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20020722: Not getting Data [urgent] (cont.)

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  • Subject: 20020722: Not getting Data [urgent] (cont.)
  • Date: Mon, 22 Jul 2002 14:41:02 -0600
>From: William C Klein <address@hidden>
>Organization: Valparaiso
>Keywords: 200207191908.g6JJ8H908347 data feeds

Bill,

>Here is the ldmd.conf:
>
># Start necessary LDM processes
>exec    "/home/ldm/decoders/xcd_run MONITOR"
>exec    "pqact"
>exec    "pqact -f NNEXRAD /home/ldm/etc/pqact.nexrad"
>exec    "pqbinstats"
>
># Request UNIDATA -> DDPLUS, IDS, HRS, MCIDAS
>#
># 20020208 - Split feed request to squall (TCY - Unidata)
>#
>#request DDPLUS|IDS|DIFAX|FSL2  ".*"  squall.atmos.uiuc.edu
>#request MCIDAS|HRS  ".*"  128.174.80.44
>request DDPLUS|IDS|DIFAX|FSL2  ".*"  papagayo.unl.edu
>request MCIDAS|HRS  ".*"  129.93.52.150
>
># Request ALL NEXRAD products from ALL NEXRAD sites
>request NNEXRAD  "/p...(GRB|MKX|LOT|ILX|GRR|IWX|IND|LVX|DTX|ILN|PAH|HPX)"
>flood
>.atmos.uiuc.edu
>
># Request all NEXRAD products from the NEXRAD floater sites
># request FNEXRAD  ".*"  flood.atmos.uiuc.edu
>
># Request Lightning data from SUNY
>request NLDN ".*" striker.atmos.albany.edu
>
># Allow LDM access to the local host and any machine at Unidata (for
># troubleshooting purposes)
>allow ANY
>^((localhost|loopback)|(127\.0\.0\.1\.?$)|([a-z].*\.unidata\.ucar\.edu
>\.?$))


OK, so it looks like your ldmd.conf file was also setup to possibly
get data from squall.atmos.uiuc.edu.  You can check to see that squall
will allow you to request data using the notifyme execution as in other
cases:

notifyme -vxl- -o 3600 -f ANY -h squall.atmos.uiuc.edu

If this shows data like the notifyme to ldm.meteo.psu.edu did, you can
feed from squall.

>*-*-*-*-*
>
>I'm not seeing a request like:
>
>request UNIDATA  ".*"  bar.bar.edu

UNIDATA represents a collection of feeds:

UNIDATA == WMO|MCIDAS
WMO     == DDPLUS|IDS|HRS

therefore:

UNIDATA == DDPLUS|IDS|HRS|MCIDAS

DIFAX is its own, separate feed.

>Is that due to the split that was made earlier this year (see comments
>above)?

Yes.  The split made before combined the feed of DDPLUS, IDS, DIFAX, and
FSL2 into one and MCIDAS and HRS into another.

>And if so, then can I just comment out the papagayo line and add
>the psu for those items listed?

Yes.  If you are allowed to feed from squall.atmos.uiuc.edu, you could
also just comment out the papagayo lines and uncomment the squall lines:

#request DDPLUS|IDS|DIFAX|FSL2  ".*"  papagayo.unl.edu
#request MCIDAS|HRS  ".*"  129.93.52.150
request DDPLUS|IDS|DIFAX|FSL2  ".*"  squall.atmos.uiuc.edu
request MCIDAS|HRS  ".*"  128.174.80.44

This would be the absolute quickest way of getting back up.

If you decide to take the route of leaving commented lines for feeds
from different machines in your ldmd.conf file, then I would recommend
adding commented lines for ldm.meteo.psu.edu:

#request DDPLUS|IDS|DIFAX|FSL2  ".*"  papagayo.unl.edu
#request MCIDAS|HRS  ".*"  129.93.52.150
#request DDPLUS|IDS|DIFAX|FSL2  ".*"  ldm.meteo.psu.edu
#request MCIDAS|HRS  ".*"  128.118.28.12
request DDPLUS|IDS|DIFAX|FSL2  ".*"  squall.atmos.uiuc.edu
request MCIDAS|HRS  ".*"  128.174.80.44

Once the changes are made (with no typos), you should be able to
simply stop and restart the LDM:

ldmadmin stop
<wait until all LDM processes exit>
ldmadmin start

If the 'ldmadmin start' hangs (i.e., you don't get the Unix prompt back),
it means that you have a typo in ldmd.conf.

Tom