Re: [Xen-users] Getting hostname of DomainU from domain0

[Nico Kadel-Garcia <nkadel@xxxxxxxxx>]

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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