CentOS 7.4 (Fresh install) oVirt 4.2.0-0.0.master.20171030093856.gitc4dc9af.el7.centos When I deployed hosted-engine I got a DNS warning just before the configuration preview step. WARNING: Host name <short hostname> has no domain suffix WARNING: Failed to resolve <short hostname> using DNS, it can be resolved only locally --== CONFIGURATION PREVIEW ==-- ... Host address : <short hostname> ... However hostname and hostnamectl return a FQDN, domainname on the other hand returns (none) dig <short hostname> as used by the installer fails to return IP address nslookup <short hostname> does return the correct FQDN and IP address Installation did finally suceed, but it took an age ( 20 + minutes ) looking like the process had hung waiting for VDSM