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[Discuss] Redundant array of inexpensive servers: clustering?

Tom Metro wrote:
> I think much of the reset ends up being carefully developed in-house
> configurations that haven't been shared back with the community.

That's because a HA configuration is unique to the services and 
applications it's wrapped around. I can share how I implemented a given 
HA cluster in general terms but the specifics won't do you any good. You 
can't pick up my config and drop it onto your cluster and expect it to 
work because it won't.

Except when it will. That's what AWS and similar services do. But they 
do it not with service groups and resources but with entire virtual 
machines. Very nifty, actually, and very enticing to an organization 
that wants lots of computing power for little money. Of course none of 
these are actually highly available services, a little fact that gets 
neglected when the bean counters look at costs. But, hey, you get what 
you pay for.

Rich P.

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