Fedora Networking :: Hostname Cannot Be Resolved
Feb 1, 2010
Running Fedora 11.
Did get a Kimsufi dedicated server through [URL] When I did get it the hostname resolve does not work.
I have never got any of this problems before so this is my first time playing with the network settings.
Nothing works! Lynx, wget, yum and so on. IT works if I do enter the hostname by its IP. But thats not working in the long way
Quote:
ping cnn.com
ping: unknown host cnn.com
Quote:
#nslookup cnn.com
Server: 127.0.0.1
Address: 127.0.0.1#53
[Code].....
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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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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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Aug 31, 2009
I have configured bind to create a domain.I see thet domain getting resolved for sometime and then it does not
you can see in the second nslookup name resolution fails
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Nov 13, 2010
When I use Ubuntu, my DSL modem correctly gets the hostname I call my computer "mertensia", but I'm having issues with Fedora. Yet, when I look at the name assigned by the modem (using URL... in a web browser),I need the PC Name to be mertensia, because otherwise it will complicate how I ssh immensely.
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Jul 3, 2011
I have 4 installations of Fedora 14 running on a Win 2008 R2 server in Hyper-V.
When I try to ping my desktop or the host server via the hostname from within any of the Fedora installations, the ping fails. I can ping by IP without issue. Also if I try to ping the VMs from my desktop it fails. I have an XP VM setup that I can ping without issue via hostname and IP.
All of the VMs can access the Internet without issue. I have disabled all firewalls on all systems with no luck. My desktop can ping the Hyper-V server without issue so it would appear that the problem lies with the Fedora installations.
My resolv.conf
Code:
Does anyone have anything I can try to get the name resolution working?
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Sep 1, 2010
I'm running a fresh install of Ubuntu 10.4.1 on a Dell Dimension 4700 desktop.When connected to the network (jack in wall, no router), I normally navigate my intranet and the internet.But here's the issue: this particular Dell machine has an IP addresses that is radically different from all other machines connected to the same network.I have tried to edit etc/network/interfaces to force a different IP, but then I lose connectivity. I need this to follow the IP scheme of my intranet so I can set up a server that resolves by hostname. Is there anything wrong with the NIC or is this something that can be resolved via command line?
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Mar 8, 2009
So everything seams to be fine on my F10 boxes networking. I can ping computers on the network with both LAN IP addresses, and their hostnames. However, I can only access my F10 box with a LAN IP. In windows, I go to view workgroup computers... only the windows systems. If I go to the F10 system with samba via the IP address it works fine, just can't get to it with a hostname.
I'm wanting a static IP of 192.168.1.22. And on the windows workgroup "workgroup".
I'm new to doing things with linux that are remotely difficult... and well, this has proven to be. I can't work out if this is a SMB problem, general networking...
smb.conf (I've ommited the top info segment due to forum character limit, as well as the SELINUX notes)
Code:
#======================= Global Settings =====================================
[global]
# ----------------------- Netwrok Related Options -------------------------
#
[Code].....
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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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Sep 5, 2011
I got a diferent domain. I got a modem-router (192.168.1.254 ) thats connect my computer with apache (192.168.1.68) I got dinamic dns with inadyn to update the ip adress for my domains. My question how to edit the hostname file (/etc/hosts)?
[Code].....
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Feb 13, 2009
After installation, I changed the hostname of my computer, using system-config-network. However, after every reboot, it no longer wants to automatically connect to the network. The only way I could fix this was to remove NetworkManager-gnome and install knetworkmanager and use it to create a new connection. There was a flag there to autoconnect.
The other problem is that the hostname never shows on my network. My other PCs all have visible hostnames. One is an Ubuntu box and the other Windows XP. These machines can be pinged by hostname. The Fedora box can only be reached from the other PCs by specifying the numeric IP address.
I've checked the usual places and the hostname is correctly specified. Entering the 'hostname' command returns the correct hostname on the Fedora box. I am running Fedora 10.
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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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Nov 3, 2009
I have a problem.ADSL modems not see my hostname.My hostname is "unknown"
Code:
Code:
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Nov 25, 2010
I am able to ping my hostname of sinbad only from the linux system itself. On all my windows boxes, I am not able to ping it. I can only ping the IP address.
[code]...
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Aug 16, 2011
The details of "how to access externally with hostname instead of IPAddress in fedora"
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Nov 24, 2010
I did a new install of Fedora 14. This is my first time using Linux seriously and I am trying to figure it all out.
I am able to ping my hostname of sinbad only from the linux system itself. On all my windows boxes, I am not able to ping it. I can only ping the IP address.
Here is /etc/hosts:
Quote:
I disabled the firewall, disabled SELinux, and still not able to ping it.
Here is the info from ifcfg-eth0 :
Quote:
Quote:
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Dec 12, 2010
Running 2.6.29-gentoo-r1 on a Sun Ultrasparc 10 with a Sun Happy Meal on eth0 connected directly to my cable modem. Intermittently, with a frequency between a few hours and a few days, I lose internet connectivity. Running ifconfig eth0 indicates all is well and I have a valid IP address but I cannot even ping the cable modem's management address; pings to 127.0.0.1 and eth0's IP address do get a reply but no other address I've tried does. I can 'fix' the problem by issuing
Code:
If I check the CM logs, it appears that it has rebooted itself prior to the loss of connectivity. The strange thing is that the incoming traffic doesn't seem to be affected by this, my PSAD log is full of incoming scans even during the periods when I can't connect to the net. I suspect this is an ISP problem (they own the CM);
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Oct 31, 2010
Cannot connect to internet via Firefox or Midori on my Dell Inspiron 8200 laptop with a Netgear wireless card. However, I can update via yum, I can ping google from the CLI, I can ssh to my desktop, I can point a browser to find my router which /etc/resolv.conf points to, but can't get a browser to resolve hostname. I'm posting from a different machine (desktop), here is my /etc/resolv.conf:
[Code]....
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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 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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Dec 11, 2010
wonder if anyone might have a clue with this. i installed filezilla because i wanted a nice ftp client, but when i tried connecting to the server with filezilla, i get this:
Quote:Connection attempt failed with "EAI_NONAME - Neither nodename nor servname provided, or not known".
yet when i googled that, i mostly found hints that said "your hostname's invalid" or "check the spelling of your hostname". well, those aren't it. i can login to this ftp server successfully through both firefox and by using a gigolo-gvfs-thunar combo.i even uploaded a file with the thunar route. and nslookup is able to see it. so what's with filezilla? by the way, this ftp account of mine is very old....i've had it for probably 10 years, and haven't logged in for 5. i'm surprised it still works.
also, why am i trying to work with filezilla when i have gigolo-gvfs-thunar? because thunar locks up and becomes completely unresponsive for a couple of minutes whenever i try to do any ftp'ing with it, even though it works. if i even so much as click on a file in my ftp directory, i have to wait two minutes before the window comes back and highlights the file i clicked.
UPDATE: just tried connecting via ftp in the command line, and no luck. so apparently it's not just filezilla. maybe i just can't ftp directly to that host anymore? but if so, then why are firefox and gigolo able to connect? networking is not one of my strong points, so this is confusing to me.
update again whaddya know, maybe i'm slowly starting to get some brains when it comes to networking. though i won't say i "figured it out"....but i did make it work. i just used the ip address nslookup reported and was able to ftp to it with both filezilla and the ftp command line. i forgot to mention that i'm behind a firewall (my router), and i guess the hostname is not in the router's DNS, if my tiny understanding of routers is correct. but connecting to the ip address directly is apparently not a problem.
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Jan 21, 2010
the difference between $HOSTNAME and $(hostname)?
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Mar 2, 2010
how to allow a specific hostname with specific ports in iptables?
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Jul 16, 2010
I have a Fedora 13 desktop I have at work that I want to use to back up data off my laptop, also running Fedora 13. I can ping the hostname of the laptop from the desktop, but not the other way round. I don't think I did anything to have the laptop register its hostname with the DNS server. Since my company uses DHCP, I can't just edit the hosts file on the laptop. I want to be able to use the hostname when I mount the NFS shares for the backup. I also want to run the desktop headless so Remote Desktop needs to be able to find it. Is there a way to force the registration? If I ping the laptop's fully qualified hostname from itself, I get back the correct IP address. If I do the same thing on the desktop, it tells me it can't find its own hostname. I do have the domain name configured in the dns search path under System->Administration-Network
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Jul 19, 2010
I just finished installing ubuntu server 9.10 - fairly new. I couldn't run SSH when I use IP address of the server. I've also setup DynDNS that returns responses when I ping. SSH works fine when I use the hostname of my server (leopard) but SSH doesn't work when I use IP.I was expecting IP for "eth0" something starting with 192.168.x.x as are my other computers running WIN on the same network.Any ideas why
1) Why am I not able to run SSH from IP assigned to server by DHCP. It works when I use machine hostname (leopard)
2) Why SSH isn't working from DynDNS web hostname when it responses back the ping command.
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Oct 6, 2010
ok so when i sudo apt-get update i get a bunch of crap that says no address associated with hostname
ive googled this and changed my /etc/hosts to all sorts of things and no luck apache wont even work now either. this server is for a few websites the company i work for hosts. currently i swaped it over to another windows based comp but we want it on ubuntu.
ive heard this is dns related? and that a FQDN is needed? if so im not sure how to re write my /hosts file but as of not it looks like this:
Code:
127.0.0.1localhost
63.119.120.135speed
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
[Code].....
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Mar 22, 2011
I have set up an Ubuntu 10.10 server with SAMBA shares and Apache web server. Everything was working fine. Then there was a power failure and after I restarted the server the XP pc's can see the server using the hostname. They can only see it using the ip adress. I haven't change anything on server or client side. Just the restart of the server.
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Mar 14, 2010
I am coming across a strange error with my gateway. When I do a "ping", this is what I get below:k-63a5b848c6cb4:~ # ping simba PING simba.gateway.2wire.net (192.168.1.69) 56(84) bytes of data.
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=1 ttl=64 time=0.041 ms
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=2 ttl=64 time=0.029 ms
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=3 ttl=64 time=0.023 ms
[code]....
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