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19990630: Gempak Scripts under Linux

Jim,

The /etc/X1.hosts file is not associated with building
the server. Rather, it is a file you create with the text editor 
to define which machines you will let connect to the virtual
server. This is the equivalent of your "xhost + machine"
command, but this is a lists of allowed hosts loaded at startup.

While we built the Xvfb server on our solaris machine,
it should be part of the standard RedHat installation for
Linux, so I did not expect that Mark would have had to build it. 

If you are getting error messages from Xvfb when you try to 
launch it as root, then it soulds like your path or installation
is not what is expected.

If Xvfb loads sucessfully, then you should see it in the process 
list, and it should read in the X1.hosts file. 

Steve Chiswell
Unidata User Support


>From: "Jim St. John" <address@hidden>
>Organization: .
>Keywords: 199906301906.NAA17468

>This appears to be the problem.  There is no X1.hosts file, but there is a
>host.def file.
>
>The man page for Xvfb contains the following
>
>
>BUILDING
>       To build Xvfb, put the following in your host.def and remake.
>
>       #define BuildServer YES /* if you aren't already building other servers
>*/
>       #define XVirtualFramebufferServer YES
>
>I don't know what Mark did when he installed Xvfb but the hosts.def fiel was
>empty, and I don't know hao to remake Xvfb. It might be best for me to wait
>until Mark gets back.
>
>when I run the Xvfb command I get teh font erro messages and when I run the
>xterm -display localhost:1 command I get the _X11TransSocketINETConnect: Can't
>connect: errno = 111 message.
>
>If Mark can figure this problem out I think we should be in business.
>
>Jim
>
>On Jun 30, 12:30pm, Unidata Support wrote:
>> Subject: 19990630: Gempak Scripts under Linux
>>
>> Jim,
>>
>> The command to run the Xvfb server is something that only needs
>> to be run at startup by root. This establishes a server running
>> as display :1 screen 0 (eg localhost:1.0).
>>
>> When you use the xvfb server, you will no longer send your gempak display to
>> localhost:0 which is your console X server. Instead, send your display
>> to localhost:1.
>>
>> You should verify that your Server is allowing connections from your
>> system using something like: xterm -display localhost:1
>> If you are denied a connection, then you probably haven't
>> configured your /etc/X1.hosts file for what machines will be
>> allowed to connect to the display- this file lists machines
>> 1 per line like:
>> laraine.unidata.ucar.edu
>> sunshine.unidata.ucar.edu
>> zero.unidata.ucar.edu
>>
>> Steve Chiswell
>> Unidta User Support
>
>-- 
>*********************************************************
>* Dr. Jim St. John                                     *
>* Research Scientist                                   *
>* School of Earth and Atmospheric Sciences             *
>* Georgia Institute of Technology                      *
>* Phone:       404-894-1754                            *
>* Fax:         404-894-1106                            *
>* e-mail:      address@hidden                  *
>* Homepage:    http://louisxiv.eas.gatech.edu/~stjohn  *
>*********************************************************
>