node name or service name not known

ace410 · 11-20-2009, 02:03 PM

i'm trying to ssh to a remote host using dns name instead of ip address - i don't know what the ip address is but i do have the dns name - i ssh all the time successfully using username@ip address - does this mean ssh is set up to only connect by ip address and there's nothing i can do about it or is there some way to configure ssh to enable using the dns name?

EricTRA · 11-20-2009, 02:13 PM

Hello,

Are you sure that the domain name gets resolved correctly? If you do

Code:

ping domainname

do you get an answer? Is this inside your own LAN or through internet?

Kind regards,

Eric

ace410 · 11-20-2009, 02:30 PM

i'm unable to ping the host get unknown host

EricTRA · 11-20-2009, 02:41 PM

And is this server in your LAN or outside of it? Are you connecting over the internet?

Kind regards,

Eric

ace410 · 11-20-2009, 02:45 PM

not connecting over the internet this is a server inside our network

EricTRA · 11-20-2009, 02:49 PM

And are you able to ping to other servers in your network, that is by using their hostname? It looks to me that the server you are trying to connect to is not being resolved correctly. Do you have another workstation or server from where you can try to ping in order to find the IP address of that particular server?

Kind regards,

Eric

ace410 · 11-20-2009, 02:55 PM

i cannot ping other servers on the network either but i can ping other servers if i ping using the ip address - for example i try to ping srvlinux on our network: $ ping 17.36.24.36 i get a 17.36.24.36 is alive reply but $ ping srvlinux.domain i get unknown host

EricTRA · 11-20-2009, 02:58 PM

Ok, this look like you just need to get your DNS server set in order to query by hostname. Do you know what the IP address of the DNS server in your network is? And what distro are you using?

Can you post the output of:

Code:

ifconfig -a

assuming you are ssh-ing from a Linux computer.

Kind regards,

Eric