[LDM #IQV-659758]: sasquatch having connect / disconnect issues with idd.unidata.ucar.edu

Gerry & Donna,

Judging from the log messages, Sasquatch appears to have TWO request entries 
for NEXRAD2 data from idd.unidata.ucar.edu. The LDM on Sasquatch will only 
allow one of the associated downstream LDM processes to run at a time if the 
LDM is version 6.11.3 or later.

You should check the LDM configuration-file (etc/ldmd.conf) on Sasquatch for 
duplicate requests to idd.unidata.ucar.edu.

> Donna
> 
> I see that a notifyme pointed at idd.unidata.ucar.edu results in full data
> flow. The srh disconnect is because the EXP feed with A&M's ADRAD data
> isn't up or the SRH server is no longer configured for sasquatch (and
> probably not bigbird). I am confused by what appears to be the NEXRAD2
> disconnects from Unidata, though. Those requests should be identical to the
> ones going to IRADS. Thus, they should only be activated if there's a drop
> to OU, or if the path to Unidata is better, and then sasquatch should
> terminate rather than Unidata terminating.
> 
> Or, I'm very confused.
> 
> gerry
> 
> 
> On Tue, Nov 12, 2013 at 11:08 AM, donna Cote <address@hidden> wrote:
> 
> > To Gerry and Support,
> >
> > Can I get help figuring out what is going wrong and/or if this is a known
> > behavior of ver 6.10.1 (and therefore not something to fret about). Thanks,
> > Donna
> >
> >  [ldm@sasquatch ~]$ ldmadmin config
> >>
> >> hostname:              sasquatch.tamu.edu
> >> os:                    Linux
> >> release:               2.6.32-220.7.1.el6.x86_64
> >> ldmhome:               /home/ldm
> >> LDM version:           6.10.1
> >>
> >
> > I'm seeing these messages in the ldmd.log log:
> >
> >  [ldm@sasquatch ~]$ ldmadmin tail
> >>
> >     <snip>
> >
> >> Nov 12 10:55:04 sasquatch idd.unidata.ucar.edu[24492] NOTE: Upstream
> >> LDM-6 on idd.unidata.ucar.edu is willing to be a primary feeder
> >> Nov 12 10:55:09 sasquatch idd.unidata.ucar.edu[24493] NOTE: Upstream
> >> LDM-6 on idd.unidata.ucar.edu is willing to be an alternate feeder
> >> Nov 12 10:55:09 sasquatch idd.unidata.ucar.edu[24492] ERROR: readtcp():
> >> EOF on socket 4
> >> Nov 12 10:55:09 sasquatch idd.unidata.ucar.edu[24492] ERROR:
> >> one_svc_run(): RPC layer closed connection
> >> Nov 12 10:55:09 sasquatch idd.unidata.ucar.edu[24492] ERROR:
> >> Disconnecting due to LDM failure; Connection to upstream LDM closed
> >> Nov 12 10:55:09 sasquatch idd.unidata.ucar.edu[24492] NOTE: LDM-6
> >> desired product-class: 20131112165500.576 TS_ENDT {{NEXRAD2,  ".*"},{NONE,
> >>  "SIG=ed3d6f976c3e4a0f1a25c2a46a324a7e"}}
> >> ^C[ldm@sasquatch ~]$ date
> >> Tue Nov 12 10:55:27 CST 2013
> >> [ldm@sasquatch ~]$ grep "[24492]" logs/ldmd.log
> >>
> >    <snip>
> >
> >> Nov 12 10:58:54 sasquatch idd.unidata.ucar.edu[24492] NOTE: LDM-6
> >> desired product-class: 20131112165845.400 TS_ENDT {{NEXRAD2,  ".*"},{NONE,
> >>  "SIG=d0abf1594bf91481639cca2cc5a67b75"}}
> >> Nov 12 10:58:55 sasquatch eldm.fsl.noaa.gov[24506] NOTE: LDM-6 desired
> >> product-class: 20131112165846.065 TS_ENDT {{FSL,  ".*"}}
> >> Nov 12 10:58:58 sasquatch srh-ls-cpnrs1.srh.noaa.gov[24499] ERROR:
> >> Disconnecting due to LDM failure; nullproc_6 failure to
> >> srh-ls-cpnrs1.srh.noaa.gov; RPC: Unable to receive; errno = Connection
> >> reset by peer
> >> Nov 12 10:58:59 sasquatch idd.unidata.ucar.edu[24492] NOTE: Upstream
> >> LDM-6 on idd.unidata.ucar.edu is willing to be a primary feeder
> >> Nov 12 10:58:59 sasquatch idd.unidata.ucar.edu[24493] ERROR: readtcp():
> >> EOF on socket 4
> >> Nov 12 10:58:59 sasquatch idd.unidata.ucar.edu[24493] ERROR:
> >> one_svc_run(): RPC layer closed connection
> >> Nov 12 10:58:59 sasquatch idd.unidata.ucar.edu[24493] ERROR:
> >> Disconnecting due to LDM failure; Connection to upstream LDM closed
> >> Nov 12 10:58:59 sasquatch idd.unidata.ucar.edu[24493] NOTE: LDM-6
> >> desired product-class: 20131112165850.505 TS_ENDT {{NEXRAD2,  ".*"},{NONE,
> >>  "SIG=57caf094f9e235b2df8b218783be3d9d"}}
> >> Nov 12 10:59:04 sasquatch idd.unidata.ucar.edu[24493] NOTE: Upstream
> >> LDM-6 on idd.unidata.ucar.edu is willing to be an alternate feeder
> >> Nov 12 10:59:04 sasquatch idd.unidata.ucar.edu[24492] ERROR: readtcp():
> >> EOF on socket 4
> >> Nov 12 10:59:04 sasquatch idd.unidata.ucar.edu[24492] ERROR:
> >> one_svc_run(): RPC layer closed connection
> >> Nov 12 10:59:04 sasquatch idd.unidata.ucar.edu[24492] ERROR:
> >> Disconnecting due to LDM failure; Connection to upstream LDM closed
> >> Nov 12 10:59:04 sasquatch idd.unidata.ucar.edu[24492] NOTE: LDM-6
> >> desired product-class: 20131112165855.605 TS_ENDT {{NEXRAD2,  ".*"},{NONE,
> >>  "SIG=efa82b2e4c1323fccd1336e85db6e75c"}}
> >> [ldm@sasquatch ~]$
> >>
> >
> >
> > --
> > Donna Cote
> > Senior Research Associate
> > The Academy for Advanced Telecommunications and Learning Technologies
> > Texas A&M University
> > 3139 TAMU
> > College Station, Texas 77843-3139
> > Office: (979) 862-3982
> > Fax: (979) 862-3983
> > http://academy.tamu.edu/
> > cell: (979) 324-3549
> >
> 
> 
> 
> --
> Gerry Creager
> NSSL/CIMMS
> 405.325.6371
> ++++++++++++++++++++++
> “Big whorls have little whorls,
> That feed on their velocity;
> And little whorls have lesser whorls,
> And so on to viscosity.”
> Lewis Fry Richardson (1881-1953)


Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: IQV-659758
Department: Support LDM
Priority: Normal
Status: Closed