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> Someone must put back the real server when it is alive. This
> sounds like a user space job.
Absolutely.
> The traffic will not start until we send requests. We have to send L4
> probes to the real server (from the user space) or to probe it with
> requests (LVS from kernel space)?
How about selecting a new server for the connection, and signalling (not
necessarily via signals, mind you...) to a user-space program that the
target should immediately be checked for availability? Then the userspace
program can set up checks to be run, and re-add it later when it becomes
available again -- assuming it really is unavailable.
If the server _is_ available, and acting normally, it should respond in
the first place, though, right? :)
This method might be more efficient than the existing scheduled poll
method, but I'm sure it also has hidden traps.
Thanks,
Kyle Sparger - Senior System Administrator
Dialtone Internet - Extremely Fast Web Systems
(954) 581-0097 x 122 - Voice (954) 581-7629 - Fax
ksparger@xxxxxxxxxxxxxxxxxxxx
http://www.dialtoneinternet.net
"Forget college, I'm going pro."
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