[ovirt-users] add one node glusterfs more on ovirt-engine

Hi, I've one server ovirt-engine. I've trois nodes glusterfs on this ovirt-engine. Ex: ovirt-engine : ovirt-node1, ovirt-node2 and ovirt-node3. Now, I want add ovirt-node4. I tried with "Deploying oVirt and Gluster Hyperconverged". But it propose only trois nodes. Could you help me, please ? Best regard, Anne Garcia