Yeah, that’s what I think is happening.
Steve pointed me in a direction of some code to modify, I will see if that can
do what I need. I agree, what you describe would be a very useful feature.
From: Karen Cooper - NOAA Affiliate [mailto:karen.cooper@xxxxxxxx]
Sent: Friday, January 12, 2018 10:43 PM
To: Greg Trotter <gtrotter@xxxxxxxxxx>
Cc: ldm-users@xxxxxxxxxxxxxxxx
Subject: Re: [ldm-users] question about primary and secondary data transfer
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<mailto: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
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