How to setup hostname permanently

[Member jeffmernier]

Hi Folks,

During fresh installation I set up <hostname> to ‘antix’ but after reboot the hostname ($HOSTNAME) is ‘dhcppc7’. First question is: where ‘dhcppc7’ is coming from?
I have check <hostname> in /etc/hostname (and /etc/hosts) and it is ‘antix’ like it was provided during the installation.

I can change hostname from ‘dhcppc7’ to ‘antix’ with the script provided /etc/init.d/hostname.sh start
which reads from /etc/hostname and set $HOSTNAME temporarily to ‘antix’ but after reboot hostname is restored to ‘dhcppc7’

I also tried to start the hostname service at boot from
/usr/sbin/sysv-rc-conf on runlevels 2,3,4,5 but then X fails

rc-update-rc.d hostname defaults

sysv-rc-conf --list hostname
hostname     2:on       3:on    4:on    5:on    S:on

Has anybody knows a way to make this permanent?

Thanks!

• This topic was modified 2 months, 3 weeks ago by jeffmernier.
• This topic was modified 2 months, 3 weeks ago by jeffmernier.
• This topic was modified 2 months, 3 weeks ago by jeffmernier.

[Moderator Brian Masinick]

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https://duckduckgo.com/?q=how+to+change+linux+hostname+permanently&t=h_&ia=web is a search string that provides several answers.
One thing to do is to set the name of your system in the file /etc/hostname.
The second is to set the name and the address of your system in the file /etc/hosts.
Third, run: /etc/init.d/hostname restart.
All of these commands require privileged access.

https://www.tecmint.com/set-hostname-permanently-in-linux/ goes through some examples.
Since we do not use systemd, don’t follow any steps that reference it, whether from
tecmint or any other source.

--
Brian Masinick

[Member Xunzi_23]

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Hi, if connman is used it must also be taken in to consideration.
Manual and text points to need, the main.conf must be changed as
below.

/etc/connman/main.conf

# Allow ConnMan to change the system hostname. This can
# happen for example if we receive DHCP hostname option.
# Default value is true.
AllowHostnameUpdates = false

# Allow ConnMan to change the system domainname. This can
# happen for example if we receive DHCP domainname option.
# Default value is true.
AllowDomainnameUpdates = false

[Member jeffmernier]

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thanks so much! That worked. You’re good!

I believe I can restore /etc/init.d/hostname to /etc/init.d/hostname.sh script because /etc/init.d/hostname service was not involved in this issue.

• This reply was modified 2 months, 3 weeks ago by jeffmernier.

[Member xinomilo]

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always did :

hostname newname
echo 'newname' > /etc/hostname

that would change hostname. permanently.

and as @masinick writes, changes in /etc/hosts to be able to ping hostname (and some daemons use that, iirc).

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