Re: [ldm-users] LDM cluster on virtualized servers

• To: ldm-users@xxxxxxxxxxxxxxxx
• Subject: Re: [ldm-users] LDM cluster on virtualized servers
• From: Matthew Foster - NOAA Federal <matthew.foster@xxxxxxxx>
• Date: Tue, 5 Apr 2016 14:29:42 -0500

The issue we're fighting on our single system is a very large number of
connections.  We normally have well over 1000 ldmd child processes
running.  It takes ~1 hour to restart our LDM, due to the number of
connections it must re-establish.  We're hoping that spreading this out
over a cluster will allow us to enable changes with no loss of data flow,
while also spreading that load out.

Matt


On Tue, Apr 5, 2016 at 1:43 PM, Chuck Pavloski <cfp102@xxxxxxxxx> wrote:

> Art Person has this running at Penn State.
>
> - Chuck
>
> On Apr 5, 2016, at 2:26 PM, Matthew Foster - NOAA Federal <
> matthew.foster@xxxxxxxx> wrote:
>
> We're looking into standing up an LDM cluster on virtualized servers, and
> are wondering if anyone else has done this.  We are wanting to learn of any
> experiences or pitfalls that might help us along this path.  We would
> likely set up something very similar to the cluster described on this page
> <http://www.unidata.ucar.edu/newsletter/2005june/clusterpiece.htm>, but
> in VMs, rather than bare-metal servers.
>
> Thanks for any suggestions or advice.
>
> Matt
>
>
> --
> Matt Foster
> Techniques Development Meteorologist
> NWS Central Region Headquarters, Scientific Services Division / STI
> Kansas City, MO
> Office: 816-268-3113
>
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>
>
> --------
>
> Chuck Pavloski, Ph.D.
> Director of Meteorological Computing and Senior Research Associate
>
> Department of Meteorology
> The Pennsylvania State University
> 503 Walker Building
> University Park, PA 16802
> USA
>
>
>
>
>


-- 
Matt Foster
Techniques Development Meteorologist
NWS Central Region Headquarters, Scientific Services Division / STI
Kansas City, MO
Office: 816-268-3113

• References:
  • [ldm-users] LDM cluster on virtualized servers
    • From: Matthew Foster - NOAA Federal
  • Re: [ldm-users] LDM cluster on virtualized servers
    • From: Chuck Pavloski