Rudi Ahlers schrieb: > On Wed, Dec 3, 2008 at 4:29 PM, Tom Brown <tom at ng23.net> wrote: > >>> Thank you for the input. Let's forget about XEN for a moment, I was >>> actually looking at setting up a cluster which has fail-over & load >>> balancing capabilities, regardless of what runs on it. If XEN >>> enterprise is the only option,then I'm not going to bother. I don't >>> see why I need to pay for a tool which has a helpdesk and >>> "professional technicians standing by" to help me when I get stuck, if >>> XEN can do the same. >>> >>> >> i cant speak for others but when i talk of clusters and load balancing i >> talk of different things. For load balancing i'd lean towards LVS and >> for clusters then it very much depends on what you are clustering. >> Application servers, databases, mail servers etc etc. For a MySQL >> 'cluster' i'd probably go for master<>master depending on how many nodes >> i need and the application type etc. If its application clusters then >> things like tomcat can know about each other and take over if one of >> them dies. I think that the point i'm trying to make is that the >> solution very much depends on what you are trying to achieve, so to me >> 'regardless what runs on it' is not really something to aim a good >> answer at. >> >> As mentioned i am pretty sure that if you want to make your own 'cloud' >> in todays speak then you may well be looking commercial. >> >> Thats just my thoughts and its most probable i am wrong. >> _______________________________________________ >> > > > > Hi Tom, > > I do use MySQL clusters, but this is an application level cluster, and > is limited. I would like to go further and do an OS level cluster. > With DRBD, one could mirror 2 servers identical, i.e. everything on 1 > server to the other, which is even better than MySQL clustering. But, > DRBD only offers high-availability, i.e. if one server goes down, the > other can take over. > > What I'm looking for, is how to build what is called a super computer. > Google used to, or still even does this, where they put hundreds of > computers into the same "cluster" / super computer, and end up with a > 1 huge hard drive, and plenty of RAM to use :) So, my question is, how > does one do this? I know that I can pay someone a LOT of money for it, > but I don't have a lot of money for this. If it's not possible, I'll > probably just go and purchase VMWare's grid application and use that, > but I would prefer to try this myself if possible. > > There's nothing free and COTS, AFAIK. Only building-blocks: hadoop and it's related tools. You must do work on your own and parallelize the way your problem is solved. Rainer