[FreeNX-kNX] NXServer inside of VServer?

[Martin Honermeyer]

(I am cross posting this to the linux-vserver list, as it is of interest to
those people, too.)


Hello Pablo,

many thanks!! I got it working!!! This is what I did:

* Deleted everything from /tmp.
* Tried to login again => same problem, window closes after a few seconds
* looked at the user's .xsession-errors file:
_IceTransmkdir: ERROR: Owner of /tmp/.ICE-unix must be set to root
_IceTransSocketUNIXCreateListener: mkdir(/tmp/.ICE-unix) failed, errno = 1
_IceTransMakeAllCOTSServerListeners: failed to create listener for local

* So I looked into /tmp. The directory .ICE-unix was already there, the
owner set to my user. 
* So I did: 
$ chown root /tmp/.ICE-unix
$ chown root /tmp/.X11-unix

* Login => works and runs like a shot!!! :-)
 

Note: I have to re-run those two commands every time I reboot the VServer.
It seems like starting an X-Server from within FreeNX doesn't set up those
permissions in /tmp correctly. Maybe that's because I don't have something
like KDM run beforehand.


VServer configuration: I didn't have to enable any additional capabilities!



Nice greetings,
Martin


Pablo A. Salgado wrote:

> Some time ago I tried to do the same and ran into troubles.
> 
> First, I found no way to start xterm as normal user into vserver because
> some kind of problem with /dev/tty* into the vserver (the message was
> something like: "I couldn't create tty#"). The only user that could start
> xterm was root. That means that it seems to be posible to execute KDE as
> normal user but not xterm. Anyway I didn't find any documentation about
> this topic.
> 
> Then, I installed freenx in the host system and run into the problem you
> describe starting KDE as normal user. After few attempts to start sessions
> I decided to erase any related KDE file in the /tmp directory and voilà!
> it worked. Perhaps it could help you.
> 
> Let me know if you success running NXserver into vserver :)
> 
> On 6/30/05, Martin Honermeyer <maze at strahlungsfrei.de> wrote:
>> 
>> Hello,
>> 
>> I am trying to get an NXServer running inside a Linux VServer
>> (www.linux-vserver.org <http://www.linux-vserver.org>). It works as far
>> as this: KDE is starting, then the
>> splash screen says "initializing system devices" and pow! the session
>> just closes. It seems not to happen exactly at this point, but after the
>> session
>> is running for a few seconds. No errors in the nxserver log, no .xsession
>> file in the user home (it should be there??).
>> 
>> As the capabilities inside the VServer are very restricted, I need some
>> advice from the NX devs about which system capabilities are needed in
>> order
>> to get an NXserver running. A list is at
>> 
>>
http://savannah.nongnu.org/cgi-bin/viewcvs/util-vserver/util-vserver/lib/bcaps-v13.c?rev=HEAD.
>> 
>> 
>> I am using the newest FreeNX 0.4.1 and the free NXServer components 1.5.0
>> r3. The problem was the same with FreeNX 0.2.8 and NXServer components
>> 1.4.0.
>> 
>> If there are direct suggestions for a solution, at least I'd like to know
>> how to get some more verbose log output! NX_LOG_LEVEL=7 doesn't tell
>> much:
>> 
>> ...
>> NX> 1000 NXNODE - Version 1.4.0-04-CVS OS (GPL)
>> NX> 700 Session id: nx32-1004-A2499FCF6F24DE826CBD8940338E63D3
>> NX> 705 Session display: 1004
>> NX> 703 Session type: unix-kde
>> NX> 701 Proxy cookie: a9588103ea86b8550176359e4255a222
>> NX> 702 Proxy IP: 210.95.48.249 <http://210.95.48.249>
>> NX> 706 Agent cookie: bd1745d567d62cf63fbdbbaee2ecdcb5
>> NX> 704 Session cache: unix-kde
>> NX> 707 SSL tunneling: 0
>> NX> 710 Session status: running
>> NX> 1002 Commit
>> NX> 1006 Session status: running
>> NX> 105 bye
>> Bye
>> NX> 999 Bye
>> NX> 1001 Bye.
>> NX> 105 quit
>> NX> 1009 Session status: terminating
>> NX> 1006 Session status: closed
>> 
>> 
>> (Btw, SSL encryption doesn't work at all. The client times out at
>> "Negotiating link parameters".
>> 
>> 
>> Thanks for any help. It would be REALLY great to have this running!
>> 
>> 
>> Greetz,
>> Martin
>> 
>> 
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