LinuxQuestions.org - [SOLVED] Hostname always back to old one after reboot

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Hostname always back to old one after reboot

Hi,

My old hostname was "main".

I changed it:

Code:

hostname audio

I also wrote it:

Code:

echo audio > /etc/hostname

And for my ip addresses:

Code:

# cat /etc/hosts

127.0.0.1                localhost

192.168.10.12                audio.example.org audio

192.168.200.1                audio.example.org audio

 

# ifconfig

eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.10.12  netmask 255.255.255.0  broadcast 192.168.10.255

        ether 44:8a:5b:9a:xx:xx  txqueuelen 1000  (Ethernet)

        RX packets 186  bytes 17511 (17.1 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 120  bytes 23567 (23.0 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

        device interrupt 18  



eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.200.1  netmask 255.255.255.0  broadcast 192.168.200.255

        ether 68:05:ca:27:xx:xx  txqueuelen 1000  (Ethernet)

        RX packets 0  bytes 0 (0.0 B)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 0  bytes 0 (0.0 B)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

        device interrupt 19  memory 0xf78c0000-f78e0000  



lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536

        inet 127.0.0.1  netmask 255.0.0.0

        loop  txqueuelen 0  (Local Loopback)

        RX packets 4  bytes 344 (344.0 B)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 4  bytes 344 (344.0 B)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

But after rebooting:

Code:

# hostname

main



# cat /etc/hostname 

audio



# cat /etc/hosts

127.0.0.1                localhost

192.168.10.12                audio.example.org audio

192.168.200.1                audio.example.org audio

Slackware64 14.1, but very custom built.

How on earth is it possible???
Where is "main" written? I can't find it anywhere with grep...

THANKS!

Hello.

hostname "named" is equivalent to writing the specified name into /proc/sys/kernel/hostname, which means it will not survive reboot, is only "memory temporal". If you want to make this permanent on Slackware, there is no /etc/hostname file but there is /etc/hosts which you can define the hostname of your server, in my case, I have Slack 14.1 (32 bits but this is irrelevant) and her name is "icinga" this is how my /etc/hosts file looks like:

# For loopbacking.
127.0.0.1 localhost
127.0.0.1 icinga.covenco.cl icinga

And it does survive after reboot :) you can edit this manually or you can do it using Slackware "configuration tools" , run in the command prompt pkgtool -> Setup -> netconfig

And there reconfigure your network and hostname, changes will be saved and keep on each reboot.

Regards.

Thank you littleball,

Unfortunately, that does not work.
And I'm not surprised because I connect in ssh and I already defined this for my LAN addresses, so it should not consider the localhost address.

PS: note that hostname is the same on local screen without ssh.

I am not very clever with networking, sorry if I cannot explain too much deep into it. If you edit inside Slackware 14.1 Server /etc/hosts file like this:

# cat /etc/hosts
127.0.0.1 localhost audio
192.168.10.12 audio.example.org audio
192.168.200.1 audio.example.org audio

and reboot networking /etc/rc.d/rc.inet1 restart, logout and login and do "hostname" command, do you keep getting the output of "main"?. Slackware won,t read /etc/hostname this is not an standard hostname path for Slack, (it is for other linux distros), Slack reads from /etc/hosts, you need to add hostname there but on localhost.

Just in case you still want to know the default hostname file path of Slackware, edit /etc/HOSTNAME - yes HOSTNAME using caps -. Using /etc/hosts should be enough, or running netconfig as root and making changes, but if you want to edit /etc/HOSTNAME, you should see "main" word there :) . rc.M boot script reads from that file to set Slackware hostname.

regards.

AHHH!!! :)
That's it!

It's uppercase HOSTNAME and not hostname!
SOLVED!

Thank you! :)

You,re welcome MisterBark, glad you solved it :)