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One of the features that I saw a lot when looking at commercial load
balancers was the ability to use persistence based on cookies, session
IDs, and ssl IDs instead of just IP addresses. The reason why is best
explained right here. If a lot of people work in an office that has only
one public IP address, then you get lots of load imbalance. Is it
possible for LVS to do persistence based on apache/php sessions? Or
based on SSL sessions, or anything like that? Of course, I don't know
how these types of persistence would help when balancing an e-mail
server.
- Doug
-----Original Message-----
From: lvs-users-admin@xxxxxxxxxxxxxxxxxxxxxx
[mailto:lvs-users-admin@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of Wensong
Zhang
Sent: Monday, August 12, 2002 10:02 AM
To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: Balancing weirdness
I guess that this persistence might lead to some load imbalance. With
the persistence feature, all the connections from the same IP address
will be scheduled to the same server, before the persistent template
expires. So, maybe there are many users behind one IP address (a NAT
router) accessing your last server.
BTW, for the imap/pop service, maybe you don't need to use the
persistent
feature.
Regards,
Wensong
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