Hello.
I am working in the field of Particle Physics and setting up the
init sequence of a group of diskless single board computers (Emerson
Network Power MVME3100). I have made an initramfs with a statically
linked busybox and a collection of scripts.
I want to automate the init process so that it can run in various
places where both the host and the NFS server can take various
addresses. For the address of the NFS server, I just put a list in a
file in the initramfs. For the host address I perform a DHCP request and
it works well.
There is another thing I would like to do: get the hostname from the
network. Once udhcpc has configured eth0, I know the IP address. Then I
issue an nslookup with this address and I expect to find the hostname in
the response. But it does not work and I have to look into my own
hand-written /etc/hosts to get it. The final OS is Debian Lenny.
I recently compiled busybox-1.15.2 to give a try the nslookup applet
in the running Debian environment. There it works. But not in a chroot
containing the same files as my initramfs.
Here is the response in the Debian system:
k...@apcdc4:~$ /busybox-1.15.2/bin/busybox nslookup apcdc4
Server: 134.158.184.54
Address 1: 134.158.184.54 apcdns01.in2p3.fr
Name: apcdc4
Address 1: 134.158.186.184 apcdc4.in2p3.fr
k...@apcdc4:
And in my chroot /busybox-1.15.2:
# nslookup apcdc4
Server: 134.158.184.54
Address 1: 134.158.184.54
nslookup: can't resolve 'apcdc4'
I have copied the following files in the /etc of the chroot: host
host.conf nsswitch.conf services
The executable is exactly the same in both cases and it is statically
linked. There must be some file missing but which one?
Thanks for your help.
Didier
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