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  1. OpenShift Virtualization
  2. CNV-75381

Enable DHCP services within IPAM for ovn-k8s-cni-overlay with localnet topology additional networks

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      When installing guest clusters with the Kubevirt provider via Hosted Control Planes we would like to disabled the default pod network and have compute nodes on OCP Virtualization exclusively use an additional network configured in OCP. This will be a directly connected network i.e. localnet. 

      On this same network at the fabric we have Cisco ACI with L3out and floating SVI enabled. Cisco have advised they do not support DHCP services on a network with these features enabled which results in our compute nodes never obtaining the network configuration they require. 

      As a workaround we have created an additional VM on the same network in OCP Virt and configured it as a DHCP Relay to forward requests to an upstream DHCP server. We would like to avoid the additional administration overhead of an additional VM to manage and instead have the ability in OpenShift to provide this configuration through the CNI.

              rsdeor Ronen Sde-Or
              rhn-support-jortialc Juan Orti
              Yoss Segev Yoss Segev
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                Created:
                Updated: