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Hi, re: > We recently restarted our LDM and afterward started getting the connection > errors below. Has something happened to your server or is there something > amiss in our configuration? Nothing has changed on our end. The typical thing that we have seen happen is reverse DNS for the machine REQUESTing one or more feeds from our top level IDD relay clusters is no longer available. When reverse DNS is lost/goes away, the name of the REQUESTing machine can no longer be determined, so the ALLOW rule in the upstream LDM configuration files will not match, and the connection attempt will be denied. Please check to make sure that reverse DNS is still available for your machine and let us know the results. re: > WARN Couldn't connect to LDM on idd.unidata.ucar.edu using either port 388 > or portmapper; : RPC: Remote system error - Connection refused > 20200709T231659.297591Z idd.unidata.ucar.edu[28321] error.c:err_log:236 > WARN Couldn't connect to LDM on idd.unidata.ucar.edu using > either port 388 or portmapper; : RPC: Remote system error - Connection > refused > 20200709T231659.297673Z idd.unidata.ucar.edu[28321] > LdmConfFile.c:requester_exec:925 NOTE Sleeping 60 seconds before > retrying... > 20200709T231659.297620Z idd.unidata.ucar.edu[28320] > LdmConfFile.c:requester_exec:925 NOTE Sleeping 60 seconds before > retrying... These indicate that the upstream machine that is trying to field the REQUEST is not able to match the machine's name to an existing ALLOW rule in its LDM configuration file. Cheers, Tom -- **************************************************************************** Unidata User Support UCAR Unidata Program (303) 497-8642 P.O. Box 3000 address@hidden Boulder, CO 80307 ---------------------------------------------------------------------------- Unidata HomePage http://www.unidata.ucar.edu **************************************************************************** Ticket Details =================== Ticket ID: AKV-360208 Department: Support IDD Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.