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20041104: BGSU - Redbook - GEMPAK

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  • Subject: 20041104: BGSU - Redbook - GEMPAK
  • Date: Fri, 05 Nov 2004 15:31:48 -0700
Patrick,

Your Xvfb server is refusing connections when DISPLAY is unidata.bgsu.edu:1.0,
but will accept localhost connection when DISPLAY is :1.0.

I'm assuming this is a result of your firewall or tcpwrappers where the
qualified hostname forces a connection over the ip iinterface, whereas
the localhostroute is accepted.

As an example:

    [ldm@unidata ~gempak]$ echo $DISPLAY
    unidata.bgsu.edu:1.0
    [ldm@unidata ~gempak]$ xterm
    xterm Xt error: Can't open display: unidata.bgsu.edu:1.0
    
    [ldm@unidata ~gempak]$ echo $DISPLAY
    :1.0
    [ldm@unidata ~gempak]$ xterm

Therefore, you will also fail in having dcredbook_gf try to connect,
which is the error message you received:
    >[2130] 041104/1344[GEMPLT -83]  NDISP - DISPLAY not set or invalid


I modified the dcredbook_gif script to set the display to :1.0
instead of unidata.bgsu.edu:1.0.

Also, the script is creating a gif of size 1280x1024. Your
running Xvfb was 1152x900, so I edited the /etc/init.d/xvfb to
create a 1280x1024 virtual display and restarted Xvfb.

Lastsly, the dcredbook_gif.csh is expecting 3 input parameters
which are used to name the output file. The pqact.conf action
you had was for the postscript print example I provided which did
not need an output file, but this script does, so I added the
3 parameters to the pqact.conf pattern/action.

After these changes, your gifs are updating.

Steve Chiswell
Unidata User Support




>
>---------- Forwarded message ----------
>Date: Thu, 04 Nov 2004 13:50:29 -0500
>From: Patrick L. Francis <address@hidden>
>To: Jeff Weber <address@hidden>
>Subject: sc
>
>
>so would you care to logon and
>evaluate dcredbook_gif.csh which
>was working until i switched the
>write directory to data/redbook/gifs/
>
>script location:
>/home/ldm/util
>
>gif location:
>/home/ldm/data/redbook/gifs
>
>redbook data location:
>/home/ldm/data/redbook/data
>
>so i could let scour leave the
>images indefinitely?
>
>Xvfb is running as:
>
>Xvfb :1 -screen 0 1280x1024x24 &
>
>but the log is showing it as not running:
>
>[2125] 041104/1344[DC 6]  Shutting down.
>[2130] 041104/1344[GEMPLT -83]  NDISP - DISPLAY not set or invalid
>[2130] 041104/1344[GEMPLT -8]  NDVICE - Device not set.
>[2130] 041104/1344[GG -7]  No map drawn.
>[2130] 041104/1344[DCREDBOOK -1] could not move /tmp/.rdbk8LH0tL to
>9AV-SURFACE_GEO_REL_VORT.gif
>
>also i would be so humbly grateful if you would
>take a look at
>/home/ldm/util/NEXRAD_gif.csh
>
>which just refuses to work (is currently unset in pqact).
>
>
>------------------------------------------
>Patrick L. Francis
>Department of Geography
>Bowling Green State University
>Office 301-F Hanna Hall
>Phone 419.372.4185
>Fax: 419.372.0588
>Web: http://weather.bgsu.edu/
>------------------------------------------
>
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