Xen users - Feb 2008 - Getting hostname of DomainU from domain0

Hi,

I am a newbee to Xen.. was trying out something on RHEL5.1. I am hosting a 
VM that is RHEL4 on the dom0. Was looking for how to get the hostname of 
the domainU from dom0?

Thanks for your help
-N


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Could you mount root file system of the guest domain ? If yes then you could
mount and can see the /et/hosts file to know the host name, but it should be
there.

Else if you know the ip address of the domain, then could ssh and see the
hostname  by running hostname command on domU via ssh.

Else you have to see the console of domU and see the ip and hostname via
console of domU.

Thanks
Trilok

On Feb 8, 2008 5:23 PM, Nalini Vidapankal <nvidapan@in.ibm.com> wrote:
>
> Hi,
>
> I am a newbee to Xen.. was trying out something on RHEL5.1. I am hosting a
> VM that is RHEL4 on the dom0. Was looking for how to get the hostname of
the
> domainU from dom0?
>
> Thanks for your help
> -N
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>

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Nalini Vidapankal wrote:
>
> Hi,
>
> I am a newbee to Xen.. was trying out something on RHEL5.1. I am 
> hosting a VM that is RHEL4 on the dom0. Was looking for how to get the 
> hostname of the domainU from dom0?
>
> Thanks for your help
> -N
Besides running an "xm console" and logging into it? You can use the
"xm
list" verbose options to get the MAC address, and poke your local 
network to see what IP address and potentially what hostname are 
associated with it.

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trilok nuwal wrote:
>
>
> Could you mount root file system of the guest domain ? If yes then you 
> could mount and can see the /et/hosts file to know the host name, but 
> it should be there.
>
> Else if you know the ip address of the domain, then could ssh and see 
> the hostname  by running hostname command on domU via ssh.
>
> Else you have to see the console of domU and see the ip and hostname 
> via console of domU.
>
> Thanks
> Trilok
No, you can''t. You will only see what the installer assigned there, if 
anything. The hostname is usually actually set in a configuration file 
read at boot time, /etc/sysconfig/network on RHEL and Fedora and many 
other Linuxes, or /etc/hostname on old BSD releases, etc., etc., etc. 
And for some setups, it is assigned by a DNS lookup from DHCP 
configurations at boot-time, and it can even be set in a dynamic DNS 
setup in /etc/dhclient-eth0

/etc/hosts is where a hostname may be *RECORDED* by many installers, but 
it''s not where it is set. I''ve previously spent a long time
divorcing
people from publishing all their internal DNS information via 
/etc/hosts, which is very fragile and can be overridden by local dynamic 
DNS setups common to Active Directory environments.

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Nalini Vidapankal wrote:
>
> Hi,
>
> I am a newbee to Xen.. was trying out something on RHEL5.1. I am 
> hosting a VM that is RHEL4 on the dom0. Was looking for how to get the 
> hostname of the domainU from dom0?
There is no way to get it from Dom0. You should log in to guest and 
check the output of "hostname" command to get the actual hostname set 
for the guest or use "host <ip address>" if you know the ip
address to
return the hostname of the guest in DNS.

--Sadique
>
> Thanks for your help
> -N
> ------------------------------------------------------------------------
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users

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