[ovirt-users] Add more hosts

Hello again as I said I'm a beginner with OVirt and I was playing with a proof-of-concept cluster with OVirt 4.0 + GlusterFS 3.8, following this guide http://www.ovirt.org/blog/2016/03/up-and-running-with-ovirt-3-6/ (it works smoothly with 4.0 too) I've created the cluster and the engine is running as an higly available VM in the cluster itself with hosted-engine --deploy but now I want to add a fourth machine to the cluster but I get this error: Cannot automatically add the host to cluster Default: Cannot add Host. There is no available server in the cluster to probe the new server. both if I try to add an host from Ovirt AAdmin GUI or if I try to run "hosted-engine --deploy" on the new machine. Is it possible to have this cluster conf (with the engine running as a VM) with 4 or more machines? What thing should I have to do? Thanks in advance -- Davide Ferrari Senior Systems Engineer