[Users] Failed to add gluster server

Hi, I just installed oVirt 3.2 than add a node 1 using fedora18, attach an iSCSI storage, and local ISO NFS, and the data center is alive. Than try to add a second node from the ISO ovirt-node-iso-2.6.1-20120228.fc18.iso, but get this error message: Failed to add gluster server node2.domain.com into cluster default. Gluster command[gluster peer probe 192.168.5.182] failed on server 192.168.5.181 On the second node I configured Optional password for adding Node through oVirt Engine UI On the engine when adding a new Host I add the values to Name, Address, and Root Password , and than get this error: Error: Cannot add host. SSH authentication failed, verify authentication parameters are correct (Username/password, public key etc). You may refer to the engine.log file for further details. I notice that I cannot login as root on the second node, so how can I add a node through oVirt Engine UI if it asks for a root password? What am I doing wrong? thanks