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Good morning,
I encountered a "nice" feature of cache clusters at a major German ISP,
notably "T-Online". Their cache clusters appear to not do persistence, which
means that a user may get directed to multiple proxies during a single session
...
The effect: During a single session, the user may appear to be comeing from
multiple source IPs, effectively running "persistence port" useless *sigh*
The "solution": Either we manage to sell T-Online a Linux VirtualServer which
would support proper persistence (though highly desireable, this is rather
unlikely;) or I hack the LVS code to accept a netmask for the persistent port.
The code would iph->saddr & netmask whenever referring to the templates, thus
you could specify that you want to group all clients from the same /28 /24 or
whatever to the same real server.
I know this is walking a fine line between accomodating broken cache clusters
and bundling all clients on the same real server.
Comments or someone willing to do the patch? ;-)
Sincerely,
Lars Marowsky-Brée
--
Lars Marowsky-Brée
Network Management
teuto.net Netzdienste GmbH
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