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|> My current needs are to set up a load balancing solution for
|> my QA team
|> that is both effective and inexpensive. Could someone point
|> me towards
|> any kind of benchmarking data regarding the number of 'messages' or
|> packets were sent to x number of 'real servers' on a
|> particular hardware
|> configuration?
The largest LVS clusters in use today are with real.com and the JANET squid
cluster, at least that I'm aware of. These configurations are *LARGE*, and
certainly quite a bit larger than your configuration below.
Actual documentation, try http://www.linuxvirtualserver.org/Documents.html
|>
|> The machine I intend (only system currently available) to use is a P3
|> 450 w/256MB ram. I need to configure this machine to load
|> balance for
|> two sets of real servers. Is this plausible?
a p3-450 is capable of saturating a 100mb link with no problems, with any of
the architectures
|>
|> I have 5 apache servers with the above listed hardware
|> configuration. I
|> also have 2 Sun Enterprise 450 servers fro the 'application'
|> servers. I
|> will need to be able to adjust the number of apache servers
|> up or down
|> 'on the fly' for the QA team. Will the balancer have to
|> come down for
|> this change or does it have a means for altering the configuration in
|> real time?
changes are made on the fly, of course you don't have to take services down
:)
|>
|> Will the LVS system support the Sun application servers? I
Yes, but read about the arp problem. Your Sun servers need to listen for
the VIP on some interface but not arp back. Usually people use aliases
("virtual interfaces").
|> noticed in
|> the 'mini-how-to' that there is a script to be executed on
|> each of the
|> 'real servers'. Will this script function correctly in Solaris 8?
|>
see above. if NT/2000 can do it then Solaris can, too :). There's a way to
do it, it just might take a little bit of archive-searching to find out how
to not arp on solaris. if you have big problems let me know and I will ask
one of my solaris guru friends.
cheers
Peter
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