[ovirt-users] ovirt hosted ha: Failed to start monitoring domain

I've got four nodes with ovirt-3.5. They share the a gluster domain of four replica with hosted-engine in it. After a reboot on each of them, the hosted-engine just cannot get up. ---------------------------------- [root@hosta ~]# hosted-engine --vm-status --== Host 1 status ==-- Status up-to-date : False Hostname : hosta.vf.com Host ID : 1 Engine status : unknown stale-data Score : 2400 Local maintenance : False Host timestamp : 414854 Extra metadata (valid at timestamp): metadata_parse_version=1 metadata_feature_version=1 timestamp=414854 (Tue Mar 10 12:50:34 2015) host-id=1 score=2400 maintenance=False state=GlobalMaintenance --== Host 2 status ==-- Status up-to-date : False Hostname : hostb.vf.com Host ID : 2 Engine status : unknown stale-data Score : 2400 Local maintenance : False Host timestamp : 421801 Extra metadata (valid at timestamp): metadata_parse_version=1 metadata_feature_version=1 timestamp=421801 (Tue Mar 10 12:50:38 2015) host-id=2 score=2400 maintenance=False state=GlobalMaintenance --== Host 3 status ==-- Status up-to-date : False Hostname : hostc.vf.com Host ID : 3 Engine status : unknown stale-data Score : 2400 Local maintenance : False Host timestamp : 421797 Extra metadata (valid at timestamp): metadata_parse_version=1 metadata_feature_version=1 timestamp=421797 (Tue Mar 10 12:50:40 2015) host-id=3 score=2400 maintenance=False state=GlobalMaintenance --== Host 4 status ==-- Status up-to-date : False Hostname : hostd.vf.com Host ID : 4 Engine status : unknown stale-data Score : 2400 Local maintenance : False Host timestamp : 421796 Extra metadata (valid at timestamp): metadata_parse_version=1 metadata_feature_version=1 timestamp=421796 (Tue Mar 10 12:50:48 2015) host-id=4 score=2400 maintenance=False state=GlobalMaintenance