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
Old:
/etc/hostname
server1
New:
/etc/hostname
server1.domain.local
Then I executed /etc/init.d/hostname.sh, and get as below, looks OK!
hostname -f
server1.domain.local
hostname
server1.domain.local
hostname -s
server1
The logs are still just showing server1.
Example:
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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Jan 19, 2011
Is there any way to change Hostname in Fedora 14?
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Aug 12, 2010
I have changed my hostname to - ns1.searchdns.net by
1) editing the files /etc/sysconfig/network
2) then run the command - echo "ns1.searchdns.net" > /proc/sys/kernel/hostname
3) then restarted the service /etc/init.d/network restart
I run the command hostname and it returns ns1.searchdns.net. 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
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
192.168.0.20 abc.com
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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Oct 1, 2009
Yesterday, while trying on establishing mobile broadband, my hostname changed, and I can't make it yet. My /etc/hosts is
1 127.0.0.1 pc-194-101.fysik.uu.se localhost.localdomain localhost
2 127.0.0.1 pc-194-101.fysik.uu.se 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
1 NETWORKING=yes
2 HOSTNAME=roddur
What I have to do if I have to change my hostname to "roddur"?
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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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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
Code:
uname -a
it doesn't give the right answer but returns
Code:
host
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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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:
Code:
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
[Code]....
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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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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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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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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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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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:
Code:
00:11:22:33:44:55 host01
00:11:22:33:44:56 host02
script:
Code:
#!/bin/bash
# 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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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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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 sendmail.cf 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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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
192.168.2.4----ralf-FK790AA-ABA-m9---00:22:5F:17:dE:98
In terminal it shows
[dagaz@fedora ~]$ hostname
fedora.linux
[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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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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Dec 14, 2010
I am looking for a way via script to change a systems hostname and IP address!
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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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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 192.168.31.1 and another at 192.168.30.1. I also know that there is another network (let's call it 90.90.90.0) and on that network lies a number of resources. By nature of this configuration, any machine on 90.90.90.0 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 90.90.90.10 that operates as a secondary nameserver, another machine out of my sphere of influence is the primary nameserver (90.90.90.31).
The secondary nameserver on 90.90.90.10 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 192.168.100.200
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 90.90.90.31 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 192.168.31.0 and 192.168.30.0 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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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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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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May 22, 2011
I have an ubuntu 10.04 server with hostname "abc.domain.com". 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 "root@abc.domain.com".
How do change that to xyz? I am using postfix. I have edited main.cf and restarted postfix but no go.
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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:
[URL]
They all come back with: ssh: Could not resolve hostname 127.0.0.1: 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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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:
Code:
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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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:
127.0.0.1 localhost
127.0.1.1 cookhome
[code]....
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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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Jan 21, 2010
the difference between $HOSTNAME and $(hostname)?
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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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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 192.168.56.199
d-i netcfg/get_netmask string 255.255.255.0
[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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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 192.168.1.254
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