load balancing problem

Horms horms at verge.net.au
Mon Sep 13 08:52:43 BST 2004

On Mon, Sep 13, 2004 at 08:42:32AM +0100, Malcolm Turnbull wrote:
> Mind you I don't know what effect the DH scheduler has... maybee spoke 
> to soon...
> Gee thats a really old version of LVS that Piranaha uses.

Persistance opperates independant of the scheduler.
It does not matter if you use the RR, WLC, DH or any
other type of scheduler, it always works the same way.
That is, it looks up a persistance template and if it
finds one, then it uses it, else it asks the scheduler what to do.

In other words, if there was a connection from a given end-user,
and the persistance timeout has not expired, subsequent connections
from the same end-user (masked with the persistance netmask) will
go to the same real server. As this lookup occurs _before_ a
call to the scheduler, it is not affected by quirks in any scheduler.


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