[ovirt-users] host node non-operational

Hello, I've installed a engine server and 2 host nodes. After install the 2 nodes I've configured a nfs domain storage in the first node. After few minutes, the second host is down and I dont put it online. The log in the engine show: attached to the Data Center Labs. Setting Host state to Non-Operational. The nfsexport Storage Domain Format is V4, but in the /etc/nfsmount.conf Defaultproto=tcp Defaultvers=3 Nfsvers=3 Also I've added the line NFS4_SUPPORT="no" to /etc/sysconfig/nfs file The node1's iptables rules are: ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED ACCEPT icmp -- anywhere anywhere ACCEPT all -- anywhere anywhere ACCEPT tcp -- anywhere anywhere tcp dpt:54321 ACCEPT tcp -- anywhere anywhere tcp dpt:54322 ACCEPT tcp -- anywhere anywhere tcp dpt:sunrpc ACCEPT udp -- anywhere anywhere udp dpt:sunrpc ACCEPT tcp -- anywhere anywhere tcp dpt:ssh ACCEPT udp -- anywhere anywhere udp dpt:snmp ACCEPT tcp -- anywhere anywhere tcp dpt:websm ACCEPT tcp -- anywhere anywhere tcp dpt:16514 ACCEPT tcp -- anywhere anywhere multiport dports rockwell-csp2 ACCEPT tcp -- anywhere anywhere multiport dports rfb:6923 ACCEPT tcp -- anywhere anywhere multiport dports 49152:49216 ACCEPT tcp -- anywhere anywhere tcp dpt:nfs ACCEPT udp -- anywhere anywhere udp dpt:nfs ACCEPT tcp -- anywhere anywhere tcp dpt:mountd ACCEPT udp -- anywhere anywhere udp dpt:mountd REJECT all -- anywhere anywhere reject-with icmp-host-prohibited And the output of showmount -e command in a terminal of node1 is: But the output of showmount -e node1 in a terminal of node2 is (No route to host) Any help? Thanks you in advance. Ángel González