipped version of ExternalDNS Operator
      2. Create ExternalDNS CR
      3. Check external-dns-operator namespace for the operand POD, see its update strategy set to RollingUpdate
      4. Change the CR in anyway without breaking it (e.g. disable/enable hostname annotation)
      5. See multiple operand PODs being active at the same time in external-dns-operator namespace
      

      Actual results:

      Multiple active operand PODs at the same time in external-dns-operator 
       

      Expected results:

      Recreate strategy for the operand PODs, single deployment during the upgrades
       

      Additional info:

       

       

              alebedev@redhat.com Andrey Lebedev
              alebedev@redhat.com Andrey Lebedev
              Melvin Joseph Melvin Joseph
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                Created:
                Updated:
                Resolved: