Re: 20020307: LDM from WSI system

On Sun, 17 Mar 2002, CHRISTOPHER HAMMOND wrote:

> Robb,
> thanks for your advice!!i've got the das2ldm software and am now trying to
> figure out the steps to send my product queue to the downstream ldm...i've
> read the online workshop,but it is all about receiving data via
> feedme...is there a tutorial anywhere for configging this upstream data
> source LDM?

Chris,

Here's a link to allow and request configurations for the upstream and
downstream machines:

http://www.unidata.ucar.edu/packages/ldm/smg/ldmconfig.fm.html#HDR2

The configurations are in the etc/ldmd.conf file. 

Here's an example configuration, of course the feeds/sites will have to be
changed for your configurations.

# Request for data
#
request NEXRAD ".*" imogene.unidata.ucar.edu
#####

# Begin Access control

##
# ALLOW: Who we are willing to feed
allow   ANY
    ^((localhost|loopback)|(127\.0\.0\.1\.?$))
allow   ANY     [a-z].*\.unidata\.ucar\.edu\.?$

#
allow WMO picante.comet.ucar.edu


Robb...



> thanks for your help!!
> c hammond
> address@hidden
> 
> On Fri, 8 Mar 2002, Robb Kambic wrote:
> 
> > On Fri, 8 Mar 2002, CHRISTOPHER HAMMOND wrote:
> >
> > > Robb,
> > > I am having server problems and am unsure if you get my last email,so I am
> > > resending.
> > >
> > > Thanks for the prompt reply!!
> > > Here are the specs on my particular site config:
> > >
> > > only two computers:
> > >
> > > 1) WSI hcsn (high capacity satellite network) consisting of a wsi HP box
> > > running Solaris v5.x, there are NO unidata products installed on this
> > > machine at this time...I would like to take the data coming into this box
> > > from the satellite on my roof and send it to my downstream RedHat 7.2 box
> > > at 192.168.1.1 which has an LDM on it and will have Gempak when I get the
> > > feed working correctly
> >
> > lappin,
> >
> > Could you look for two programs on the machine: das2ldm_nexrad and
> > das2ldm_nowrad? On our WSI box we have 2 lines in the LDM etc/ldmd.conf
> > file to get the products:
> >
> > exec    "/opt/das2ldm/bin/das2ldm_nexrad -l /dev/null -q
> > /opt/ldm/data/ldm.pq"
> > exec    "/opt/das2ldm/bin/das2ldm_nowrad -l /dev/null -q
> > /opt/ldm/data/ldm.pq"
> >
> > These program take the place of pqing program to get the products into the
> > LDM.  If you don't have these programs, how do you get the products?  Also
> > I would contact WSI about this issue. We have worked with WSI, so they
> > should have the configuration needed to get the products into the LDM.
> > They might have changed the configuration because our WSI box is about 5
> > years old. If the configuration is different, can  you let me know for any
> > future questions.
> >
> > Thanks,
> > Robb...
> >
> >
> >
> > >
> > > 2) RedHat 7.2 which has an ldm and will have a gempak installed on it 
> > > once the feed is
> > > coming in from the wsi box
> > >
> > > hopefully these details will help you out...if you need ANY other info,
> > > you know where to find me.
> > > Thanks very much for your kind help, it is GREATLY appreciated!!
> > > sincerely
> > > lappin
> > >
> > >
> > >
> > > On Thu, 7 Mar 2002, Robb Kambic wrote:
> > >
> > > > On Thu, 7 Mar 2002, Unidata Support wrote:
> > > >
> > > > >
> > > > >
> > > > > >Subject: Re: 20020305: FW: Unidata Community Portal Feedback
> > > > > >Organization: UCAR/Unidata
> > > > > >Keywords: 200203071345.g27DjCK09529
> > > > >
> > > > > I have now read all of the online data for the ldm and have a
> > > > > question concerning my site configuration:
> > > > >
> > > > > i am paying for a wsi feed (nexrad) which comes to me via a das (data
> > > > > acquisition system) which is a satellite uplink on my roof and a hp 
> > > > > box
> > > > > running solaris 5.? (im away from the computer and can't recall exact
> > > > > version number)  I would like to run an ldm on the solaris box and 
> > > > > send
> > > > > the data to a downstream redhat 7.2 box on my private network for 
> > > > > viewing
> > > > > with gempak.  The question is...how do I configure the ldm to grab the
> > > > > data from a local source like what will be happening in my case?  Are
> > > >
> > > >
> > > > Lappin,
> > > >
> > > > I depends if your WSI system was set up using the LDM software? If 
> > > > that's
> > > > the case, then all one would have to do is to configure the LDM to 
> > > > permit
> > > > the remote machines to obtain the data. The remote machine would have to
> > > > run an LDM and then request the data from the WSI machine. The usual LDM
> > > > configuration is to place the LDM s/w in /opt/ldm.
> > > >
> > > > To permit the remote machines to get the data an ALLOW line needs to be
> > > > entered in the etc/ldmd.conf file. Then a request line needs to be 
> > > > entered
> > > > into the remote machines etc/ldmd.conf file.  The details of these
> > > > commands are located at:
> > > >
> > > > http://www.unidata.ucar.edu/packages/ldm/workshop2001/Config_server.html#s1
> > > >
> > > >
> > > > Once we have determine your environment, I can give you the details
> > > > that need to be done to get your configuration setup.
> > > >
> > > > Robb....
> > > >
> > > >
> > > > > there any preexisting scripts to handle this?...i've searched the 
> > > > > support
> > > > > databases and didn't find anything helpful...any ideas?
> > > > > any help is GREATLY appreciated.
> > > > > Lappin Hammond
> > > > >
> > > > >
> > > >
> > > > ===============================================================================
> > > > Robb Kambic                                Unidata Program Center
> > > > Software Engineer III                      Univ. Corp for Atmospheric 
> > > > Research
> > > > address@hidden             WWW: http://www.unidata.ucar.edu/
> > > > ===============================================================================
> > > >
> > > >
> > >
> > >
> >
> > ===============================================================================
> > Robb Kambic                            Unidata Program Center
> > Software Engineer III                          Univ. Corp for Atmospheric 
> > Research
> > address@hidden                 WWW: http://www.unidata.ucar.edu/
> > ===============================================================================
> >
> >
> 
> 

===============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
address@hidden             WWW: http://www.unidata.ucar.edu/
===============================================================================