Recently my team was tasked with changing the default VxLAN port, used by OpenShift to create SDN networks for the individual namespace (Project). Problem was, that we needed to do it on a running cluster, with no downtime. Why would you ever want to do something like that?! Well… we really did not want to do that. We were however forced by VmWares, highly questionable, implementation of VxLAN in there NSX product.