How to Change the Hostname on Debian (hostnamectl, /etc/hostname, /etc/hosts)

• 24 June 2026
• by: Felix Aubert
• in: Linux/Server Admin
• Tags: debian, etc/hosts, hostname, hostnamectl, Server Administration, systemd
• note: no comments

Change the hostname on Debian the right way: use hostnamectl set-hostname, update /etc/hostname and /etc/hosts (127.0.1.1), and avoid the sudo resolve-host error.

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