Multiple Xvnc at boot time?

[Marcos Assis Silva]

On Sun, 29 Nov 1998, John Lin wrote:
|o| I am running RedHat 5.2.  How can I start many vncserver at the boot
|o| time for many users.  It seems that the user has to login and then run
|o| vncserver.  Is there any way I can start vncserver for multiple users in
|o| /etc/rc.local?
|o| 

        I've  done it  in  a SUN / Solaris box  via xdm  (dtlogin, CDE
equivalent  of  xdm, as a matter of fact). /etc/inittab spawns as many
vncservers as  I  wish,  all of  them querying localhost  (XDMCP), and
there's a boot script that  launches a  dtlogin  / xdm  instance  that
provides login / X sesssion  services for those VNC virtual X terms. I
suggest "man xdm" for details ...

        Of  course,  there are security concerns here ... specially if
you take into account that anynone (vncviewer) can connect to a server
if the "visitor" knows the password to be granted access. I don't have
that  many users who would like to use VNC features. So, I run one VNC
server instance for each of those users. Each instance uses a password
file stored into  the home dir of the user the instance is intended to
serve. An entry to start a VNC server   instance in /etc/inittab would
look like

	d1:234:respawn:/usr/local/vnc/Xvnc :1 -geometry 1024x768 \
        -rfbauth /home/USER/.vnc/passwd -rfbport 5901 -query localhost 
        -once -rfbwait 120000 -desktop 'USER Setup' > \
        /usr/local/vnc/run/Xvnc:1 2>&1

        This setup also has the advantage of letting one customize the
X  resources (e.g.  geometry)  used in  a VNC server instance, meeting
user preferences without messing with others ones.

        The  drawback of  having memory allocated for all of those VNC
servers  ruuning  is lessened by *nix "unused" memory swapping. No big
concerns from my point of view ...

        Ok, it's a  limitted  aproach, but  apart from this scenario I
can't see others where it would be feasible to help users from logging
in and manually running a vncserver instance.

	HTH. Regards ...

                                                           ...
        .               .               .                -(o o)-
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UNIVERSIDADE ESTADUAL DE LONDRINA - UEL   .:.    assis @ npd.uel.br
Nucleo de Processamento de Dados  - NPD   <*>    Marcos Assis Silva
     Gerencia de Software Basico  - GSB   ":"   Analista  de Suporte
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