Debian :: Trying To Change Hostname Through SSH

Apr 15, 2010

I tried to change hostname through ssh.
Old hostname = server1
New hostname = server1.domain.local

I changed the hostname by editing the /etc/hostname file

Then I executed /etc/init.d/, and get as below, looks OK!
hostname -f
hostname -s

The logs are still just showing server1.
tail -f /var/log/auth.log
Apr 15 13:30:01 server1 CRON[22783]: pam_unix(cron:session): session opened for user root by (uid=0)
Apr 15 13:30:02 server1 CRON[22783]: pam_unix(cron:session): session closed for user root

Do I really have to reboot, or is this normal behaviour that it does not show the full hostname?

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Fedora :: 14 - Way To Change Hostname ?

Jan 19, 2011

Is there any way to change Hostname in Fedora 14?

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CentOS 5 :: How To Change The Hostname

Aug 12, 2010

I have changed my hostname to - by

1) editing the files /etc/sysconfig/network

2) then run the command - echo "" > /proc/sys/kernel/hostname

3) then restarted the service /etc/init.d/network restart

I run the command hostname and it returns But I am also supposed to modify the /etc/hosts file. I am not sure about this. The content looks like this at the moment localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6

What should my host file look like now? I am not sure if I should also modify the second line or delete it etc.

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Fedora Networking :: How To Change Hostname To Rodder

Oct 1, 2009

Yesterday, while trying on establishing mobile broadband, my hostname changed, and I can't make it yet. My /etc/hosts is

1 localhost.localdomain localhost
2 roddur
3 ::1 localhost.localdomain roddur

The second line I edited but after a reboot it inserted the first line all automatically and my /etc/sysconfig/network is

2 HOSTNAME=roddur

What I have to do if I have to change my hostname to "roddur"?

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OpenSUSE Network :: How To Change Hostname In SLES11

Jan 11, 2010

How do you change the hostname in SLES11? I have normally used the /etc/hostname file and rebooted the server in other distros. I only notice the way to change it is in yast2 -> network devices -> network settings -> Hostnames. I am looking for where it is stored because I want to write a script to update it (apart of a server deployment process).

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OpenSUSE Network :: Unable To Change The Hostname?

Apr 10, 2011

I've a little trouble: I reinstalled on my notebook OpenSUSE 11.3 yesterday and I'm unable to change the hostname. I modified it, but when I type on terminal

uname -a

it doesn't give the right answer but returns


I don't know where I wrong because I did this action many times with Opensuse 11.1 and 11.3 without any problem.

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Ubuntu :: Sudo Broken After Hostname Change

Nov 2, 2010

I changed my hostname by running sudo gedit /etc/hostname and changing the word there. Then I discovered that hadn't done anything so I used sudo hostname newname. My hostname was changed then but I tried to run sudo gedit /some/thing/else.txt and it said:

sudo: unable to resolve host newname
No protocol specified

(gedit:5512): Gtk-WARNING **: cannot open display: :0.0 and it says the same with sudo or gksudo for any program that has a gui including synaptic. I can run vi but I have no idea how to use it. I think the problem lies in the lines in /etc/hosts which still say


with the problem being that it still says localhost and my local IP address are ubuntu instead of newname. So if you could tell me how to edit that with vi or some other command line program

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Ubuntu Servers :: Possible To Change Hostname Of Machine In GUI

Nov 27, 2010

I have a problem with server bcs of the machine name. I'm wondering how to change the server name to it's IP. bcs now it has name "chrochne". I've found hostname in /etc/host and in /etc/hostname. But I'm afraid of changing it in this files. I'm using webmin and virtualmin to admin the server so can I change the name somewhere in the GUI?

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General :: Any Way To Change Hostname Of RedHat 9 Machine?

Apr 1, 2010

I want to change the Hostname of my Red Hat9 Linux machine using command line. By default it show me as following
[root@localhost root]#

I want to see it as
[root@pc1 root]#

Is there any way to change host name?

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OpenSUSE Install :: How To Change Random Hostname Of System

Aug 29, 2010

How generally to change the hostname. When the system was installed the there was given random hostname and I am wondering how to change it.

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OpenSUSE Network :: How To Change Computer Description (Hostname)

Mar 14, 2011

When browsing in WinXP Windows Explorer to view an OpenSUSE computer, the displayed name is:
Samba 3.5.4-5.3.1-2489-SUSE-SL11.3 (*hostname*)

Other Windows computers display as:
[computer description]([hostname])

How can I change the "computer description" within OpenSUSE?

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General :: Bash Script To Change Hostname For RHEL

Jan 15, 2011

I'm trying to write a script to change the hostname of the computer at the first boot. The reason why I need this script is because I manage a number of training computer and I use Ghost to re-image it every 2 months. The script will read the mac address and the hostname from a csv file and compare it with the mac address on the current machine. I have stuck and don't know what is wrong as I'm new with script.

csv format:
00:11:22:33:44:55 host01
00:11:22:33:44:56 host02

# Description
# Change HOSTNAME for each machine from CSV file
# CSV File Format
# Each line contains two columns - mac address & hostname
# Description End .....

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General :: Hostname Change Using System Config Network

May 4, 2010

My colleague changed the hostname using "system-config-network", but now I want to change it using any how (either system-config-network or /etc/sysconfig/network). Even I changed it from /etc/sysconfig/network. But when I reboot the system its getting old hostname. Is there some other place to change hostname?

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CentOS 5 :: Mail Stopped Working After Hostname Change

Aug 18, 2010

I built the system with one name and now want to change it.I do the usual things. change the /etc/hosts file change the hostname with the command hostname newname changed /etc/sysconfig/network and then mail stops working. Put it back to the old name and it works fine.So I am guessing I am missing something in the configuration for sendmail. I checked the file under /etc/mail and no reference back to the hostname was found.I also tried the GUI on the console to change the hostbname.

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Fedora Networking :: Change The 'DHCPclient' Hostname Send To Router?

May 6, 2011

first time user of F14 here. Used PCLinuxOS so far. Installed F14 fine , got samba up, set the hostname of the box to fedora.linux BUT when I connect to my wireless router (Belkin) the hostname shown in the routers DHCP client list is different:
Router shows:

IP Address-----Host Name-----------------MAC Address
In terminal it shows
[dagaz@fedora ~]$ hostname
[dagaz@fedora ~]$

When I search the forum or google, I end up with hostsfile or samba howtos. Those settings all show the right name : fedora.linux Why does the router show ralf-FK7 etc..? and where can I change it?

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OpenSUSE Network :: Hostname Change Via YaST Not Applied After Restart

Apr 1, 2011

I installed openSUSE on my notebook with an usb drive using openSUSE 11.4 KDE LIVE iso. The installation process set the name to "linux-ygrl" which I don't really like. (I probably just missed the setting during the installation.). I tried to change it through YaST -> Network -> Hostnames and I set everything where needed to the new name and restarted but the changed weren't applied. I searched the web and found out about the /etc/HOSTNAME file which still contains "linux-ygrl". Now I could change it manually but I was wondering if there is a GUI for it? (I mean, openSUSE has for alsmost everything a GUI.

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CentOS 5 Networking :: Change A Systems Hostname And IP Address Via Script?

Dec 14, 2010

I am looking for a way via script to change a systems hostname and IP address!

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General :: Ubuntu 9.10 Networking Hostname / Can Ping The Linux Box Using Its Hostname From A WinXp. But Cannot Do The Reverse?

Jan 3, 2010

I have a network of 2 WinXP machines and one linux box. I have fiddled around with the settings as you do when learning. The network is working. The network neighbourhood on the WinXP machines recognise the linux box and vice versa, (the linux Places|Network recognises the 2 WinXP). I can Ping the linux box using its hostname from a WinXp. But I cannot do the reverse. I get an 'unknown host' response. I can ping the linux to itself using its hostname.

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Networking :: FC13 Install Can Ping By Hostname - Ssh By Hostname Fails

Jul 29, 2010

I'm having an issue on two Fedora Core 13 machines where I can ping others by hostname, but the hostname resolution fails whenever I use ssh/scp/vnc/etc. I can still do these things by IP address, just not by hostname. RHEL5.3 machines on the same network with the same configuration do not seem to have this problem.

Here's the not-so-quick-and-dirty description of the situation:

I know that there is a virtual router at and another at I also know that there is another network (let's call it and on that network lies a number of resources. By nature of this configuration, any machine on can be accessed by any 192.168.x.x, but not the other way around. Beyond that is out of my hands and currently out of my scope of knowledge.

I have a dnsmasq server on that operates as a secondary nameserver, another machine out of my sphere of influence is the primary nameserver (

The secondary nameserver on holds the hostnames of our development machines. The problem is that in some cases, while I can ping by hostname all day long, services such as ssh, scp, vncviewer, etc all fail to resolve the hostname. In other cases I can do all of these things.

Every machine has an equivalent resolv.conf:

As an example, I will show the output of a handful of my development machines:

I also included columbia as a one-way test -- even though it cannot access 30.x or 31.x, they can access it:

columbia -- physical machine, Red Hat Enterprise 5.3, IP

Okay, so here are the various outputs. Remember, nibbler, discovery, and atlantis can ALL:
- Ping by IP address
- Ping by hostname
- ssh, scp, vnc, etc by IP addess

Additionally, the SERVFAIL reply from is expected since my dnsmasq server is on the secondary server.

Note that the only machine that can both ping and ssh/scp/etc by hostname is nibbler, which also happens to be the only one of the three running RHEL5.3 instead of FC13. Other virtual and physical machines running on the and networks (all running RHEL5.3) work just like nibbler does. So the problem seems to only affect machines running FC13.

Final note: selinux is disabled, iptables is disabled, ip6tables is disabled.

Other than that, discovery is a brand-spanking-new install straight off of the FC13 DVD. atlantis has been around longer, but its just a file server so I haven't done anything too crazy to it.

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OpenSUSE Install :: Set $HOSTNAME To Dynamically Update With The Hostname That Is Specified For The Ip In DNS?

Apr 6, 2010

How do I set $HOSTNAME to dynamically update with the hostname that is specified for the ip in DNS?

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Ubuntu Networking :: Pinging Hostname Rather Than Hostname.local?

May 24, 2010

I'm trying to ping another Ubuntu computer on my local network. If I try doing,ping <hostname>then I get the messageping: unknown host <hostname>however, if I doping <hostname>.localthen I get a response back. I was wondering how I can change it so that I can ping without having to append .localI've installed winbind and modified my /etc/nsswitch.conf file but this has made no difference.

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Ubuntu Networking :: Hostname Changed But Email Still Using Old Hostname?

May 22, 2011

I have an ubuntu 10.04 server with hostname "". However, due to migration, we had to change to hostname to something else, "xyz".

I have done changing /etc/hosts and /etc/hostname and run /etc/init.d/hostname start.

Checking the hostname and all shows it is now using hostsname of xyz. However, email sending out is still using old hostname. We have some scripts that will send out alerts like failed rsync or hdd space full to my email account. But I see the sender is still "".

How do change that to xyz? I am using postfix. I have edited and restarted postfix but no go.

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Debian Configuration :: Ssh: Could Not Resolve Hostname

Apr 18, 2011

So I recently upgraded from Debian 5 to Debian 6 and now for some reason I cant SSH into my server FROM my server. All of the following fail with the same error:


They all come back with: ssh: Could not resolve hostname Name or service not known. I never actually tried this before upgrading so I'm not sure if its caused by the upgrade, but I would like to get this fixed. Also, ping with all of the above hostnames fails as well. I can SSH in from other computers and I can SSH out from the server. For whatever reason, I cant SSH from the server to the server though.

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Debian :: Check The Validity Of The Specified Hostname?

Apr 21, 2010

But, given that I've mixed some source and unstable packages in with my stable system, I'm now experiencing a few eccentricities (which really should make me swear off screwing around with my system, but, alas, I don't seem to learn from experience).

I digress. Anyway, in trying to play cdroms (with xplaycd and with kaffeine), it does not work. Kaffeine gives me the following feedback:

The host you're trying to connect is unknown.

Check the validity of the specified hostname. (unable to resolve)

PS, I am a member of both audio and cdrom.

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Debian :: Computer Not Sharing Hostname?

May 6, 2011

My server's hostname is 'cookhome'. I am wanting it to broadcast over my network so I can just use that name instead of the IP address, but it isnt working. I am unable to ping it from any other computer./etc/hosts

Code: localhost cookhome


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Networking :: Ping Debian On Hostname

Mar 31, 2010

How I can ping my debian computers on their hostname?

I have installed both samba and winbind and I have also changed the line in /etc/nsswitch.conf to:

Hosts: files wins dns

I have done the same thing on another linux box (ubuntu) just to see if that worked and it did - I could ping it on the hostname.

Also, I have trid to add the ip/hostname in /etc/hosts and even that didn't work.

The /etc/resolv.conf seems to be as it should.

In the /etc/hostname the hostname is updated.

I have tried to restart the samba service and the networking service and even the entire computer but none of it worked.

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General :: Difference Between $HOSTNAME And $(hostname)

Jan 21, 2010

the difference between $HOSTNAME and $(hostname)?

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Debian :: Access System From Windows Box Using The Hostname?

Apr 20, 2010

On my Linux boxes, I can access another machine using hostname.local as the address. How can I do something similar from Windows (XP)?

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Debian Installation :: Preseed Hostname Reconfiguration

Aug 25, 2014

I'm trying to create preseed configuration for debian. Currently I'm working with Debian version: 7 (wheezy), Installer build: 20130613+deb7u2+b1.

What I want to achieve is to have different network configuration than during installation.

I have two preseed files, one in intrd and the second that is fetched through http (url argument to kernel)

In the initrd file there are settings required to get dhcp network settings that will be used during installation:

Code: Select alld-i netcfg/choose_interface select auto
d-i netcfg/get_hostname string unassigned-hostname
d-i netcfg/get_domain string unassigned-domain

Then in the preseed file that is downloaded from network i have this:

Code: Select alld-i netcfg/choose_interface select auto
d-i netcfg/disable_autoconfig boolean true

d-i netcfg/get_ipaddress string
d-i netcfg/get_netmask string

[Code] ....

IP address settings work as expected, at the end of the installation netcfg runs again and when installed system boots it has static address set (.199). However hostname stays the same, it is not reconfigured.

I have tried many different combinations like removing get_hostname and get_domain options form initrd preseed and appending 'priority=critical' to kernel boot arguments but no matter what I do it always fails.

Is there any way to do this? I know that hostname can be set by hostname= krenel boot arg or by using dhcp option but I'd like to avoid this.

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Debian Configuration :: Load A Webpage Gives A Cannot Resolve Hostname Error

Jun 11, 2010

Any attempt to load a webpage gives a Cannot Resolve Hostname error. i can ping [URL], but cannot load the page. However, the page will load by typing its IP address [URL] I have been trying to figure this out for days. cat /etc/resolv.conf nameserver

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