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Re: 20020307: LDM from WSI system

On Tue, 19 Mar 2002, CHRISTOPHER HAMMOND wrote:

> Robb, thanks.
> i've successfully sent the file, but only after invoking rpl.ldmd my
> self...are there problems with this method?

lappin,

One should use the start script ldmadmin (start|stop)

% ldmadmin start

I would read the man page on ldmadmin


I'm confused about you WSI configuration?  Are you getting the data via
WSI satellite system or are you receiving the WSI data over the internet?

I'm asking because you first messages implied that you were getting the
data via satellite?

Are you configurating one machine to feed others internally?


> now, i've sent the queue succesfully but am unsure of the process after
> that...i thought that the pqact.conf file would file the incoming products
> into the correct data files
> 
pqact does store the products on your local machine as well as decode
products, etc.  It is important to make the entries correctly or they will
not work.  The syntax is a little strange. ie

# Format is
# feedtype tab pattern tab action [tab action_args]
# where tab is \t or \n\t.  

One can use the command pqactcheck to make sure the syntax is correct.

% ldmadmin pqactcheck


>      (i'm getting nowrad MASTER and USRAD, therefore two data directories
> involved)
> 
Yes you should see directories under ~ldm/data

What messages are in the log files?

Robb...



> i'm a bit confused
> 
> any ideas?...i have attached my config files
> 
> On Tue, 19 Mar 2002, Robb Kambic wrote:
> 
> > 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/
> > ===============================================================================
> >
> >
> 

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