Installing Openshift 4 cluster on a single bare-metal machine

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I am trying to install an Openshift 4 cluster on a bare-metal machine (i7 4-core 64GB RAM) running CentOS 7. First, I plan on installing Openstack 7 on it and create a few virtual hosts using floating IPs. Then, installing the Openshift cluster on these virtual nodes. The goal is only to have a sandbox Openshift cluster (not Minishift), and not a production cluster.

Before going down this path, I wanted to see if there were better ways of achieving this goal on a single bare-metal machine with one public IP. Any suggestions or thoughts would be appreciated? Thanks!