I have a test lab deployed on three nodes for testing software on virtual machines. Quite often we have to give access to third parties to virtual machines to test their software in our environment. We do not want to disclose how many physical nodes we have, but they see the infrastructure, which is not very good for us. We solved the issue of placing iso images using nfs and restrict the user from changing the VM configuration. I would also like to implement a single entry point, for example, a load balancer based on nginx. It happens that a node is turned off or in a reboot, while they try to connect to it and start looking through addresses, for example node01.domain.tld, node02.domain.tld, etc. Since the cluster is raised, the scheme works. But I would like to use, for example, a single name cloud.domin.tld