Opennebula installation and configuration in cluster mood

Please, describe the problem here and provide additional information below (if applicable) …

— How to install and configure opennebula in cluster mood? I want to create virtual OS inside the physical system and want to communicate in between a physical OS and virtual OS.

Versions of the related components and OS (frontend, hypervisors, VMs):

Steps to reproduce:

Current results:

Expected results:

What is the best way to install and configure opennebula 5.6.2 in one single system? So front end and node will be installed in one single system. Actually I’m unable to proceed with “Step4: Configure Passwordless SSH” step of this documentation link “”. How to follow step 4 in one single system?