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  1. Hybrid Cloud Infrastructure Documentation
  2. HCIDOCS-454

Document 4- or 5-node control planes in day 1 with Assisted Installer [MGMT-18588]

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    • HCIDOCS 2024#13, HCIDOCS 2025#1, HCIDOCS 2025#2
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      Fix version: AI 2.37 

      Summary of change:

      From OCP 4.18, you can a install highly available cluster with 3 / 4 / 5 control plane nodes (rather than only 3) with baremetal / none platform, x86_64 CPU arch

      Required updates:

      • In the GUI chapter:
        • Document the new Number of Control Plane Nodes field (see MGMT-19300 and MGMT-19334 for additional information and screen captures)
        • Remove the Single Node OpenShift checkbox description.
      • In the API chapter, add the new Create Cluster parameter called control_plane_count, which is an integer (1 / 3 / 4 / 5). This parameter deprecates 
        high_availability_mode
      • Change every place where it is says exactly three control plane nodes

      Additional resources:

              rhn-support-tshwartz Talia Shwartzberg
              apinnick@redhat.com Avital Pinnick
              Dan Manor
              Benny Kopilov Benny Kopilov
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