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kwijibo@xxxxxxxxxx wanted us to know:
>>I want to build e-mail cluster using lvs, anybody have experience with this
>>and talk about this?
>It is pretty much the same as setting up an LVS for any other
>service. The biggest problem you will probably have is figuring
>out how handle storage for the mailboxes.
Agreed. We use a NetApp for our central NFS server, 2 http machines for
webmail, 2 imap machines, and 2 smtp machines. We have a 2 node load
balancer with failover that balances the 3 protocols listed above (as
well as other webservers). The 6 machines serving mail are dual P4 2.8
GHz with 1Gig RAM boxen, the load balancers are old P3 700 boxes that
only do load balancing. We're just a small system though compared to
many who do it. We estimate we could scale up to about 10-20 real
servers for each service before we start to get throughput problems with
the NetApp.
>My experience is that it works great. I am not sure how I would
>handle our mail load without it.
Same here.
--
Regards... Todd
We should not be building surveillance technology into standards.
Law enforcement was not supposed to be easy. Where it is easy,
it's called a police state. -- Jeff Schiller on NANOG
Linux kernel 2.6.11-6mdksmp 3 users, load average: 0.01, 0.05, 0.01
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