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[LDM #HHK-349534]: LDM data feed down



Hi Wanhong,

re:
> [ldm@weather3 ~]$ notifyme -vl- -f ANY -h uni20.unidata.ucar.edu
> Jul 24 21:31:41 notifyme[25421] NOTE: Starting Up: uni20.unidata.ucar.edu: 
> 20170724213141.505 TS_ENDT {{ANY,  ".*"}}
> Jul 24 21:31:41 notifyme[25421] NOTE: LDM-5 desired product-class: 
> 20170724213141.505 TS_ENDT {{ANY,  ".*"}}
> Jul 24 21:31:41 notifyme[25421] INFO: Resolving uni20.unidata.ucar.edu to 
> 128.117.140.130 took 0.057063 seconds
> Jul 24 21:31:41 notifyme[25421] ERROR: NOTIFYME(uni20.unidata.ucar.edu): 7: 
> Access denied by remote server
> Jul 24 21:32:06 notifyme[25421] NOTE: LDM-5 desired product-class: 
> 20170724213141.505 TS_ENDT {{ANY,  ".*"}}
> Jul 24 21:32:06 notifyme[25421] INFO: Resolving uni20.unidata.ucar.edu to 
> 128.117.140.130 took 0.001066 seconds
> Jul 24 21:32:06 notifyme[25421] ERROR: NOTIFYME(uni20.unidata.ucar.edu): 7: 
> Access denied by remote server
> Jul 24 21:32:31 notifyme[25421] NOTE: LDM-5 desired product-class: 
> 20170724213141.505 TS_ENDT {{ANY,  ".*"}}
> Jul 24 21:32:31 notifyme[25421] INFO: Resolving uni20.unidata.ucar.edu to 
> 128.117.140.130 took 0.00113 seconds
> Jul 24 21:32:31 notifyme[25421] ERROR: NOTIFYME(uni20.unidata.ucar.edu): 7: 
> Access denied by remote server
> Jul 24 21:32:56 notifyme[25421] NOTE: LDM-5 desired product-class: 
> 20170724213141.505 TS_ENDT {{ANY,  ".*"}}
> Jul 24 21:32:56 notifyme[25421] INFO: Resolving uni20.unidata.ucar.edu to 
> 128.117.140.130 took 0.001167 seconds
> Jul 24 21:32:57 notifyme[25421] ERROR: NOTIFYME(uni20.unidata.ucar.edu): 7: 
> Access denied by remote server
> Jul 24 21:33:22 notifyme[25421] NOTE: LDM-5 desired product-class: 
> 20170724213141.505 TS_ENDT {{ANY,  ".*"}}
> Jul 24 21:33:22 notifyme[25421] INFO: Resolving uni20.unidata.ucar.edu to 
> 128.117.140.130 took 0.001173 seconds
> Jul 24 21:33:22 notifyme[25421] ERROR: NOTIFYME(uni20.unidata.ucar.edu): 7: 
> Access denied by remote server
> Jul 24 21:33:47 notifyme[25421] NOTE: LDM-5 desired product-class: 
> 20170724213141.505 TS_ENDT {{ANY,  ".*"}}
> Jul 24 21:33:47 notifyme[25421] INFO: Resolving uni20.unidata.ucar.edu to 
> 128.117.140.130 took 0.00127 seconds
> Jul 24 21:33:47 notifyme[25421] ERROR: NOTIFYME(uni20.unidata.ucar.edu): 7: 
> Access denied by remote server

What we see in the LDM log file on uni20.unidata.ucar.edu is:

20170724T213257.071038Z ldmd[28865] NOTE ldmd.c:637:handle_connection() Denying 
connection from "128.163.8.100" because not allowed
20170724T213322.217405Z ldmd[28980] NOTE ldmd.c:637:handle_connection() Denying 
connection from "128.163.8.100" because not allowed
20170724T213347.363622Z ldmd[28989] NOTE ldmd.c:637:handle_connection() Denying 
connection from "128.163.8.100" because not allowed
20170724T213412.497975Z ldmd[29105] NOTE ldmd.c:637:handle_connection() Denying 
connection from "128.163.8.100" because not allowed
20170724T213437.643609Z ldmd[29112] NOTE ldmd.c:637:handle_connection() Denying 
connection from "128.163.8.100" because not allowed
20170724T213502.778621Z ldmd[29244] NOTE ldmd.c:637:handle_connection() Denying 
connection from "128.163.8.100" because not allowed
20170724T213527.914784Z ldmd[29256] NOTE ldmd.c:637:handle_connection() Denying 
connection from "128.163.8.100" because not allowed
20170724T213553.062904Z ldmd[29267] NOTE ldmd.c:637:handle_connection() Denying 
connection from "128.163.8.100" because not allowed
20170724T213618.197187Z ldmd[29797] NOTE ldmd.c:637:handle_connection() Denying 
connection from "128.163.8.100" because not allowed
20170724T213643.344161Z ldmd[30445] NOTE ldmd.c:637:handle_connection() Denying 
connection from "128.163.8.100" because not allowed
20170724T213708.492694Z ldmd[30654] NOTE ldmd.c:637:handle_connection() Denying 
connection from "128.163.8.100" because not allowed
 ...

This tells us that something at UKy is changing the IP address of the machine 
on which you
are running the 'notifyme' invocation to 128.163.8.100.

You can stop running the 'notifyme' test to uni20.unidata.ucar.edu now.

re:
> I will contact our network supporters to talk the problem of server 
> 128.163.8.100.

Very good.  Ask if someone is trying to proxy the LDM feed REQUESTs through
128.163.8.100.

Additional comment:

- if both weather.uky.edu and weather3.ca.uky.edu are being proxyed to look
  like the same machine, there could be data loss caused by different
  REQUESTs for the same IDD feed(s) from the two machines even if the
  REQUESTs worked, which they don't since 128.163.8.100 does not resolve
  to a '.edu' name

Cheers,

Tom
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Ticket Details
===================
Ticket ID: HHK-349534
Department: Support IDD
Priority: Normal
Status: Closed
===================
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