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On Sat, 17 Mar 2007, Rodre Ghorashi-Zadeh wrote:
Hello,
So if the realserver is dead, it can't ask the 2nd request?
I think the fear is more along the lines of what if the service is dead, and
perhaps being able to perform rolling maintenance. Also the app that I am
trying to get load balanced, Oracle OCS, actually mentions the f5 load
balancers SNAT mode, so I believe it is a pretty deep rooted requirement.
yes a few people are starting to ask about the F5 SNAT mode.
We don't have it unfortunately.
LVS could be pure netfilter, but it would be really slow.
Enough said. I knew there had to be a reason, now I understand why. Out of
curiosity do you think that this still holds true with todays hardware, gig
nics, dual/quad core CPUs, etc?
I expect so. I can't measure the increase in latency caused
by LVS over just straight routing. I haven't done any
measurements with netfilter, but everyone seems to know when
it's on. The clock rate for everything increases at about
the same speed - the same technology is being used for all
new hardware - so while the absolute speed is increasing,
the ratio of speeds remains the same. The step that was the
bottleneck 10yrs ago is still the bottleneck today.
In regards to my problem I still can't get the reply packets, once SNAT-ed,
sent to the realserver, and sent back to the director to be accepted by the
director and sent back to the client. I am thinking it might have some thing
to do with some of the the /proc/sys/net/ipv4 params, anyone have any ideas?
no sorry. I assume you've read the sections in the HOWTO on
clients on realservers?
Joe
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