On Tue, 21 Feb 2006, Clint Byrum wrote:
Hello LVS users and developers. I have a situation where I'm setting up
LVS for a short term need, so let me explain.
You're a long time user of LVS. I thought you'd know
all this stuff :-)
Most of us aren't real current with hardware etc. We
mainly help people get setup and after that, we listen to
We're talking with F5 about doing a BigIP implementation,
but we are on a time crunch, and know that LVS will
probably get us where we want to be in the short term. So,
without further ado, the questions:
- We can make all of the HTTP decisions we want at the
server level using mod_proxy. However, ktcpvs can also
help with these, right?
I'm not real familiar with ktcpvs. If this is the L7 code,
it's not used a whole lot, the reason being that it's L7 and
computationally expensive and people have found ways of
handling their problems with mod_proxy etc at the L4 level.
Since it's not used a whole lot, not a lot of development
work goes into it, so it doesn't get used a lot (repeat).
There are examples of how people have used mod_proxy etc in
the HOWTO. The big ($) guys all use L7, but then you pay a
lot for the software, the hardware that is needed and the
nice user interface. A lot of people don't mind spending the
money. Presumably LVS would be a lot better off competing
head to head with the big $ if the L7 code was a bigger part
of LVS, but then most of us don't have the hardware to
- Ok this is highly subjective, I know.. but how does LVS
fare against the BigIP-1500. Anybody replaced one with the
No personal experience, but listening to posters it seems to
Professional load balancers:
chosen by people in suits with lots of money and who don't
want to deal with technical problems. The user interface,
the large amount of hardware, and the large cost impresses
visitors (who are suits themselves) brought in by the suits,
who all go "oooooh - you guys really know what you're
doing". Although people on this list have replaced the big
iron with LVS and been much happier with the result, I went
to a talk by a load balancer company recently to find that
they have an end-to-end solution that you manage through a
GUI and you don't have to know anything about tcpip etc.
LVS doesn't have any of that.
Chosen when technical people make the decisions in places
with little money and relatively large amounts of time to
set it up and look after it.
What's spamaps all about?
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
generator at http://www.wm7d.net/azproj.shtml
Homepage http://www.austintek.com/ It's GNU/Linux!