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From: Schlomo Schapiro (schlomo.schapiro_at_mikado.de)
Date: Wed 25 Feb 2004 - 13:42:15 GMT

Hi all,

I just installed VServer on my SuSE9.0 box and compiled a new 2.4.25
kernel with the OpenWall patches included.

The vserver kernel subsystems seems to be there (checked with e.g. vps -ax)

I then downloaded the debian vserver to start testing and it won't start
with this message:

 # vserver debian start
Starting the virtual server debian
Server debian is not running
ipv4root is now
Host name is now gss34.mikado.local
Domain name is now
New security context is 49175
Can't chroot to directory . (Operation not permitted)

I started to play around with the chcontext tool and got a very strange
thing: The CAP_SYS_CHROOT capability is not present !:

# /usr/sbin/chcontext --ctx 49176 bash -c 'getpcaps $$'
New security context is 49176
Capabilities for `4337': =

When I do not give the --ctx parameter, all capabilities are present:
# /usr/sbin/chcontext bash -c 'getpcaps $$'
New security context is 49176
Capabilities for `4334': =ep cap_setpcap-ep

That seems to be the reason why the vserver start command does not work.

Do you have any ideas what yould be the problem ?

Some more questions:
* What about virtualized localhosts ? How can I give each vserver a
private localhost( ?
* I am running samba in a chbind environment, however nmbd complains
about not beeing able to bind to the IPs of the other vservers and
doesn't start when I have any IP aliases defined. The error log looks
like this:
[2004/02/25 12:51:03, 0] nmbd/nmbd.c:main(795)
  Netbios nameserver version 2.2.8a-SuSE started.
  Copyright Andrew Tridgell and the Samba Team 1994-2002
[2004/02/25 12:51:03, 1] lib/debug.c:debug_message(258)
  INFO: Debug class all level = 1 (pid 3587 from pid 3587)
[2004/02/25 12:51:03, 0] lib/util_sock.c:open_socket_in(804)
  bind failed on port 137 socket_addr =
  Error = Cannot assign requested address
[2004/02/25 12:51:03, 0] nmbd/nmbd_subnetdb.c:make_subnet(139)
  Failed to open nmb socket on interface for port 137. Error
was Cann
ot assign requested address
[2004/02/25 12:51:03, 0] nmbd/nmbd.c:main(873)
  ERROR: Failed when creating subnet lists. Exiting.
------------------------------------------------------------------------------------ is the IP alias added by the debian vserver I tried to run. I
thought that chbind was supposed to prevent vservers from seeing other
IPs ? Is there a solution to this nmb problem ?

Thanks a lot for any help,
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