On Tue, Mar 15, 2016 at 1:42 PM, Nico Kadel-Garcia <[log in to unmask]> wrote: > On Tue, Mar 15, 2016 at 8:32 AM, Nico Kadel-Garcia <[log in to unmask]> wrote: > >> The problem is that the $HOSTNAME for the system isn't published in >> DNS, nor is it the first hostname for a line in /etc/hosts, so the >> "hostname --fqdn" is not finding it associated with your IP addresses. >> The usual approach for portable laptops is to put a line like this in >> /etc/hosts somewhere. >> >> 127.0.0.1 mymachine.mydomain On SL6, I've adopted the Debian approach: # cat /etc/hosts 127.0.0.1 localhost 127.0.1.1 tadmin.test.cluster tadmin # cat /etc/sysconfig/network NETWORKING=yes HOSTNAME=tadmin # hostname tadmin # hostname -s tadmin # hostname -f tadmin.test.cluster # hostname -d test.cluster On SL7, libnss_myhostname does the job of the second "/etc/hosts" line (but with 127.0.0.2) automatically. To the OP: Where are you setting the domainname?