[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: 20001215: LDM FEEDME

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: Re: 20001215: LDM FEEDME
  • Date: Mon, 18 Dec 2000 10:00:40 -0700
Unidata Support wrote:
> 
> ------- Forwarded Message
> 
> >From: "Alan Hall" <address@hidden>
> >Subject: LDM FEEDME
> >Organization: NOAA
> >Keywords: 200012151828.eBFISOo12606 LDM
> 
> I'm trying to get an LDM to feed an upstream LDM.  The two connect just
> fine, the requesting LDM logs:
> 
> run requester: 20001215152246.204 TS_ENDT {{EXP, ".*"}}
> FEEDME (192.168.54.10): ok
> 
> and I see a connection on the remote LDM:
> 
> connection from humboldt_n
> Starting up: 20001215152246.204 TS_ENDT {{EXP, ".*"}}
> topo: humboldt_n EXP
> 
> I put things into the remote ldm.pq with the feed type of EXP and it
> shows up in the remote queue, but I never see it on the requesting LDM.
> I see corresponding 'connection reset' messages on the requesting
> machinge like it's trying to send, but the data never arrives.
> 
> I've gone back over the install guide, stopped, started, rebooted the
> whole machine, turned on verbose mode, and looked thru the Unidata email
> support archive, but nothing seems to tell why the data isn't arriving.
> 
> Any suggestions?
> 
> Alan.
> 
> ------- End of Forwarded Message

Hi Alan,

Since I don't know specifically what you've checked I'll
start with what might seem obvious.

Does the upstream machine have an 'allow' line in it's
ldmd.conf file to allow the downstream machine to receive
the EXP feed?  Does the downstream machine have a 'request'
line requesting the EXP feed from the upstream machine?   I
will take a look at these entries if you want to send them
to me.

Can you do 'ldmping -i3 -h <upstreamSite>' from the
downstream site and get a response?

Can you do 'notifyme -vl - -h <upstreamSite> -f EXP' from
the downstream site and see products arriving?

If these both work correctly, I suggest starting the ldm
server on the downstream site by hand (from the command
line) and seeing if there's any output.  This is, do
        rpc.ldmd -xl - 
from the downstream site.  This will log products and
invidual packets as they arrive from the upstream site - you
would be able to see if products are only partially
transmitted.

Similarly, you could start rpc.ldmd from the command line on
the upstream host and see what that one says.

Try these things and let me know what you find out.

Anne 
-- 
***************************************************
Anne Wilson                     UCAR Unidata Program            
address@hidden                 P.O. Box 3000
                                  Boulder, CO  80307
----------------------------------------------------
Unidata WWW server       http://www.unidata.ucar.edu/
****************************************************