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Re: 20020307: LDM from WSI system

On Tue, 19 Mar 2002, CHRISTOPHER HAMMOND wrote:

> Robb,
> ...more developments, yesterday I was able to send my
> product queue to my downstream box using das_pqsend...no problem,
> however, today things don't seem to working correctly
> 
> it says the program isn't registered...i attached net.log which documents
> my attempt, also i've attached my config files.

lappin,

I didn't get any of your config files, just giving general answers.

pqsend sends products from a LDM queue to a downstream machine. If pqsend
responds that the program isn't registered, then it's probably not
running. Another command to run is ldmping, ie

% ldmping -i 5 -h <remoteMachine>

This tells the LDM status of the remote machine. Another command pqcat
lets one look at the products in the local queue.  If an LDM is
running locally them the ldmadmin command also lets one look at the
products. There are man pages for all the commands located at:

http://www.unidata.ucar.edu/packages/ldm/ldm5/manindex.html


> I'm not completely sure how to config pqact for use with my graphical
> programs in gempak...you'll see how i put .gif extensions on the
> products...is this even remotely close?...I can' see how the
> regular expressions create the file name, but does the name need to end in
> gif to be usable for the gempak drivers?...whick driver do I need, is a
> driver a decoder?...I haven't seen any decoders for WSI and assume that
> pqact does all of the necesary decoding for the gempak.
> 
Look at these links and others in  gempak
http://www.unidata.ucar.edu/packages/gempak/examples/nowrad/nowrad.html
http://www.unidata.ucar.edu/packages/gempak/examples/nids/nids.html

This link has pqact examples for the WSI feedtype:

http://www.unidata.ucar.edu/packages/gempak/tutorial/pqact/images.tbl

There's also a search page for previous answered questions at:

www.unidata.ucar.edu/search.html

Look at the gempak links

I can answer the LDM questions but I don't feel 100% qualified to answer
the gempak questions. If you send those type questions to support then
they will be routed to the gempak support person.

Thanks,
Robb...

> thanks
> lappin
> 
> hopefully today will be the last time you hear from me
> 
> :)
> 
> 
> On Mon, 18 Mar 2002, Robb Kambic wrote:
> 
> > 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/
> > ===============================================================================
> >
> >
> 
> 

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