Date: Sun, 26 Dec 1999 10:51:43 CST From: "jacob martinson" <flightrecorder@hotmail.com> To: freebsd-questions@freebsd.org Subject: Session level load balancing - RFC 2391 Message-ID: <19991226165143.45354.qmail@hotmail.com>
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Hello all,
I am trying to find a software solution that will provide session-level load
balancing over a (sometimes) dynamic pool of similar servers, i.e. redirect
an incoming tcp session to one host out of the pool. The main goals are
redundancy and increased load capacity.
RFC 2391 "Load Sharing using IP Network Address Translation (LSNAT)" has a
good description of the idea.
I've got about 150G of information (and growing rapidly) to publish that
will live on a raid-5, which we are planning to share to the cluster over
NFS on a 100base lan.
------ 100baseT/NFS
| raid |---------------------------
------ | | |
| | |
-- -- --
|w1| |w2| |w3|
-- -- --
| | |
| | |
-------------------------------
|
|
--------
| load.b |
--------
|
|
Inet
We would initially be using it for balancing http sessions among web
servers, but may want to use it for other protocols as well.
I thought I read about fbsd being able to do this through natd, but when I
looked at the man page for it, I didn't see anything like that.
I read about Engelschall's mod_rproxy, but was hoping to find something that
operated at the session level, so it wouldn't be protocol specific.
Any insights/links/suggestions would be greatly appreciated!
Thanks!
Jacob
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