How to set your hostname the hard way
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| Author | Content |
|---|---|
| kikinovak Mar 02, 2016 1:15 AM EDT |
On my Slackware boxes, I just put the hostname in /etc/HOSTNAME and /etc/hosts. No 'hostnamectl' nonsense here. |
| penguinist Mar 02, 2016 10:06 AM EDT |
One more reason that I'm happy to keep my servers on CentOS 6, no hostnamectl nonsense there either. |
| jdixon Mar 02, 2016 12:46 PM EDT |
> I just put the hostname in /etc/HOSTNAME and /etc/hosts. Does that change the current name, or does it only take effect when the machine is rebooted? I was under the impression you had to use the hostname command to change the current name. But I've never had to change the hostname on a running machine, so I'm not certain. |
| dotmatrix Mar 02, 2016 12:56 PM EDT |
@jdixon: You are correct. $man hostname /etc/hostname Historically this file was supposed to only contain the hostname and not the full canonical FQDN. Nowadays most software is able to cope with a full FQDN here. This file is read at boot time by the system initialization scripts to set the hostname. |
| nmset Mar 02, 2016 1:39 PM EDT |
I just used hostnamectl to change that name 2 days ago and did not reboot. No problem until now. That doesn't seem a nonsense utility. Is it because it's a systemd tool ? |
| jdixon Mar 02, 2016 2:23 PM EDT |
> just used hostnamectl to change that name 2 days ago and did not reboot. You don't need to reboot if you use the hostname command either. It just that (for Slackware) if you only change /etc/HOSTNAME, it's only read on a reboot. |
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