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Greg Gilbert is correct. LDM is trying to get the fastest site. Once upon a time, we could identify primary and secondary upstream sites but those days are now gone. There might be a way to define your requests that's better than 'REQUEST ANY ".*" ', but in general terms, in order to have the redundancy, I don't think it would reduce your network traffic. That said, if your NOAAPort ingest server is on the local network and you're collecting data from an off-site downstream, your overall bandwidth offsite shouldn't be a killer, necessarily. It's more a nuisance that it's going back and forth between servers. Gerry On Sat, Jan 13, 2018 at 12:00 AM, Gilbert Sebenste <gilbert@xxxxxxxxxxxxxxxx > wrote: > Hi Greg, > > It will also try to pick the fastest site. If both are pretty much equal, > if I recall correctly, it will flip back-and-forth between those two > machines. Hopefully somebody can correct me here if I’m wrong. > > Gilbert > > On Jan 12, 2018, at 10:43 PM, Karen Cooper - NOAA Affiliate < > karen.cooper@xxxxxxxx> wrote: > > Hi Greg, > > I have a feeling it's trying to get data from both sources and trying to > balance between them. > > It would be nice if you could select a preferred source and a secondary > source that you only go to if your preferred source goes down for a > specified amount of time. > > On Fri, Jan 12, 2018 at 1:43 PM, Greg Trotter <gtrotter@xxxxxxxxxx> wrote: > >> I have an LDM server that is connected to two upstreams – one is my >> NOAAPORT ingester on my local network, and one is a backup site at a remote >> location. I have both listed in my ldmd.conf, with the local server listed >> first, and the request patterns are identical. >> >> >> >> Looking at the queue, it looks like all is well – the origin on all the >> products is from our local NOAAPORT ingest server. If I look at the network >> traffic on that server, however, I see a lot of data coming in from the >> remote server – almost as much as we are bringing in from the local server. >> I theorize that the downstream doesn’t see it locally, and requests it from >> the remote upstream, but by the time it arrives, it’s come in from the >> local upstream? I can’t find any other reason that we’d be having that much >> traffic from an upstream LDM that never appears as an origin for the >> products in our queue. >> >> >> >> Is there something I am doing wrong? Clearly, I’d prefer not to use that >> much bandwidth if we don’t have to. Is there a way to have it only hit the >> remote upstream if the local is unavailable? >> >> >> >> Here’s the relevant part of my ldmd.conf: >> >> >> >> >> >> REQUEST ANY ".*" <IP of local noaaport ingester> >> >> REQUEST ANY ".*" <IP of remote noaaport ingester> >> >> >> >> *Greg Trotter* >> >> System Administrator >> >> Weather Decision Technologies, Inc >> >> 201 David L Boren Blvd Suite 270 >> >> Norman, Oklahoma 73072 >> >> >> >> _______________________________________________ >> NOTE: All exchanges posted to Unidata maintained email lists are >> recorded in the Unidata inquiry tracking system and made publicly >> available through the web. Users who post to any of the lists we >> maintain are reminded to remove any personal information that they >> do not want to be made public. >> >> >> ldm-users mailing list >> ldm-users@xxxxxxxxxxxxxxxx >> For list information or to unsubscribe, visit: >> http://www.unidata.ucar.edu/mailing_lists/ >> > > > > -- > “The presence of those seeking the truth is infinitely to be preferred to > the presence of those who think they’ve found it." > -- Terry Prachett > > ------------------------------------------- > Karen.Cooper@xxxxxxxx > > Phone#: 405-325-6456 <(405)%20325-6456> > Cell: 405-834-8559 <(405)%20834-8559> > National Severe Storms Laboratory > > _______________________________________________ > NOTE: All exchanges posted to Unidata maintained email lists are > recorded in the Unidata inquiry tracking system and made publicly > available through the web. Users who post to any of the lists we > maintain are reminded to remove any personal information that they > do not want to be made public. > > > ldm-users mailing list > ldm-users@xxxxxxxxxxxxxxxx > For list information or to unsubscribe, visit: > http://www.unidata.ucar.edu/mailing_lists/ > > > _______________________________________________ > NOTE: All exchanges posted to Unidata maintained email lists are > recorded in the Unidata inquiry tracking system and made publicly > available through the web. Users who post to any of the lists we > maintain are reminded to remove any personal information that they > do not want to be made public. > > > ldm-users mailing list > ldm-users@xxxxxxxxxxxxxxxx > For list information or to unsubscribe, visit: > http://www.unidata.ucar.edu/mailing_lists/ > -- 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)
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