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>From: "Herm Wojdylak" <address@hidden> >Organization: WNI >Keywords: 200302272059.h1RKx3G09148 LDM Linux cluster Herm, >Institution: Weathernews Americas >Package Version: 5.1.x / 5.2.x >Operating System: Linux >Hardware Information: PC (intel) > >Inquiry: > >I've tried to search the FAQ's about this with no luck. Do you know if >anyone has successfully tried running LDM on clustered machines? Yes, the folks at OU/CAPS have setup a system on a Linux cluster. >We >receive NWSTG data via a Noaaport system which feeds an LDM main system >and a backup LDM system. The main system then feeds LDM running on >various downstream systems which do the actual data processing. If the >main LDM system dies, we manually failover the downtream systems to >receive data from the backup system. If possible, we would like to >cluster the main and backup systems so that if a downstream system lost >connection with the main LDM system, when it tried to reestablish the >data feed and the main system was down, the cluster load handler would >connect it to the backup machine without manual intervention. Since I don't know the pertinent details of how the folks at CAPS setup the LDM on their cluster, I will refer you to the technical contact there: Carl Sinclair <address@hidden> (who I also CCed on this reply. Tom Yoksas >From address@hidden Thu Feb 27 15:18:36 2003 >To: Herm Wojdylak <address@hidden> >CC: Unidata Support <address@hidden>, address@hidden >Subject: Re: 20030227: LDM - Linux - Running LDM on clustered systems Herm, We are running LDM on a clustered system. The way we are doing it is this: Each node runs it's own instance of LDM with the queue on that node's local hard drive. The data that is brought in is written to a raid shared by the cluster. That's the basic rundown. If you'd like a further breakdown I can provide that as well. Carl