Hostname reverting

Posted January 14, 2019
Getting Started CentOS

I’m running some centos7 droplets. I’ve followed other posts saying to update hosts and hostname to change the hostname of the droplet and that works fine. A reboot to two later however and the hostname file has reverted back to its original content. How do I stop that from happening?

Richard Sutor

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Mouhsen Ibrahim • January 14, 2019

@ssutor

To change the hostname and preserve changes after a reboot you have to do two things:

1- Change the hostname in /etc/hostname file.

2- Execute this command: hostname <new_host_name> replace <new_host_name> with your desired hostname also you need to update /etc/hosts with an entry for the new hostname and your droplet’s IP address.

Hope this helps.

unixynet • January 14, 2019

Are you running NetworkManager? Here are a few more places to check if you haven’t already:

hostnamectl set-hostname your.host.name
/etc/sysconfig/network # set variable HOSTNAME="your.host.name"
/etc/hostname

Cheers

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