Mladen Turk wrote:
Jess Holle wrote:
I'm quite willing to help, but you're clearly much more familiar with
both mod_jk and APR/MPM than I am, so I suspect I'd just get in the
way except at the testing level.
Well, I plan to create mpm watchdog hook system first.
I'll also create a small callback in mod_proxy, just
to maintain the connection pool so you are free to implement
any additional mod_proxy interval operations (like heath checking)
from there.
Is there already something along these lines in mod_jk (or more
specifically the IIS connector)?
I did a little simplistic testing and haven't gotten down and dirty to
debug this, but I have no managed to figure out any configuration of
mod_jk where the load balancers' "dead" workers will be tested in the
background and avoid testing this with foreground requests. I have a
simple "ping" request that takes many seconds all too often, presumably
delayed by re-checking all the dead workers.
I have a worker.maintain of 15 and a recover_time for my balanced worker
of 30 -- under the theory that background maintenance should be able to
test any "dead" connections and mark them as recently tested without any
request threads ever checking the workers. This assumes that the
recover_time is only observed by request threads, though.
Is there a means of achieving background-only (or nearly so) testing of
dead workers with mod_jk? That's what I'm looking for in both jk and
mod_proxy_ajp connectors. I guess I was hoping/assuming it was there in
mod_jk from reading the docs.
--
Jess Holle
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