To Reproduce Steps to reproduce the behavior:

I think that for this guide section 

9.2. Creating the control plane 

https://docs.redhat.com/en/documentation/red_hat_openstack_services_on_openshift/18.0/html/deploying_a_network_functions_virtualization_environment/create-ctrl-plane-nfv

statement "

• Replace <path> with the absolute path to the vhost sockets, for example, /var/lib/vhost.

"

should be "
/var/lib/vhost_sockets
"

but not "

• /var/lib/vhost.

"