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Re: Ask Slashdot: How Well Does Windows Cluster? Turned around



Hi,

linux-ha.org does very good stuff for high availability, though currently
only monitors the status of nodes rather than the resources on the nodes.

Red Hat is apparently working on their own version of it.

IPVS is load balancing stuff. Basically it allows you to turn a machine
into a load balancer via a range of options. There's a good HOWTO on this
at http://www.linuxvirtualserver.org/Joseph.Mack/HOWTO/LVS-HOWTO.html
whilst the main site is:
www.linuxvirtualserver.org
The type of load balancing you implement depends massively on the hardware
and the network that you have. All the details are in the HOWTOs.

If you want to do resource monitoring then you need to use something like
mons and write your own scripts.

Useful resources:
http://www.linuxvirtualserver.org/Documents.html
http://www.linux-ha.org/#Links

Be wary about the HA howto which is from '97: much has changed since then.
If in doubt, join either the HA mailing list or the LVSP mailing lists
(or both). Neither are high volume.

Have fun!

Matthew

On Thu, Feb 21, 2002 at 02:21:50PM -0600, Michael Jinks wrote:
> well there's this...
> 
> http://linux-ha.org/
> 
> ...though to be honest i haven't tried to do HA in quite a while, so
> have no idea how up to date or workable any of it is.
> 
> TurboLinux used to (does?) market a distro with some proprietary kernel
> and userland enhancements for doing load balancing and failover.  Two
> jobs ago I got as far as having it set up and not-quite-working, then I
> switched jobs.  At that time (mid to late 2000) the GPL'ed HA stuff had
> some fairly serious limitations not present in the TL package which is
> why we coughed up the money, but with luck GPL-land has caught up some
> since then.
> 
> -mrj
> 
> 
> 
> On Thu, Feb 21, 2002 at 08:09:23PM +0000, Andrew Pritchard wrote:
> > For those of you who read Slashdot (http://slashdot.org), there was a recent 
> > question about Linux/MS clustering. The query was about a computational 
> > clustering and everyone was suggesting that Beowolf was good for that. The 
> > consensus seemed to be that MS Clustering was good for High Availability, not 
> > good for Computational Clustering (this was disputed, but I'm not going to go 
> > there :)
> > 
> > However, no one turned the question round, and asked or suggested what you can 
> > do for High Availability/Load Balancing Linux. Is there a package (or set of 
> > packages) in debian for this? What are people's experiances with this kind of 
> > setup. Obviously Linux is good for High Availability, but the Load Balancing is 
> > another matter.
> > 
> > Cheers,
> > 
> > Andrew
> > 
> > "I do not agree with what you say,
> > but I will defend to the death your right to say it." 
> > Francois Marie Arouet Voltaire (1694-1778)
> > 
> > 
> > -- 
> > To UNSUBSCRIBE, email to debian-user-request@lists.debian.org 
> > with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
> > 
> 
> -- 
> ## Michael Jinks, IB ## JFI/MRSEC Computing ## University of Chicago ##
>       Reader!  Think not that
>       technical information
>       ought not be called speech;  -- Anonymous, "How to decrypt a DVD"
> 
> 
> -- 
> To UNSUBSCRIBE, email to debian-user-request@lists.debian.org 
> with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
> 
> 
> 

-- 

Matthew Sackman
Nottingham
England

BOFH Excuse Board:
Computers under water due to SYN flooding.

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