General :: Can't Contact Machine By Its Hostname
May 3, 2011
I just upgraded to Ubuntu 11.0.4 (from 10). In my /etc/hostname file, I defined my machine's name, "my-machine". From the server, I'm able to SSH to myself,
ssh dave@my-machine
However, from another machine in the same network, I'm not able to SSH
Code:
davea-mbp2:systems davea$ ssh dave@my-machine
ssh: Could not resolve hostname my-machine: nodename nor servname provided, or not known
However, I'm able to SSH in using the machine's IP address. how I get my machine name recognized on the network?
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Nov 25, 2010
I have assigned static IP to my machine but, somehow, NIS entries are getting chenged due to /sbin/dhclient-script
[Code]...
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Mar 26, 2011
I admit I am a little green with the "Bourne Again Shell" (Bash), even though I was always not as proficient with the Bourne or Korn shell as with C Shell. From recent research the public sway is to Bash over tcsh. I can see I have been away from Linux/UNIX way to long. Running a network of workstations (upto 6) and servers (2) running RH Enterprise Linux 5.4 plus in the same network is an old DEC Alpha running Tru64 UNIX (don't know which version): I looking for a method to get the hostname I am logged in on to use in a Bash (or if necessary sh) script. This is to be added to an auto_start shell script start up our application on Linux workstation and servers.
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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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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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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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Oct 23, 2009
At school can connect to my computer via SMB/Samba and VNC from the Windows Machines, but not by hostname (I still cannot VNC in at home on my desktop computer and have yet to try Samba there because I wanna setup Samba there from the comfort of my laptop and therefore need VNC first). How come I cannot access this machine by it's hostname?
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Jan 21, 2010
the difference between $HOSTNAME and $(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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Feb 3, 2010
It was always why did You switch from there or that. I wonder are there (or better yet here actually) Linux users, that where never 'tainted' with the proprietary infamous operating system? I mean those who never *switched*, but had either both or saw Linux first (before MS Windows).
How do they perceive Linux? We , the ones coming from <put whatever You come from here> , are inevitably biased, carry a background noise and a "whistle" fading in our ears. I know computers from the days they came without operating system (just mere interpreters upon a BIOS stack) and really do appreciate the ways of *NIX. But I see my kids growing and exploring all kinds of "solutions" and OS-es and they have mixed feelings:
1. They are not bothered if software "looks" alike if it is functional
2. They like certain features on either sides and miss where they lack
3. They, above all, appreciate functionality
4. They miss gaming support on Linux a lot (big names hesitating)
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Jul 2, 2010
remove the thread after some one tells me.
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Jan 14, 2011
I am looking to get an android phone, and was hoping there is an easy way to export my contact list from my jailbroken Iphone to my Eee PC.
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Jun 19, 2010
After installing Slackware 13.1, I find that I am getting the message:scripts should use an informative user-agent string with contact informationwhen I access certain websites. Wiki pages, for example. This happens only with Konqueror. Any ideas as to what I might change to gain access to content,
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Nov 30, 2010
How do you transfer files on a Linux machine with ftp,sftp and scp disabled onto a remote machine
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Jul 29, 2009
I successfully installed the virtual box on my fedora 8 system, and also created a virtual machine with windows xp OS, it works nicely, I try to configure the serial port of my virtual machine and try to configure the path for the port "screen shot are attached" it gives me the error message also the "screen shot are attached" for your review.Is kind of mistake is going on during the path setting, and how to set the path for configuring the serial port of my virtual machine so that I can use the hyper terminal tool of windows.
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Jul 14, 2011
I have some file tools on a mint machine that I would rather not install on my mac laptop. Mainly because of the vastness of apt-get and the low risk of installation failure. Anyway, every so often I have a file that I want to process in place using some remote tool. Both machines can ssh right in to each other so I was figuring there must be some script or tool out there that would allow me to type out something like remote [file] [tool & args] to send my file to the other machine, get it processed, then get it back.
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Aug 13, 2010
I'm know very little about Linux but decided to set up a machine running Drupal CMS on a Debian machine and it won't go. The folks at Drupal have tried to help but it seems the Debian OS won't do it's PHP thing for Drupal.
That means i'll have to start at the START I guess.
how to become a master of Linux if one is starting from ABC (I can add and subtract, that's what it feels like)
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Aug 3, 2010
I'm the Administrating the computers in my office. I want to monitor the user's activity. How can i remote login without distrubing the user's activity on his computer? Any software need to be installed? (I don't want to use Terminal server client).
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Jul 7, 2010
I'm using Ubuntu 10.04 LTS
By typing the command:
hostname --fqdn
I get the following
hostname: Name or service not known
As requested by Raphaël Hertzog
# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc-reference' and `info' packages installed, try:
# `info libc "Name Service Switch"' for information about this file.
[Code].....
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Apr 12, 2010
I have some problem some one changed hostname on my system. If I do following I see
Code:
knoppix:~# cat /etc/hostname
debian
knoppix which is coming in left side in above output is not my hostname.
The hostname is debian.
How do I get that name back so that when I do cat /etc/hostname output is like following.
Code:
debian:~# cat /etc/hostname
debian
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Apr 14, 2011
I've installed a new copy of Ubuntu 10.10.Now the big question for me is how do we assign hostname to a given ip? I've given the hostname during the server installation and "cat hosts" says "ebox" hostname I'm trying to put on.Also,I modified the network/interfaces to static and assigned proper values.
#hostname returns ipaddr not the hostname. Also nslookup hostname/ipaddr says server can't find ....
So,is installing dns through bind and setting-up the only way to do that?
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May 21, 2010
I am having problem resolving hostname. i had 1 server and its hostname is resolving fine. i purchased 1 vps and its hostname isnt resolving. for server 1 say hostname is server1.domain.com. and for vps i add server2.domain.com. and when i ping my server2.domain.com i get Host Unknown error. do i add Hostname and make it resolve in VPS. i want to use hostname like server2.domain.com.
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Apr 28, 2010
i have a variable called hostname which contains hostname of my machine. How would i add the hostname to output of other command . For eg. if a output of command is . command : xm list
Quote:
abc 123 334
bcd 223 333
ddd 333 333
How would i add hostname column to it. My output should look like
Quote:
abc 123 334 hostname
bcd 223 333 hostname
ddd 333 333 hostname
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Jan 15, 2010
I am installing ISPconfig on a Ubuntu server 9.10. When i write hostname -f i get the unknown host message.
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Aug 20, 2010
Accidentally i have deleted my /bin/hostname file
i am using redhat centos 5.4 so me how to recover it
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Oct 7, 2010
I have configured one samba server. its working fine. the problem is whe we connect from windows machine , through ipaddress its connected. but i am not able to connect through hostname.
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Jan 28, 2010
I have a version of slackware installed as a virtual machine and am not able to ping hosts or otherwise receive data from any IP addresses external to the LAN. I think this problem is due to the hostname of the vm not being recognized by the gateway (ddwrt); the vm receives an IP via dhcp but the gateway does not seem to recognize its hostname (registers as *).
Will readily respond with whatever conf file is needed.
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