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[LDM #RKK-379892]: LDM logging and operation issues

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  • Subject: [LDM #RKK-379892]: LDM logging and operation issues
  • Date: Wed, 18 Jul 2007 17:19:59 -0600
Evan,

Please don't send us email formatted in HTML.

> I got the LDM working here at CSU and have become the primary feeder
> for other people requesting LDM data in the lab.�  I came across this
> problem I wanted to get your advice on.<br>
> 
> ldmadmin
> watch lists files all the time...
> 
> pqact.conf
> says:
> NEXRAD2
> ^L2-BZIP2/(....)/([0-9][0-9][0-9][0-9][0-1][0-9][0-3][0-9])([0-2][0-9][0-5][0-9])([0-9][0-9])&#65533;
>  &#65533;
> FILE&#65533; &#65533; &#65533;  /var/data/ldm/images/nexrad2/\1/\1_\2_\3

Use the "pqact.conf" pattern in a "notifyme" invocation.  Does it
work (i.e., show NEXRAD2 data-products)?

> [ldm@iblmw1
> etc]$ ll /var/data/ldm/images/nexrad2<br>
> total 0<br>
> [ldm@iblmw1 etc]$
> I said
> "chmod a+w
> /var/data/ldm/*" - that didn't help at all

You should use the "-R" option of "chmod" to allow all subdirectories
to be writable.

> and bin/logs ldmd.log says:
> Jul 17
> 13:22:37 iblmw1 rpc.ldmd[10875]
> NOTE: Starting Up (version: 6.6.5; built: Jul 17 2007 12:<br>
> 11:48)<br>
> Jul 17 13:22:37 iblmw1 rpc.ldmd[10875] NOTE: Using local address
> 0.0.0.0:388<br>
> Jul 17 13:22:37 iblmw1 pqact[10876] NOTE: Starting Up<br>
> Jul 17 13:22:37 iblmw1 pqact[10876] NOTE: Starting from insertion-time
> 2007-07-17 13:22:34.04964<br>
> 1 UTC<br>
> Jul 17 13:22:37 iblmw1 rtstats[10877] NOTE: Starting Up (10875)<br>
> Jul 17 13:22:37 iblmw1 192.168.38.86[10878] NOTE: Starting Up(6.6.5):
> 192.168.38.86:388 20070717<br>
> 122237.059 TS_ENDT {{NEXRAD2,&#65533;  ".*"}}<br>
> Jul 17 13:22:37 iblmw1 192.168.38.86[10878] NOTE: LDM-6 desired
> product-class:
> 20070717122237.06<br>
> 0 TS_ENDT {{NEXRAD2,&#65533;  ".*"},{NONE,&#65533;
> "SIG=dfe0840ae1644e1f7444604e9ac6fd5d"}}<br>
> Jul 17 13:22:37 iblmw1 192.168.38.86[10878] NOTE: Upstream LDM-6 on
> 192.168.38.86 is willing to<br>
> be a primary feeder<br>
> Jul 17 13:24:02 iblmw1 rtstats[10877] WARN: Couldn't connect to LDM on
> rtstats.unidata.ucar.edu<br>
> using either port 388 or portmapper; : RPC: Remote system error -
> Connection
> refused<br>
> Jul 17 13:25:19 iblmw1 last message repeated 129 times<br>
> Jul 17 13:26:44 iblmw1 last message repeated 130 times<br>
> Jul 17 13:28:12 iblmw1 last message repeated 130 times<br>
> ldmd.log (END)<br>
> </span></font></p>
> <p class="MsoNormal">Can you decipher the problem here Steve?&#65533;  It 
> seems
> the data is coming into the LDM but is not being saved.&#65533;  Is the line 
> in
> the pqact.conf file suspect?&#65533;  What is the purpose/effect of the 
> rtstats
> warning?<br>

Don't worry about the "rtstats" messages.

> </p>
> <p class="MsoNormal">The second issue I have is one of LDM NEXRAD2 feed
> type bandwidth.&#65533;  It seems the NEXRAD2 feed is really bogging down the
> network in our lab.&#65533;  Is there anyway possible to only transmit data
> from 1 or 2 NEXRAD sites?&#65533;

You can request data from only one or two sites.

> Can something be configured on the upstream
> server to only pass data from certain radar to downstream LDMs?&#65533;  This
> would really help us out a lot.<br>

Upstream filtering is possible (see 
<http://www.unidata.ucar.edu/software/ldm/ldm-current/basics/ldmd.conf.html#ALLOW>).
I recommend, however, only requesting the sites in which you're interested.

Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: RKK-379892
Department: Support LDM
Priority: Normal
Status: Closed