On 5 April 2016 at 20:24, Joe Smithian <joe.smithian at gmail.com> wrote: > We can permanently set hostname using hostnamectl set-hostname. How can we > permanently set *domain name* in CentOS 7? > I found an article > < > http://unix.stackexchange.com/questions/239920/how-to-set-the-fully-qualified-hostname-on-centos-7-0 > > > that recommended setting FQDN using hostnamectl. Is that the right way to > set hostname and domainname at the same time using *hostnamectl > set-hostname* command? > > Running *hostnamectl set-hostname* will set the hostname in* > /etc/hostname* > but it doesn't change */etc/hosts*. What's the proper way of adding > hostname and FQDN to */etc/hosts *in CentOS 7? > > Technically speaking one shouldn't put the hostname in /etc/hosts as it's not required so long as your DNS is working ... which it should be ...