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How to set hostname and domain name in CentOS 7?

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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?

posted Apr 5, 2016 by Amit Parthsarthi

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Though there should be a 'domainname' command to set it as well, though I just prefer editing /etc/hosts directly.

commented Apr 5, 2016 by anonymous

1 Answer

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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 ...

answer Apr 5, 2016 by Sanketi Garg
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