Newbie server Question
Collins, Kevin (MindWorks) [Contractor]
KCollins "at" chevrontexaco.com
Wed Mar 30 16:50:00 2005
Ok - I have been thinking about setting up "on demand" VNC for a while
and yesterday I started working on it after replying to your email. So
far I do not have it working all the way - I am seeing a black screen
with a big X and never get to the XDMCP login screen.
However, I did make past where you are, but I also used a couple of
different online docs. In my case, when restarting xinetd I see this
message in /var/log/messages:
Mar 29 15:03:21 cpafisxw xinetd: bind failed (Address already in
use (errno = 98)). service = vnc-640x480x8
Which in my case is port 5950...
Try restarting/reloading xinetd and see if you have a similar message
for 5951. I have tried using lsof to identify what is using that port
and found nothing, but each time I restart xinetd I see the same error.
If anyone has tips for resolving the "black screen with X" problem, I'm
all ears. I did not need to change any GDM settings because the machine
in question already supports XDMCP logins from any server.
From: Stephen Hinton [mailto:stephenhinton "at" gmail.com]
Sent: Tuesday, March 29, 2005 9:25 PM
To: Collins, Kevin (MindWorks) [Contractor]
Cc: vnc-list "at" realvnc.com
Subject: Re: Newbie server Question
chkconfig --list showed vncservers as 'on'
iptables -L showed
ACCEPT tcp -- anywhere anywhere state new tcp dpt:vnc-norm
which is the name i gave to the port in /etc/services
I did check that the name in services and the vncservers file match
However, i still do not see a listening port for 5951 when i do a
On Tue, 29 Mar 2005 08:12:15 -0800, Collins, Kevin (MindWorks)
[Contractor] <KCollins "at" chevrontexaco.com> wrote:
> There is no direct relationship between /etc/services and what
> are running (or listening). Try running:
> # chkconfig --list
> The last bit of info will show all the services xinetd is controlling
> and the status of each. Also, do you have any firewall configured? Try
> # ipchains -L
> # iptables -L
> And post the results.
> Also, make sure the names you specified in /etc/services exactly match
> the names you specified on each "service" line in
> /etc/xinetd.d/vncservers (according to the doc).
> I have not run VNC this way, but these things might help you pinpoint
> error in configuration.
> -----Original Message-----
> From: vnc-list-admin "at" realvnc.com [mailto:vnc-list-admin "at" realvnc.com]
> Behalf Of Stephen Hinton
> Sent: Monday, March 28, 2005 8:39 PM
> To: vnc-list "at" realvnc.com
> Subject: Newbie server Question
> I am trying to get VNC to run as an on-demand service because I
> would ultimately like to remove the monitor and keyboard from my
> server and administer it remotely in entirety. However, I'm not savvy
> enough yet to be confident I can do that without my GUI crutches. I
> am running into a very simple problem that is probably more linux
> related than VNC related, but I still need help. I'm running Fedora.
> I can get VNC operational on a 'per-user' basis using the nice GUI
> 'desktop sharing' interfaces. However, I cannot find any GUI setup
> that will allow VNC to run 'on-demand' to provide a remote login
> screen, etc. So I found and followed the very nice, very explicit
> "VNC on UNIX-like systems - step by step guide." that are found
> reproduced on several websites
> ). However, I cannot for the life of me get Xvnc to 'listen' on a
> port. Which obviously prevents anything else from working as far as
> vnc goes. I have created the entries in /etc/services, I have created
> the corresponding vncservers file in /etc/xinetd.d/ . I have enabled
> XDMCP (which should be beside the point). I restarted xinetd. When I
> do a 'netstat -tl' i do NOT see any service listening on my 595x
> ports. It should be listed as listening even if no one is connected
> right? In fact, I would think it would be listening just from the
> entry in the /etc/services file even if I screwed up the server
> settings in xinetd. But then again I am a noob. So someone tell me
> what obvious mistake I am making here.
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