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Re: 20050921: sasquatch can't talk to bigbird?

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  • Subject: Re: 20050921: sasquatch can't talk to bigbird?
  • Date: Wed, 21 Sep 2005 14:23:41 -0600
Gerry,

> To: Unidata Support <address@hidden>
> >From: Gerry Creager N5JXS <address@hidden>
> Subject: sasquatch can't talk to bigbird?
> Organization: Texas A&M University -- AATLT
> Keywords: 200509211347.j8LDltYJ018102 LDM IDD

The above message contained the following:

> I'm having a problem and seeing the following from an ldmadmin tail:
> _____________________________________
> Sep 21 13:42:45 sasquatch bigbird[32449]: Desired product class: 
> 20050921124245.039 TS_ENDT {{EXP|NEXRAD2|NNEXRAD|FSL3|FSL2|WMO,  "[DSW]"}}
> Sep 21 13:42:45 sasquatch bigbird[32449]: ERROR: requester6.c:457; 
> ldm_clnt.c:277: Couldn't connect to LDM 6 on bigbird.tamu.edu using 
> either port 388 or portmapper; ldm_clnt.c:116: : RPC: Remote system 
> error - No route to host
> Sep 21 13:42:49 sasquatch mesodata3[22609]: Empty intersection of HIYA 
> offer from mesodata3.tamu.edu (TS_ZERO TS_ENDT {{EXP,  ".*"}}) and 
> ACCEPT entries
> _____________________________________
> And, ldmping yields nothing, while a notifyme looks like this:
> _____________________________________
> [ldm@sasquatch ~]$ ldmping bigbird.tamu.edu
> Sep 21 13:43:55      State    Elapsed Port   Remote_Host           rpc_stat
> 
> [ldm@sasquatch ~]$ notifyme -xvl - -h bigbird
> Sep 21 13:44:14 notifyme[22649]: Starting Up: bigbird: 
> 20050921134414.130 TS_ENDT {{ANY,  ".*"}}
> Sep 21 13:44:14 notifyme[22649]: Connected to upstream LDM-5
> Sep 21 13:45:04 notifyme[22649]: Connected to upstream LDM-5

Odd that an ldmping(1) would fail but a notifyme(1) wouldn't.

I just did an ldmping(1) on Sasquatch to Bigbird and it worked:

    [ldm@sasquatch src]$ ldmping -vl- -h bigbird
    Sep 21 20:10:52      State    Elapsed Port   Remote_Host rpc_stat
    Sep 21 20:10:52 RESPONDING   0.005921  388   bigbird      
    ...

I suspect that either Bigbird's LDM was offline, or there was a glitch
in your network for that time interval.

> PS:  I'm also seeing the occasional reference to mesodata3 and HIYAs in 
> bigbird's logfile.

Apparently, an rtstats(1) process on Mesodata3 is trying to send
statistics to Sasquatch but there's no matching ACCEPT entry in the LDM
configuration-file, etc/ldmd.conf.  Should it be trying to send the
statistics?

I'm installing a new version of the LDM on Sasquatch -- one that will,
hopefully, help us understand the HIYA/SIGSEGV problem.

Regards,
Steve Emmerson